Title of Invention	A CIRCUIT BREAKER POLE INSULATED BY SOLID MATERIAL
Abstract	The invention relates to a circuit-breaker pole (1) insulated by solid material, with an electrically non-conductive and dimensionally stable insulating material housing (2), arranged in which is an interrupter (4), which has a fixed contact and a moving contact, which is located opposite the fixed contact on the drive side and is guided in a longitudinally movable manner, the insulating material housing (2) being open on the drive side in order to allow the introduction of a drive movement into the moving contact, and an elastic padding (10) being arranged between the interrupter (4) and the insulating material housing (2), the elastic padding (10) has such self-adhesive properties that an adhesive bond that can only be abrasively released is obtained both with the interrupter (4) and with the insulating material housing (2), in the adhesive bond, the surface adhesion of the elastic padding both to the interrupter and to the insulating material housing is greater than the tear-resistance and/or tear propagation resistance of the elastic padding.

Title of Invention

A CIRCUIT BREAKER POLE INSULATED BY SOLID MATERIAL

Abstract

The invention relates to a circuit-breaker pole (1) insulated by solid material, with an electrically non-conductive and dimensionally stable insulating material housing (2), arranged in which is an interrupter (4), which has a fixed contact and a moving contact, which is located opposite the fixed contact on the drive side and is guided in a longitudinally movable manner, the insulating material housing (2) being open on the drive side in order to allow the introduction of a drive movement into the moving contact, and an elastic padding (10) being arranged between the interrupter (4) and the insulating material housing (2), the elastic padding (10) has such self-adhesive properties that an adhesive bond that can only be abrasively released is obtained both with the interrupter (4) and with the insulating material housing (2), in the adhesive bond, the surface adhesion of the elastic padding both to the interrupter and to the insulating material housing is greater than the tear-resistance and/or tear propagation resistance of the elastic padding.

