Title of Invention	SYSTEM AND METHOD FOR MECHANICAL MOUNTING OF A DEVICE ONTO A SHAFT
Abstract	The invention relates to a system for securing a device to a shaft comprising a device (204); at least two mounts (306) of hardened material (206) secured to the device (204); a shaft (202) comprised within a motor and having an axial groove including a radial groove, wherein the at least two mounts (306) are insertable within the axial and radial groove to secure and prevent movement of the device (204), wherein each mount (306) comprises a first wedge (308) of hardened material (206), a second wedge (308) of hardened material (206); and a median (310) positioned therebetween the first and second wedges (308), and wherein the first wedge, second wedge (308) and median (310) comprise a single component of hardened material (206), the hardened material (206) being galvanized steel.

Title of Invention

SYSTEM AND METHOD FOR MECHANICAL MOUNTING OF A DEVICE ONTO A SHAFT

Abstract

The invention relates to a system for securing a device to a shaft comprising a device (204); at least two mounts (306) of hardened material (206) secured to the device (204); a shaft (202) comprised within a motor and having an axial groove including a radial groove, wherein the at least two mounts (306) are insertable within the axial and radial groove to secure and prevent movement of the device (204), wherein each mount (306) comprises a first wedge (308) of hardened material (206), a second wedge (308) of hardened material (206); and a median (310) positioned therebetween the first and second wedges (308), and wherein the first wedge, second wedge (308) and median (310) comprise a single component of hardened material (206), the hardened material (206) being galvanized steel.