Full Text	Description Self-adhesive elastomer layer in circuit-breaker poles insulated by solid material The invention relates to a circuit-breaker pole insulated by solid material, with an electrically non-conductive and dimensionally stable insulating material housing, arranged in which is an interrupter, which has a fixed contact and a moving contact, which is located opposite the fixed contact on the drive side and is guided in a longitudinally movable manner, the insulating material housing being open on the drive side in order to allow the introduction of a drive movement into the moving contact, and an elastic padding being arranged between the interrupter and the insulating material housing. Such a circuit-breaker pole is already known from EP 0866481 A2. The circuit-breaker pole disclosed there has a rigid, or in other words dimensionally stable, insulating material housing, in which a vacuum interrupter is fixed. The vacuum interrupter has a stationary fixed contact, which is fixedly connected to a connection piece led out from the insulating material housing. Arranged opposite the fixed contact is a moving contact, which is guided in a longitudinally movable manner with respect to the fixed contact. In this case, the fixed contact and the moving contact protrude into the interior of the vacuum interrupter. In the vacuum interrupter there is a vacuum, which helps to quench an arc that forms between the contacts when they open. In order to allow the introduction of a drive movement into the moving contact, the insulating material housing has on the drive side an inlet opening, through which there extends an operating rod, which is connected to a drive unit by means of an expedient lever mechanism. The moving contact is connected by means of a flexible strip conductor to a second connection piece, which is likewise led out from the insulating material housing and can consequently be contacted from the outside. In the switched-on state, the moving contact lies against the fixed contact, so that a conducting connection is established between the connection pieces led out from the insulating material housing. To interrupt the current flow, the contacts are separated from each other by introducing a drive movement, the arc being quenched when the current of the vacuum interrupter passes through zero. In order to avoid air inclusions, and consequently high voltage peaks, an elastic padding of ethylene propylene, rubber, silicone or silicone rubber is provided between the vacuum interrupter and the dimensionally stable insulating material housing. The elastic padding compensates for different thermal coefficients of the vacuum chamber and thereby prevents cracks from forming in the rigid insulating material housing. To produce the circuit-breaker pole insulated by solid material, the elastic padding is slipped over the vacuum interrupter as a shrink-fit tube. Subsequently, the vacuum interrupter is cast into the insulating material housing by a casting-shaping method. The already known circuit-breaker pole insulated by solid material has the disadvantage that air inclusions can occur in spite of the elastic padding. On account of the voltage peaks thereby produced, in particular at relatively high voltages, there is the risk of leakage currents or partial discharges. A high-power bushing with an encapsulated vacuum interrupter is known from DE 22 40 106. In this case, the vacuum interrupter is completely embedded in the insulating body of the bushing. In order to avoid the formation of cracks due to thermal expansion, an elastic pad is provided between the dimensionally stable insulating body and the vacuum interrupter. To produce the bushing, the vacuum interrupter is coated with a layer of an elastic material, which is for example a cementing or adhesive material. Subsequently, the epoxy resin of the insulating material housing is molded around the vacuum interrupter. The elastic padding disclosed there is flexible and adheres both to the vacuum interrupter and to the encapsulating insulating material housing. On account of the production method, the thickness of the elastic padding is between 1 mm and approximately 6 mm. Polyurethanes and polysulfides are specified as the material for the elastic padding. The object of the invention is to provide a circuit-breaker pole insulated by solid material of the type mentioned at the beginning which can be easily produced and in which air inclusions between the interrupter and the insulating material housing are avoided. The invention achieves this object by the elastic padding having such self-adhesive properties that an adhesive bond that can only be abrasively released is obtained both with the interrupter and with the insulating material housing. According to the invention, the elastic padding consists of a self-adhesive material which develops such a high surface adhesion on the dimensionally stable insulating housing on the one hand and the housing of the interrupter on the other hand that the occurrence of air inclusions between the insulating material housing and the interrupter is avoided, even over relatively long periods in operation. On account of the great adhesive effect, dependable securement of the interrupter in the insulating material housing is obtained. For this reason, it is possible to dimension the insulating material housing in such a way as to allow retrofitting of the interrupter into the insulating material housing. It is therefore possible according to the invention to produce the insulating material housing and the vacuum interrupter independently of each other, subsequently fix the vacuum interrupter in the insulating material housing and finally surround it with the elastic padding, which allows fixed and at the same time elastic securement of the vacuum interrupter. The term abrasive is to be understood within the scope of the invention as meaning that the surface adhesion of the elastic padding both to the interrupter and to the insulating material housing is greater than the tear resistance and/or tear propagation resistance of the elastic padding. The self-adhesion of the elastic padding is advantageously also provided on untreated surfaces. Consequently, the invention dispenses with the need for the laborious use of a surface treatment with primers or the like to provide the self-adhesive effect, whereby the production costs can be lowered still further. The elastic padding expediently has a dielectric strength of at least 20 kv/mm. This high dielectric strength has the effect of providing a compact construction of the circuit-breaker pole insulated by solid material according to the invention. The hardness of the elastic padding expediently has a Shore 00 or Shore A value that lies between 30 and 40. The elongation at break expediently lies between 120 and 500%. The elastic padding is advantageously pore-free. The absence of pores has the effect of avoiding voltage peaks. The interrupter is advantageously a vacuum interrupter, which for example comprises a cylindrical ceramic housing which is covered at the ends by two metal caps. The metal caps are respectively penetrated by contact rods bearing contact pieces, a fixed contact being fixedly connected to the metal cap that is assigned to it. The moving contact, lying opposite the fixed contact in the longitudinal direction, is connected to one end cap by means of a metal bellows, so that said moving contact is guided in a longitudinally movable manner with respect to the fixed