Full Text	Cross-Reference to Related Applications This application claims priority to, and incorporates by reference herein in its entirely, pending United States Provisional Patent Application Serial No. 60/490,863 (Attorney Docket No. 2003P09184US), filed 28 July 2003. Background A device, such as a fan, that is secured onto a shaft of a machine, such as a motor, must be secured in a manner that prevents axial or radial movement of the device. As shown in Fig. 1, certain conventional systems and methods for securing devices, such as a fan, onto a motor shaft, require setscrews and keyways. A keyway is machined directly onto the fan and is also machined onto the shaft. The fan is drilled and tapped to receive a setscrew. The fan is mounted onto the shaft and secured radially by a common key. The key is secured by a setscrew that traverses the keyway provided by the fan. This setscrew axially retains the fan. It can be appreciated that disadvantages caused by this conventional system and method for mounting a device to a motor shaft are that keyways and setscrews increase stress concentration, thereby effectively increasing the stress that the fan's structure is subjected to during operation. Excessive stress tends to result in decreased reliability, thereby increasing overall operating costs of the motor. It can be appreciated that conventional systems have attempted, but have failed to remedy the problem that a device such as a fan, which is secured to a motor, receives excessive and destructive stress during its operation. For example, certain conventional systems and methods apply less interference in the fit-up between a fan and a shaft; however this requires tighter machining tolerances. Other conventional systems include stronger material for mechanically mounting a fan. However, it will be appreciated that these conventional methods and systems are particularly costly and inefficient. DE 7242559 teaches us a shaft (6), a device (2a) and a mount (7) secured to the device, the shaft including an axial groove (10) and a radial groove (8), the mount being inserted into the grooves to prevent the movement of the device. The mount made of a single component includes two wedges and a medium positioned between the wedges. The wedges form a contact edge having a concave shape corresponding to the concave shape of the radial groove and there by making a fix secure fir between the mount and radial groove to prevent the shaft axial and radial movement. Corresponding method is also described. This document shows a connection element made of a wire formed into a snap ring or circlip 7a and a key part 7b parallel to the axis, which rests in a shaft keyway 10. A spacing apparatus for use in mounting an engine cooling fan of a racing vehicle to a drive structure, typically the water pump drive shaft, is made from a spacer body to which a fan hub quick-releasably attaches. The spacer body has a base with a shaft extending therefrom having a reduced perimeter section over which the fan hub mounts. When the fan hub is in place, engagement rods may be inserted in the fan hub to retain the fan hub on the shaft. The engagement rods may be easily and quickly removed without risk of burn to the mechanic to allow quick release of the fan hub on which the fan blades are mounted. Therefore, there is a need for an efficient, effective system and method for mechanically mounting a device, such as a fan, to a motor without subjecting the device to increase/stress during its operation. Summary The present invention axially and radially secures a device, such as a fart, to a shaft of a motor without a need for setscrews or keyways. Elimination of a keyway and setscrew for securing a fan to a motor shaft minimizes stress that the fan is subjected to during its operation. It will be appreciated that this system and method allows for more efficient use of materials used to fabricate and machine the fan. It will further be appreciated that the present invention allows for machining the mechanical mount of a fan to a motor shaft with looser tolerances and use of less costly material. One of ordinary skill in the art will recognize that the present invention lowers fan stress, reduces fabrication cost of the fan with the use of less costly material, allows for greater interference (looser machining tolerances), decreases maintenance costs and provides for increased fan life. Brief Description of the Drawings A wide variety of potential embodiments will be more readily understood through the following detailed description of certain exemplary embodiments, with reference to the accompanying drawings in which: Fig. 1A is a cross sectional view of a conventional keyway/setscrew mounting method. Fig. 1B is a close up view of a conventional keyway/setscrew mounting method. Fig. 2A is a cross sectional view of an exemplary embodiment of a mechanical mounting of a fan of the present invention. Fig. 2B is a close up view of an exemplary embodiment of a mechanical mounting of a fan of the present invention. Fig. 3 is a detailed view of an exemplary embodiment of a fan with a mechanical mount of the present invention. Figs. 4-5 are detailed external views of an exemplary embodiment of a fan with a mechanical mount of the present invention. Fig. 6 is a detailed internal view of an exemplary embodiment of a fan with a mechanical mount of the present invention. Fig. 7 is a detailed view of an exemplary embodiment of a mechanical mount of the present invention. Fig. 8 is a detailed view of an exemplary embodiment of grooves provided to receive a mechanical mount of the present invention. Definitions When the following terms are used herein, the accompanying definitions apply: attaching - the process of fastening, securing, and/or joining. keyway - a slot for receiving a key. key - a device that radially constrains two objects such as a fan and a shaft. machining - the process of cutting, shaping, and/or finishing by machine. motor - a device that converts electrical energy into mechanical energy to turn a shaft. mount - that upon which a thing is attached. mounting - the process of placing in a raised position and/or attaching. removably - to be able to move from a place or position occupied. setscrew - a screw for insertion into a keyway for a conventional system and method for mounting a key onto a shaft. DETAIL Fig. 2A is a cross sectional view 200 of a mechanical mounting of a fan 204 onto a shaft 202 of the present invention. It will be appreciated that the components shown in Fig. 2A are provided within a motor. FIG. 2B is a close- up view of fan 204. As shown, neither a keyway nor setscrew is used to mount the fan as provided in conventional mounting method of Fig. 1 Instead, in an exemplary embodiment, a mechanical mount 206 is provided at opposing 180 degree positions along the inner disk portion of fan 204. It will be appreciated that mount 206 is capable of securing the fan to the shaft to constrain radial and axial movement. In an exemplary embodiment, mount 206 is mounted on fan 204 at a location where the stresses are low, and the impact of a stress concentration at these areas does not raise overall stress levels in the fan. One of ordinary skill in the art will recognize that in alternative embodiments of the present invention, stress on a fan may differ, so that a different position may be selected for attaching mount 206 to fan 204. Fig. 3 is a detailed frontal view 300 of an exemplary embodiment of fan 304 that includes a pair of mounts 306. In a present embodiment, a mount 306 is attached to an inner disc portion 305 of fan 302. As provided, the stresses on fan 302 result in securement of each mount 306 in a 180 degrees opposing potion From the other. As shown, mounts 306 are positioned across the y-y vertical line of fan 304. As shown, in an exemplary embodiment of the invention, mount 306 includes two fabricated steel wedges 308. Each wedge 308 includes an aperture 307 for insertion of a bolt to secure mount 306 to fan 304. It will be appreciated that a securement element, such as a washer is positioned and tightened on the bolt to secure mount 306 to fan 304. A median 310 is positioned between wedges 306 to provide additional support to mount 306. It will be appreciated that in an exemplary embodiment, the elements of mount 306 are composed of steel. However, it will be appreciated that alternative embodiments of the present invention may include a mount 306 composed of other hardened material such as titanium. Fig. 4 is an external view 400 of an exemplary embodiment of a mount 406 for securing fan 404 to shaft 402. As shown, mount 406 includes two wedges 408 that are separated by a median 410. A bolt is insertable through an aperture of fan 404 and a corresponding aperture of each wedge 408. It will be appreciated that a securement element, such as a bolt is threaded to tightly secure fan 404 to mount 406. An aperture ring 412 extends from each wedge 408 to protect each bolt and securement element. A wedge groove 405 and a median groove 403 are machined into shaft 402. It will be appreciated that the proportions of wedge groove 405 and median groove 403 are precisely machined to provide for snug-fit securement of mount 406, to ensure that fan 404 remains attached during operation of a motor. Wedge groove 405 is machined so that it may firmly secure in place each wedge 408. Median groove 403 is machined so that it may firmly secure in place median 410. Fig. 5 is an external view 500 of an exemplary embodiment of a mount 506 for securing fan 504 to shaft 502. As shown, mount 506 includes two wedges 508 that are separated by a median 510. A bolt is insertable through an aperture of fan 504 and a corresponding aperture of each wedge 508. It will be appreciated that a securement element, such as a nut is threaded to tightly secure fan 504 to mount 506. An aperture ring 512 extends from each wedge 508 to protect each bolt and securement element. A wedge groove 505 and a median groove 503 are machined into shaft 502. It will be appreciated that the proportions of wedge groove 505 and median groove 503 are precisely machined tp provide for snug-fit securement of mount 506, to ensure that fan 504 remains attached during operation of a motor. Wedge groove 505 is machined so that it may firmly secure in place each wedge 508. Median groove 503 is machined so that it may firmly secure in place median 510. Fig. 6 is a detailed internal view 600 of an exemplary embodiment of a fan 604 with a mount 606 of the present invention. As shown, mount 606 includes two wedges 608 that are separated by a median 610. A bolt 616 is insertable through an aperture of fan 604 and a corresponding aperture of each wedge 608. It will be appreciated that a securement element, such as a bolt 614 is threaded to tightly secureifan 504 to mount 506. An aperture ring 612 extends from each wedge 608 to protect each bolt and securement element. A wedge groove 605 and a median groove 603 are machined into shaft 602. It will be appreciated that the proportions of wedge groove 605 and median groove 603 are precisely machined to provide for snug-fit securement of mount 606, to ensure that fan 604 remains attached during operation of a motor. Wedge groove 605 is machined so that it may firmly secure in place each wedge 608. Median groove 603 is machined so that it may firmly secure in place median 610. It will be appreciated that the narrow edge 618 and wide edge 620 are machined to a concave curve that corresponds to the concave curvature of the inner bottom side of groove 605 of shaft 602. The curvature of narrow edge 618 matches the curvature of the inner bottom side of groove 605 to ensure a snug fit relationship between mount 606 and groove 605 of shaft 602. Fig. 7 is a detailed close up view 700 of an exemplary embodiment of a mount 706 of the present invention. As shown, mount 706 in an exemplary embodiment of the invention includes two fabricated steel wedges 708. Each wedge 708 includes an aperture 707 for insertion of a bolt to secure mount 706 to a device such as a fan. A median 710 is positioned between wedges 708 to provide additional support to mount 706. It will be appreciated that in an exemplary embodiment, the elements of mount 706 are composed of steel. However, it will be appreciated that alternative embodiments of the present invention may include a mount 706 composed of other hardened material such as titanium. It will be appreciated that narrow edge 718 and wide edge 720 are machined to a concave curve that corresponds to the concave curvature of the inner bottom side of groove 605 of shaft 602. The curvature of narrow edge 718 matches the curvature of the inner bottom side of groove 605 to ensure a snug fit relationship between mount 706 and groove 605 of shaft 602. Fig. 8 is a detailed view 800 of an exemplary embodiment of a groove provided to receive a mount of the present invention. As shown, a wedge groove 805 and a median groove 803 are machined into shaft 802. It will be appreciated that the proportions of wedge groove 805 and median groove 803 are precisely machined to provide for snug-fit securement of mount 806, to ensure that a secured device, such as a fan, remains attached during operation of a motor. Wedge groove 805 is machined so that it may firmly secure in place each wedge of the mount. Median groove 803 is machined so that it may firmly secure in place median 810. Still other embodiments will become readily apparent to those skilled in this art from reading the above-recited detailed description and drawings of certain exemplary embodiments. It should be understood that numerous variations, modifications, and additional embodiments are possible, and accordingly, all such variations, modifications, and embodiments are to be regarded as being within the spirit and scope of this application. For example, regardless of the content