contact. The moving contact is connected by means of partly insulating operating rods and by means of a lever mechanism to a drive unit, the drive movement of which is introduced into the moving contact. The dimensionally stable insulating material housing consists for example of cast resin. Other expedient refinements and advantages of the invention are the subject of the following description of exemplary embodiments of the invention with respect to the figure of the accompanying drawing, the figure showing an exemplary embodiment of a circuit-breaker pole insulated by solid material according to the invention, in a sectioned side view. The figure shows an exemplary embodiment of a circuit-breaker pole 1 insulated by solid material according to the invention in a cross-sectional view. The circuit-breaker pole 1 insulated by solid material is intended for interrupting the current flow in a phase of a three-phase network. Since customary three-phase networks have three phases, in commercially available circuit breakers there are usually three circuit-breaker poles 1 insulated by solid material that are set up next to one another and are connected to a common drive unit. The circuit-breaker pole 1 insulated by solid material that is shown has an insulating material housing 2 that is formed from epoxy resin, or in other words casting resin, in which an upper connection piece 3 and a middle connection piece (not represented in the figure) are fixed. In the insulating material housing 2 there can also be seen a vacuum interrupter 4, which is rigidly connected to the connection piece 3 by means of a fixed contact rod 5. The fixed contact rod 5 passes through an end cap 6 consisting of copper, it bearing a fixed contact (not represented in the figure) at its end that is arranged in the interior of the vacuum interrupter 4. The end cap 6 is connected in a vacuum-tight manner to a hollow- cylindrical vacuum housing 7, which consists of ceramic and has on its side opposite from the first end cap 6 a second end cap 8, which in turn is passed through by a moving contact rod 9. The moving contact rod 9 bears at its end protruding into the vacuum interrupter 4 a moving contact, which lies opposite the fixed contact and comes into contact with the fixed contact by introducing a drive movement by means of an operating rod (not represented in the figure). For the longitudinally movable guidance of the moving contact, a bellows (likewise not represented in the figure) is provided and is connected in a vacuum-tight manner by its one end to the end cap 8 and by its other end to the moving contact. In the interior of the vacuum housing comprising the end caps 6 and 8 and also the ceramic housing 7 there is a vacuum, which helps to quench an arc that forms when the contacts separate and an AC current passes through zero. The moving contact rod 9 is electrically connected to the second contact piece by means of a conductor strip (not represented in the figure), so that in a contact position the current is allowed to flow between the connection piece 3 and the second connection piece. On account of different coefficients of thermal expansion, different thermal expansions of the components of the vacuum interrupter 4 occur when there are changes in temperature. In order to avoid air inclusions, an elastic padding 10 is therefore provided between the vacuum interrupter 4 and the insulating material housing 2. The elastic padding 10 has such high self-adhesive forces that it fixedly connects the vacuum interrupter 4 to the insulating material housing 2 . In this case, the elastic padding has an elongation at break of approximately 200% and a high dielectric strength, so that the necessary dielectric strength of the vacuum interrupter 4 is provided. On account of the great self-adhesion, the occurrence of air inclusions is avoided, even over relatively long periods in operation under adverse environmental conditions. In this case, the elastic padding has a thickness of between approximately 0.3 cm and 3 cm, so as to allow easy fitting of the vacuum interrupter into the dimensionally stable insulating material housing 2. For example, it is possible according to the invention to form the insulating material housing 2 by the shaping- casting method. Subsequently, the connection piece 3 is screwed to the fixed contact rod 4 and the elastic padding 10 is introduced by filling. WE CLAIM 1. A circuit-breaker pole (1) insulated by solid material, with an electrically non-conductive and dimensionally stable insulating material housing (2), arranged in which is an interrupter (4), which has a fixed contact and a moving contact, which is located opposite the fixed contact on the drive side and is guided in a longitudinally movable manner, the insulating material housing (2) being open on the drive side in order to allow the introduction of a drive movement into the moving contact, and an elastic padding (10) being arranged between the interrupter (4) and the insulating material housing (2), characterized in that the elastic padding (10) has such self-adhesive properties that an adhesive bond that can only be abrasively released is obtained both with the interrupter (4) and with the insulating material housing (2), characterized in that, in the adhesive bond, the surface adhesion of the elastic padding both to the interrupter and to the insulating material housing is greater than the tear- resistance and/or tear propagation resistance of the elastic padding. 2. The circuit-breaker pole (1) insulated by solid material as claimed in claim 1, wherein the elastic padding (10) develops the self-adhesive properties even on untreated surfaces. 3. The circuit-breaker pole (1) insulated by solid material as claimed in claim 1 or 2, wherein the elastic padding (10) has a dielectric strength of at least 2 0 kV/mm. 4. The circuit-breaker pole (1) insulated by solid material as claimed in one of the preceding claims, wherein the elastic padding (10) has a low hardness with a Shore 00 or Shore A value that lies between 30 and 40. 5. The circuit-breaker pole (1) insulated by solid material as claimed in one of the preceding claims, wherein the elastic padding (10) has an elongation at break of between 120 and 400%. 6. The circuit-breaker pole (1) insulated by solid material as claimed in one of the preceding claims, wherein the elastic padding (10) is pore-free. ABSTRACT TITLE : "A CIRCUIT BREAKER POLE INSULATED BY SOLID MATERIAL" The invention relates to a circuit-breaker pole (1) insulated by solid material, with an electrically non-conductive and dimensionally stable insulating material housing (2), arranged in which is an interrupter (4), which has a fixed contact and a moving contact, which is located opposite the fixed contact on the drive side and is guided in a longitudinally movable manner, the insulating material housing (2) being open on the drive side in order to allow the introduction of a drive movement into the moving contact, and an elastic padding (10) being arranged between the interrupter (4) and the insulating material housing (2), the elastic padding (10) has such self-adhesive properties that an adhesive bond that can only be abrasively released is obtained both with the interrupter (4) and with the insulating material housing (2), in the adhesive bond, the surface adhesion of the elastic padding both to the interrupter and to the insulating material housing is greater than the tear-resistance and/or tear propagation resistance of the elastic padding.