of any portion (e.g., title, field, background, summary, abstract, drawing figure, etc.) of this application, unless clearly specified to the contrary, there is no requirement for the inclusion in any claim of any application claiming priority hereto of any particular described or illustrated activity or element, any particular sequence of such activities, or any particular interrelationship of such elements. Moreover, any activity can be repeated, any activity can be performed by multiple entities, and/or any element can be duplicated. Further, any activity or element can be excluded, the sequence of activities can vary, and/or the interrelationship of elements can vary. Accordingly, the descriptions and drawings are to be regarded as illustrative in nature, and not as restrictive. Moreover, when any number or range is described herein, unless clearly stated otherwise, that number or range is approximate. When any range is described herein, unless clearly stated otherwise, that range includes all values therein and all subranges therein. Any information in any material (e.g., a United States patent, United States patent application, book, article, etc.) that has been incorporated by reference herein, is only incorporated by reference to the extent that no conflict exists between such information and the other statements and drawings set forth herein. In the event of such conflict, including a conflict that would render any claim seeking priority hereto invalid, then any such conflicting information in such incorporated by reference material is specifically not incorporated by reference herein. WE CLAIM 1. A system for securing a device to a shaft comprising: a device; at least two mounts of hardened material secured to the device; a shaft comprised within a motor and having an axial groove including a radial groove, wherein the at least two mounts are insertable within the axial and radial groove to secure and prevent movement of the device, wherein each mount comprises a first wedge of hardened material, a second wedge of hardened material; and a median positioned therebetween the first: and second wedges, and wherein the first wedge, second wedge and median comprise a single component of hardened material, the hardened material being galvanized steel. 2. The system as claimed in claim 1, wherein the device is a fan. 3. The system as claimed in claim 1, comprising: a plurality of apertures provided in the device, wherein each device aperture corresponds to an aperture provided within one of the first wedge and the second wedge of the mount; a bolt threaded through each of the corresponding apertures of the device and the aperture of each wedge of the mount; and a securing element for tightening the bolt to secure the device to the mount. 4. The system as claimed in claim 3, wherein the securement element is a nut. 5. The system as claimed in claim 1, comprising: an external surface of the shaft having a concave shape of a specified degree of curvature; and a contact edge of the mount having a concave shape corresponding to the concave shape of a specified degree of curvature of the radial groove of the shaft, wherein the corresponding concave shape of a specified degree of curvature enables a secure fit between the mount and the radial groove of the shaft to prevent radial and axial movement. 6. A method for securing a device to a shaft comprising: providing a device; positioning at least two mounts of hardened material comprising galvanized steel to the device; securing the mount to the device; and inserting the mounts within an axial groove and a radial groove of a shaft comprised in a motor, wherein the mounts secure the device to prevent axial and radial movement of the device. 7. The method as claimed in claim 6, wherein each of the mounts comprises: a first wedge of hardened material; a second wedge of hardened material; and a median positioned therebetween the first and second wedges, wherein the first wedge, second wedge and median comprise a single component of hardened material. 8. The method as claimed in claim 6, wherein the device is a fan. 9. The method as claimed in claim 6, comprising: positioning plurality of aperture provided in the device to each of a corresponding aperture provided within one of the first wedge and the second wedge of the mount; threading a bolt through each of the corresponding apertures of the device and the aperture of each wedge of the mount; and axially turning a securing element around the bolt to secure the device to the mount. 10.The method as claimed in claim 6, wherein the securement element is a nut. 11.The method as claimed in claim 6, comprising: providing an external surface of the shaft having a concave shape of a specified degree of curvature; providing a contact edge of the mount having a concave shape corresponding to the concave shape of a specified degree of curvature of the radial groove of the shaft; and inserting the corresponding concave shape of a specified degree of curvature between the mount and the radial groove of the shaft to secure the mount to the shaft to prevent radial and axial movement of the device. 12.The method as claimed in claim 6, comprising: securing at least two of the mounts to the device. 13.A system for securing a device to a shaft comprising: a device; at least two mounts of hardened material comprising galvanized steel and having an insertion edge with a concave shape secured to the device; and a shaft comprised in a motor and having an axial groove having a concave shape and a radial groove, wherein the mount along the insertion edge is insertable within the axial and radial groove, the concave shape of the insertion edge of the mounts and the concave shape of the axial groove promoting a secure fit between the shaft and the mount to prevent axial and radial movement of the device. 14.The system as claimed in claim 13, wherein each of the mounts comprises: a first wedge of hardened material; a second wedge of hardened material; and a median positioned therebetween the first and second wedges, wherein the first wedge, second wedge and median comprise a single component of hardened material. The invention relates to a system for securing a device to a shaft comprising a device (204); at least two mounts (306) of hardened material (206) secured to the device (204); a shaft (202) comprised within a motor and having an axial groove including a radial groove, wherein the at least two mounts (306) are insertable within the axial and radial groove to secure and prevent movement of the device (204), wherein each mount (306) comprises a first wedge (308) of hardened material (206), a second wedge (308) of hardened material (206); and a median (310) positioned therebetween the first and second wedges (308), and wherein the first wedge, second wedge (308) and median (310) comprise a single component of hardened material (206), the hardened material (206) being galvanized steel.

Full Text

Cross-Reference to Related Applications
This application claims priority to, and incorporates by reference herein in its
entirely, pending United States Provisional Patent Application Serial No.
60/490,863 (Attorney Docket No. 2003P09184US), filed 28 July 2003.
Background
A device, such as a fan, that is secured onto a shaft of a machine, such as a
motor, must be secured in a manner that prevents axial or radial movement of
the device. As shown in Fig. 1, certain conventional systems and methods for
securing devices, such as a fan, onto a motor shaft, require setscrews and
keyways. A keyway is machined directly onto the fan and is also machined onto
the shaft. The fan is drilled and tapped to receive a setscrew. The fan is
mounted onto the shaft and secured radially by a common key. The key is
secured by a setscrew that traverses the keyway provided by the fan. This
setscrew axially retains the fan. It can be appreciated that disadvantages caused
by this conventional system and method for mounting a device to a motor shaft
are that keyways and setscrews increase stress concentration, thereby effectively
increasing the stress that the fan's structure is subjected to during operation.
Excessive stress tends to result in decreased reliability, thereby increasing overall
operating costs of the motor.
It can be appreciated that conventional systems have attempted, but have failed
to remedy the problem that a device such as a fan, which is secured to a motor,

receives excessive and destructive stress during its operation. For example,
certain conventional systems and methods apply less interference in the fit-up
between a fan and a shaft; however this requires tighter machining tolerances.
Other conventional systems include stronger material for mechanically mounting
a fan. However, it will be appreciated that these conventional methods and
systems are particularly costly and inefficient.
DE 7242559 teaches us a shaft (6), a device (2a) and a mount (7) secured to the
device, the shaft including an axial groove (10) and a radial groove (8), the
mount being inserted into the grooves to prevent the movement of the device.
The mount made of a single component includes two wedges and a medium
positioned between the wedges. The wedges form a contact edge having a
concave shape corresponding to the concave shape of the radial groove and
there by making a fix secure fir between the mount and radial groove to prevent
the shaft axial and radial movement. Corresponding method is also described.
This document shows a connection element made of a wire formed into a snap
ring or circlip 7a and a key part 7b parallel to the axis, which rests in a shaft
keyway 10.
A spacing apparatus for use in mounting an engine cooling fan of a racing
vehicle to a drive structure, typically the water pump drive shaft, is made from a
spacer body to which a fan hub quick-releasably attaches. The spacer body has a
base with a shaft extending therefrom having a reduced perimeter section over

which the fan hub mounts. When the fan hub is in place, engagement rods may
be inserted in the fan hub to retain the fan hub on the shaft. The engagement
rods may be easily and quickly removed without risk of burn to the mechanic to
allow quick release of the fan hub on which the fan blades are mounted.

Therefore, there is a need for an efficient, effective system and method for
mechanically mounting a device, such as a fan, to a motor without subjecting
the device to increase/stress during its operation.
Summary
The present invention axially and radially secures a device, such as a fart, to a
shaft of a motor without a need for setscrews or keyways. Elimination of a
keyway and setscrew for securing a fan to a motor shaft minimizes stress that
the fan is subjected to during its operation.
It will be appreciated that this system and method allows for more efficient use
of materials used to fabricate and machine the fan. It will further be
appreciated that the present invention allows for machining the mechanical
mount of a fan to a motor shaft with looser tolerances and use of less costly
material. One of ordinary skill in the art will recognize that the present
invention lowers fan stress, reduces fabrication cost of the fan with the use of
less costly material, allows for greater interference (looser machining
tolerances), decreases maintenance costs and provides for increased fan life.
Brief Description of the Drawings
A wide variety of potential embodiments will be more readily understood
through the following detailed description of certain exemplary embodiments,
with reference to the accompanying drawings in which:
Fig. 1A is a cross sectional view of a conventional keyway/setscrew mounting
method.
Fig. 1B is a close up view of a conventional keyway/setscrew mounting
method.
Fig. 2A is a cross sectional view of an exemplary embodiment of a
mechanical mounting of a fan of the present invention.
Fig. 2B is a close up view of an exemplary embodiment of a mechanical