Full Text

Description
Self-adhesive elastomer layer in circuit-breaker poles
insulated by solid material
The invention relates to a circuit-breaker pole insulated by
solid material, with an electrically non-conductive and
dimensionally stable insulating material housing, arranged in
which is an interrupter, which has a fixed contact and a moving
contact, which is located opposite the fixed contact on the
drive side and is guided in a longitudinally movable manner,
the insulating material housing being open on the drive side in
order to allow the introduction of a drive movement into the
moving contact, and an elastic padding being arranged between
the interrupter and the insulating material housing.
Such a circuit-breaker pole is already known from EP 0866481
A2. The circuit-breaker pole disclosed there has a rigid, or
in other words dimensionally stable, insulating material
housing, in which a vacuum interrupter is fixed. The vacuum
interrupter has a stationary fixed contact, which is fixedly
connected to a connection piece led out from the insulating
material housing. Arranged opposite the fixed contact is a
moving contact, which is guided in a longitudinally movable
manner with respect to the fixed contact. In this case, the
fixed contact and the moving contact protrude into the interior
of the vacuum interrupter. In the vacuum interrupter there is
a vacuum, which helps to quench an arc that forms between the
contacts when they open. In order to allow the introduction of
a drive movement into the moving contact, the insulating
material housing has on the drive side an inlet opening,
through which there extends an operating rod, which is
connected to a drive unit by means of an expedient lever
mechanism. The moving contact