mounting of a fan of the present invention.
Fig. 3 is a detailed view of an exemplary embodiment of a fan with a
mechanical mount of the present invention.
Figs. 4-5 are detailed external views of an exemplary embodiment of a fan
with a mechanical mount of the present invention.
Fig. 6 is a detailed internal view of an exemplary embodiment of a fan with a
mechanical mount of the present invention.
Fig. 7 is a detailed view of an exemplary embodiment of a mechanical mount
of the present invention.
Fig. 8 is a detailed view of an exemplary embodiment of grooves provided to
receive a mechanical mount of the present invention.
Definitions
When the following terms are used herein, the accompanying definitions
apply:
attaching - the process of fastening, securing, and/or joining.
keyway - a slot for receiving a key.
key - a device that radially constrains two objects such as a fan and a
shaft.
machining - the process of cutting, shaping, and/or finishing by
machine.
motor - a device that converts electrical energy into mechanical
energy to turn a shaft.
mount - that upon which a thing is attached.
mounting - the process of placing in a raised position and/or
attaching.
removably - to be able to move from a place or position occupied.
setscrew - a screw for insertion into a keyway for a conventional
system and method for mounting a key onto a shaft.

DETAIL
Fig. 2A is a cross sectional view 200 of a mechanical mounting of a fan 204
onto a shaft 202 of the present invention. It will be appreciated that the
components shown in Fig. 2A are provided within a motor. FIG. 2B is a close-
up view of fan 204. As shown, neither a keyway nor setscrew is used to
mount the fan as provided in conventional mounting method of Fig. 1
Instead, in an exemplary embodiment, a mechanical mount 206 is provided at
opposing 180 degree positions along the inner disk portion of fan 204.
It will be appreciated that mount 206 is capable of securing the fan to the shaft
to constrain radial and axial movement. In an exemplary embodiment, mount
206 is mounted on fan 204 at a location where the stresses are low, and the
impact of a stress concentration at these areas does not raise overall stress
levels in the fan. One of ordinary skill in the art will recognize that in
alternative embodiments of the present invention, stress on a fan may differ,
so that a different position may be selected for attaching mount 206 to fan
204.
Fig. 3 is a detailed frontal view 300 of an exemplary embodiment of fan 304
that includes a pair of mounts 306. In a present embodiment, a mount 306 is
attached to an inner disc portion 305 of fan 302. As provided, the stresses on
fan 302 result in securement of each mount 306 in a 180 degrees opposing
potion From the other. As shown, mounts 306 are positioned across the y-y
vertical line of fan 304.
As shown, in an exemplary embodiment of the invention, mount 306 includes
two fabricated steel wedges 308. Each wedge 308 includes an aperture 307
for insertion of a bolt to secure mount 306 to fan 304. It will be appreciated
that a securement element, such as a washer is positioned and tightened on
the bolt to secure mount 306 to fan 304. A median 310 is positioned between

wedges 306 to provide additional support to mount 306. It will be appreciated
that in an exemplary embodiment, the elements of mount 306 are composed
of steel. However, it will be appreciated that alternative embodiments of the
present invention may include a mount 306 composed of other hardened
material such as titanium.
Fig. 4 is an external view 400 of an exemplary embodiment of a mount 406
for securing fan 404 to shaft 402. As shown, mount 406 includes two wedges
408 that are separated by a median 410. A bolt is insertable through an
aperture of fan 404 and a corresponding aperture of each wedge 408. It will
be appreciated that a securement element, such as a bolt is threaded to
tightly secure fan 404 to mount 406. An aperture ring 412 extends from each
wedge 408 to protect each bolt and securement element.
A wedge groove 405 and a median groove 403 are machined into shaft 402.
It will be appreciated that the proportions of wedge groove 405 and median
groove 403 are precisely machined to provide for snug-fit securement of
mount 406, to ensure that fan 404 remains attached during operation of a
motor. Wedge groove 405 is machined so that it may firmly secure in place
each wedge 408. Median groove 403 is machined so that it may firmly secure
in place median 410.
Fig. 5 is an external view 500 of an exemplary embodiment of a mount 506
for securing fan 504 to shaft 502. As shown, mount 506 includes two wedges
508 that are separated by a median 510. A bolt is insertable through an
aperture of fan 504 and a corresponding aperture of each wedge 508. It will
be appreciated that a securement element, such as a nut is threaded to tightly
secure fan 504 to mount 506. An aperture ring 512 extends from each wedge
508 to protect each bolt and securement element.
A wedge groove 505 and a median groove 503 are machined into shaft 502.
It will be appreciated that the proportions of wedge groove 505 and median