is connected by means of a flexible strip conductor to a second
connection piece, which is likewise led out from the insulating
material housing and can consequently be contacted from the
outside. In the switched-on state, the moving contact lies
against the fixed contact, so that a conducting connection is
established between the connection pieces led out from the
insulating material housing. To interrupt the current flow,
the contacts are separated from each other by introducing a
drive movement, the arc being quenched when the current of the
vacuum interrupter passes through zero.
In order to avoid air inclusions, and consequently high voltage
peaks, an elastic padding of ethylene propylene, rubber,
silicone or silicone rubber is provided between the vacuum
interrupter and the dimensionally stable insulating material
housing. The elastic padding compensates for different thermal
coefficients of the vacuum chamber and thereby prevents cracks
from forming in the rigid insulating material housing. To
produce the circuit-breaker pole insulated by solid material,
the elastic padding is slipped over the vacuum interrupter as a
shrink-fit tube. Subsequently, the vacuum interrupter is cast
into the insulating material housing by a casting-shaping
method.
The already known circuit-breaker pole insulated by solid
material has the disadvantage that air inclusions can occur in
spite of the elastic padding. On account of the voltage peaks
thereby produced, in particular at relatively high voltages,
there is the risk of leakage currents or partial discharges.
A high-power bushing with an encapsulated vacuum interrupter is
known from DE 22 40 106. In this case, the vacuum interrupter
is completely embedded in the insulating body of the bushing.
In order to avoid the formation of cracks due to thermal
expansion,

an elastic pad is provided between the dimensionally stable
insulating body and the vacuum interrupter. To produce the
bushing, the vacuum interrupter is coated with a layer of an
elastic material, which is for example a cementing or adhesive
material. Subsequently, the epoxy resin of the insulating
material housing is molded around the vacuum interrupter. The
elastic padding disclosed there is flexible and adheres both to
the vacuum interrupter and to the encapsulating insulating
material housing. On account of the production method, the
thickness of the elastic padding is between 1 mm and
approximately 6 mm. Polyurethanes and polysulfides are
specified as the material for the elastic padding.
The object of the invention is to provide a circuit-breaker
pole insulated by solid material of the type mentioned at the
beginning which can be easily produced and in which air
inclusions between the interrupter and the insulating material
housing are avoided.
The invention achieves this object by the elastic padding
having such self-adhesive properties that an adhesive bond that
can only be abrasively released is obtained both with the
interrupter and with the insulating material housing.
According to the invention, the elastic padding consists of a
self-adhesive material which develops such a high surface
adhesion on the dimensionally stable insulating housing on the
one hand and the housing of the interrupter on the other hand
that the occurrence of air inclusions between the insulating
material housing and the interrupter is avoided, even over
relatively long periods in operation. On account of the great
adhesive effect, dependable securement of the interrupter in
the insulating material

housing is obtained. For this reason, it is possible to
dimension the insulating material housing in such a way as to
allow retrofitting of the interrupter into the insulating
material housing. It is therefore possible according to the
invention to produce the insulating material housing and the
vacuum interrupter independently of each other, subsequently
fix the vacuum interrupter in the insulating material housing
and finally surround it with the elastic padding, which allows
fixed and at the same time elastic securement of the vacuum
interrupter. The term abrasive is to be understood within the
scope of the invention as meaning that the surface adhesion of
the elastic padding both to the interrupter and to the
insulating material housing is greater than the tear resistance
and/or tear propagation resistance of the elastic padding.
The self-adhesion of the elastic padding is advantageously also
provided on untreated surfaces. Consequently, the invention
dispenses with the need for the laborious use of a surface
treatment with primers or the like to provide the self-adhesive
effect, whereby the production costs can be lowered still
further.
The elastic padding expediently has a dielectric strength of at
least 20 kv/mm. This high dielectric strength has the effect
of providing a compact construction of the circuit-breaker pole
insulated by solid material according to the invention.
The hardness of the elastic padding expediently has a Shore 00
or Shore A value that lies between 30 and 40.