groove 503 are precisely machined tp provide for snug-fit securement of
mount 506, to ensure that fan 504 remains attached during operation of a
motor. Wedge groove 505 is machined so that it may firmly secure in place
each wedge 508. Median groove 503 is machined so that it may firmly secure
in place median 510.
Fig. 6 is a detailed internal view 600 of an exemplary embodiment of a fan
604 with a mount 606 of the present invention. As shown, mount 606
includes two wedges 608 that are separated by a median 610. A bolt 616 is
insertable through an aperture of fan 604 and a corresponding aperture of
each wedge 608. It will be appreciated that a securement element, such as a
bolt 614 is threaded to tightly secureifan 504 to mount 506. An aperture ring
612 extends from each wedge 608 to protect each bolt and securement
element.
A wedge groove 605 and a median groove 603 are machined into shaft 602.
It will be appreciated that the proportions of wedge groove 605 and median
groove 603 are precisely machined to provide for snug-fit securement of
mount 606, to ensure that fan 604 remains attached during operation of a
motor. Wedge groove 605 is machined so that it may firmly secure in place
each wedge 608. Median groove 603 is machined so that it may firmly secure
in place median 610.
It will be appreciated that the narrow edge 618 and wide edge 620 are
machined to a concave curve that corresponds to the concave curvature of
the inner bottom side of groove 605 of shaft 602. The curvature of narrow
edge 618 matches the curvature of the inner bottom side of groove 605 to
ensure a snug fit relationship between mount 606 and groove 605 of shaft
602.

Fig. 7 is a detailed close up view 700 of an exemplary embodiment of a
mount 706 of the present invention. As shown, mount 706 in an exemplary
embodiment of the invention includes two fabricated steel wedges 708. Each
wedge 708 includes an aperture 707 for insertion of a bolt to secure mount
706 to a device such as a fan. A median 710 is positioned between wedges
708 to provide additional support to mount 706. It will be appreciated that in
an exemplary embodiment, the elements of mount 706 are composed of steel.
However, it will be appreciated that alternative embodiments of the present
invention may include a mount 706 composed of other hardened material
such as titanium.
It will be appreciated that narrow edge 718 and wide edge 720 are machined
to a concave curve that corresponds to the concave curvature of the inner
bottom side of groove 605 of shaft 602. The curvature of narrow edge 718
matches the curvature of the inner bottom side of groove 605 to ensure a
snug fit relationship between mount 706 and groove 605 of shaft 602.
Fig. 8 is a detailed view 800 of an exemplary embodiment of a groove
provided to receive a mount of the present invention. As shown, a wedge
groove 805 and a median groove 803 are machined into shaft 802. It will be
appreciated that the proportions of wedge groove 805 and median groove 803
are precisely machined to provide for snug-fit securement of mount 806, to
ensure that a secured device, such as a fan, remains attached during
operation of a motor. Wedge groove 805 is machined so that it may firmly
secure in place each wedge of the mount. Median groove 803 is machined so
that it may firmly secure in place median 810.
Still other embodiments will become readily apparent to those skilled in this
art from reading the above-recited detailed description and drawings of certain
exemplary embodiments. It should be understood that numerous variations,
modifications, and additional embodiments are possible, and accordingly, all

such variations, modifications, and embodiments are to be regarded as being
within the spirit and scope of this application. For example, regardless of the
content of any portion (e.g., title, field, background, summary, abstract,
drawing figure, etc.) of this application, unless clearly specified to the contrary,
there is no requirement for the inclusion in any claim of any application
claiming priority hereto of any particular described or illustrated activity or
element, any particular sequence of such activities, or any particular
interrelationship of such elements. Moreover, any activity can be repeated,
any activity can be performed by multiple entities, and/or any element can be
duplicated. Further, any activity or element can be excluded, the sequence of
activities can vary, and/or the interrelationship of elements can vary.
Accordingly, the descriptions and drawings are to be regarded as illustrative in
nature, and not as restrictive. Moreover, when any number or range is
described herein, unless clearly stated otherwise, that number or range is
approximate. When any range is described herein, unless clearly stated
otherwise, that range includes all values therein and all subranges therein.
Any information in any material (e.g., a United States patent, United States
patent application, book, article, etc.) that has been incorporated by reference
herein, is only incorporated by reference to the extent that no conflict exists
between such information and the other statements and drawings set forth
herein. In the event of such conflict, including a conflict that would render any
claim seeking priority hereto invalid, then any such conflicting information in
such incorporated by reference material is specifically not incorporated by
reference herein.

WE CLAIM
1. A system for securing a device to a shaft comprising:
a device;
at least two mounts of hardened material secured to the device;
a shaft comprised within a motor and having an axial groove including a
radial groove, wherein the at least two mounts are insertable within the
axial and radial groove to secure and prevent movement of the device,
wherein each mount comprises a first wedge of hardened material, a
second wedge of hardened material; and
a median positioned therebetween the first: and second wedges, and
wherein the first wedge, second wedge and median comprise a single
component of hardened material, the hardened material being galvanized
steel.
2. The system as claimed in claim 1, wherein the device is a fan.
3. The system as claimed in claim 1, comprising:
a plurality of apertures provided in the device, wherein each device
aperture corresponds to an aperture provided within one of the first
wedge and the second wedge of the mount;

a bolt threaded through each of the corresponding apertures of the device
and the aperture of each wedge of the mount; and
a securing element for tightening the bolt to secure the device to the
mount.
4. The system as claimed in claim 3, wherein the securement element is a
nut.
5. The system as claimed in claim 1, comprising:
an external surface of the shaft having a concave shape of a specified
degree of curvature; and
a contact edge of the mount having a concave shape corresponding to the
concave shape of a specified degree of curvature of the radial groove of
the shaft, wherein the corresponding concave shape of a specified degree
of curvature enables a secure fit between the mount and the radial groove
of the shaft to prevent radial and axial movement.
6. A method for securing a device to a shaft comprising:
providing a device;
positioning at least two mounts of hardened material comprising
galvanized steel to the device;
securing the mount to the device; and

inserting the mounts within an axial groove and a radial groove of a shaft
comprised in a motor, wherein the mounts secure the device to prevent
axial and radial movement of the device.
7. The method as claimed in claim 6, wherein each of the mounts comprises:
a first wedge of hardened material;
a second wedge of hardened material; and
a median positioned therebetween the first and second wedges, wherein
the first wedge, second wedge and median comprise a single component
of hardened material.
8. The method as claimed in claim 6, wherein the device is a fan.
9. The method as claimed in claim 6, comprising:
positioning plurality of aperture provided in the device to each of a
corresponding aperture provided within one of the first wedge and the
second wedge of the mount;
threading a bolt through each of the corresponding apertures of the
device and the aperture of each wedge of the mount; and
axially turning a securing element around the bolt to secure the device to
the mount.

10.The method as claimed in claim 6, wherein the securement element is a
nut.
11.The method as claimed in claim 6, comprising:
providing an external surface of the shaft having a concave shape of a
specified degree of curvature;
providing a contact edge of the mount having a concave shape
corresponding to the concave shape of a specified degree of curvature of
the radial groove of the shaft; and
inserting the corresponding concave shape of a specified degree of
curvature between the mount and the radial groove of the shaft to secure
the mount to the shaft to prevent radial and axial movement of the
device.
12.The method as claimed in claim 6, comprising:
securing at least two of the mounts to the device.
13.A system for securing a device to a shaft comprising:
a device;
at least two mounts of hardened material comprising galvanized steel and
having an insertion edge with a concave shape secured to the device; and

a shaft comprised in a motor and having an axial groove having a concave
shape and a radial groove, wherein the mount along the insertion edge is
insertable within the axial and radial groove, the concave shape of the
insertion edge of the mounts and the concave shape of the axial groove
promoting a secure fit between the shaft and the mount to prevent axial
and radial movement of the device.
14.The system as claimed in claim 13, wherein each of the mounts
comprises:
a first wedge of hardened material;
a second wedge of hardened material; and
a median positioned therebetween the first and second wedges, wherein
the first wedge, second wedge and median comprise a single component
of hardened material.

The invention relates to a system for securing a device to a shaft comprising a
device (204); at least two mounts (306) of hardened material (206) secured to
the device (204); a shaft (202) comprised within a motor and having an axial
groove including a radial groove, wherein the at least two mounts (306) are
insertable within the axial and radial groove to secure and prevent movement of
the device (204), wherein each mount (306) comprises a first wedge (308) of
hardened material (206), a second wedge (308) of hardened material (206); and
a median (310) positioned therebetween the first and second wedges (308), and
wherein the first wedge, second wedge (308) and median (310) comprise a
single component of hardened material (206), the hardened material (206) being
galvanized steel.

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Patent Number

227620

Indian Patent Application Number

121/KOLNP/2006

PG Journal Number

03/2009

Publication Date

16-Jan-2009

Grant Date

14-Jan-2009

Date of Filing

13-Jan-2006

Name of Patentee

SIEMENS ENERGY & AUTOMATION, INC.

Applicant Address

3333 OLD MILTON PARKWAY, ALPHARETTA GEORGIA

Inventors:

#	Inventor's Name	Inventor's Address
1	HODOWANEC, MARK	251 EIGHTH STREET APT. 1 JERSEY CITY, NEW JERSEY 07302

PCT International Classification Number

H02K 9/06

PCT International Application Number

PCT/US2004/024075

PCT International Filing date

2004-07-28

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	60/490,863	2003-07-28	U.S.A.