The elongation at break expediently lies between 120 and 500%.
The elastic padding is advantageously pore-free. The absence
of pores has the effect of avoiding voltage peaks.
The interrupter is advantageously a vacuum interrupter, which
for example comprises a cylindrical ceramic housing which is
covered at the ends by two metal caps. The metal caps are
respectively penetrated by contact rods bearing contact pieces,
a fixed contact being fixedly connected to the metal cap that
is assigned to it. The moving contact, lying opposite the
fixed contact in the longitudinal direction, is connected to
one end cap by means of a metal bellows, so that said moving
contact is guided in a longitudinally movable manner with
respect to the fixed contact. The moving contact is connected
by means of partly insulating operating rods and by means of a
lever mechanism to a drive unit, the drive movement of which is
introduced into the moving contact.
The dimensionally stable insulating material housing consists
for example of cast resin.
Other expedient refinements and advantages of the invention are
the subject of the following description of exemplary
embodiments of the invention with respect to the figure of the
accompanying drawing,
the figure showing an exemplary embodiment of a circuit-breaker
pole insulated by solid material according to the invention, in
a sectioned side view.

The figure shows an exemplary embodiment of a circuit-breaker
pole 1 insulated by solid material according to the invention
in a cross-sectional view. The circuit-breaker pole 1
insulated by solid material is intended for interrupting the
current flow in a phase of a three-phase network. Since
customary three-phase networks have three phases, in
commercially available circuit breakers there are usually three
circuit-breaker poles 1 insulated by solid material that are
set up next to one another and are connected to a common drive
unit.
The circuit-breaker pole 1 insulated by solid material that is
shown has an insulating material housing 2 that is formed from
epoxy resin, or in other words casting resin, in which an upper
connection piece 3 and a middle connection piece (not
represented in the figure) are fixed. In the insulating
material housing 2 there can also be seen a vacuum interrupter
4, which is rigidly connected to the connection piece 3 by
means of a fixed contact rod 5. The fixed contact rod 5 passes
through an end cap 6 consisting of copper, it bearing a fixed
contact (not represented in the figure) at its end that is
arranged in the interior of the vacuum interrupter 4. The end
cap 6 is connected in a vacuum-tight manner to a hollow-
cylindrical vacuum housing 7, which consists of ceramic and has
on its side opposite from the first end cap 6 a second end cap
8, which in turn is passed through by a moving contact rod 9.
The moving contact rod 9 bears at its end protruding into the
vacuum interrupter 4 a moving contact, which lies opposite the
fixed contact and comes into contact with the fixed contact by
introducing a drive movement by means of an operating rod (not
represented in the figure).
For the longitudinally movable guidance of the moving contact,
a bellows (likewise not represented in the figure) is provided

and is connected in a vacuum-tight manner by its one end to the
end cap 8 and by its other end to the moving contact.
In the interior of the vacuum housing comprising the end caps 6
and 8 and also the ceramic housing 7 there is a vacuum, which
helps to quench an arc that forms when the contacts separate
and an AC current passes through zero. The moving contact rod
9 is electrically connected to the second contact piece by
means of a conductor strip (not represented in the figure), so
that in a contact position the current is allowed to flow
between the connection piece 3 and the second connection piece.
On account of different coefficients of thermal expansion,
different thermal expansions of the components of the vacuum
interrupter 4 occur when there are changes in temperature. In
order to avoid air inclusions, an elastic padding 10 is
therefore provided between the vacuum interrupter 4 and the
insulating material housing 2. The elastic padding 10 has such
high self-adhesive forces that it fixedly connects the vacuum
interrupter 4 to the insulating material housing 2 . In this
case, the elastic padding has an elongation at break of
approximately 200% and a high dielectric strength, so that the
necessary dielectric strength of the vacuum interrupter 4 is
provided. On account of the great self-adhesion, the
occurrence of air inclusions is avoided, even over relatively
long periods in operation under adverse environmental
conditions.
In this case, the elastic padding has a thickness of between
approximately 0.3 cm and 3 cm, so as to allow easy fitting of
the vacuum interrupter into the dimensionally stable insulating
material housing 2. For example, it is possible according to
the invention

to form the insulating material housing 2 by the shaping-
casting method. Subsequently, the connection piece 3 is
screwed to the fixed contact rod 4 and the elastic padding 10
is introduced by filling.

WE CLAIM
1. A circuit-breaker pole (1) insulated by solid material, with an electrically
non-conductive and dimensionally stable insulating material housing (2),
arranged in which is an interrupter (4), which has a fixed contact and a
moving contact, which is located opposite the fixed contact on the drive
side and is guided in a longitudinally movable manner, the insulating
material housing (2) being open on the drive side in order to allow the
introduction of a drive movement into the moving contact, and an elastic
padding (10) being arranged between the interrupter (4) and the
insulating material housing (2), characterized in that the elastic padding
(10) has such self-adhesive properties that an adhesive bond that can
only be abrasively released is obtained both with the interrupter (4) and
with the insulating material housing (2), characterized in that, in the
adhesive bond, the surface adhesion of the elastic padding both to the
interrupter and to the insulating material housing is greater than the tear-
resistance and/or tear propagation resistance of the elastic padding.
2. The circuit-breaker pole (1) insulated by solid material as claimed in claim
1, wherein the elastic padding (10) develops the self-adhesive properties
even on untreated surfaces.
3. The circuit-breaker pole (1) insulated by solid material as claimed in claim
1 or 2, wherein the elastic padding (10) has a dielectric strength of at
least 2 0 kV/mm.

4. The circuit-breaker pole (1) insulated by solid material as claimed in one
of the preceding claims, wherein the elastic padding (10) has a low
hardness with a Shore 00 or Shore A value that lies between 30 and 40.
5. The circuit-breaker pole (1) insulated by solid material as claimed in one
of the preceding claims, wherein the elastic padding (10) has an
elongation at break of between 120 and 400%.
6. The circuit-breaker pole (1) insulated by solid material as claimed in one
of the preceding claims, wherein the elastic padding (10) is pore-free.

ABSTRACT

TITLE : "A CIRCUIT BREAKER POLE INSULATED BY SOLID MATERIAL"
The invention relates to a circuit-breaker pole (1) insulated by solid material,
with an electrically non-conductive and dimensionally stable insulating material
housing (2), arranged in which is an interrupter (4), which has a fixed contact
and a moving contact, which is located opposite the fixed contact on the drive
side and is guided in a longitudinally movable manner, the insulating material
housing (2) being open on the drive side in order to allow the introduction of a
drive movement into the moving contact, and an elastic padding (10) being
arranged between the interrupter (4) and the insulating material housing (2), the
elastic padding (10) has such self-adhesive properties that an adhesive bond that
can only be abrasively released is obtained both with the interrupter (4) and with
the insulating material housing (2), in the adhesive bond, the surface adhesion of
the elastic padding both to the interrupter and to the insulating material housing
is greater than the tear-resistance and/or tear propagation resistance of the
elastic padding.

Documents:

01019-kolnp-2007-abstract.pdf

01019-kolnp-2007-claims.pdf

01019-kolnp-2007-correspondence others 1.1.pdf

01019-kolnp-2007-correspondence others.pdf

01019-kolnp-2007-description complete.pdf

01019-kolnp-2007-drawings.pdf

01019-kolnp-2007-form 1.pdf

01019-kolnp-2007-form 2.pdf

01019-kolnp-2007-form 3.pdf

01019-kolnp-2007-form 5.pdf

01019-kolnp-2007-gpa.pdf

01019-kolnp-2007-international publication.pdf

01019-kolnp-2007-international search report.pdf

01019-kolnp-2007-pct others.pdf

01019-kolnp-2007-pct request form.pdf

01019-kolnp-2007-priority document.pdf

1019-KOLNP-2007-(12-10-2011)-ABSTRACT.pdf

1019-KOLNP-2007-(12-10-2011)-AMANDED CLAIMS.pdf

1019-KOLNP-2007-(12-10-2011)-DESCRIPTION (COMPLETE).pdf

1019-KOLNP-2007-(12-10-2011)-DRAWINGS.pdf

1019-KOLNP-2007-(12-10-2011)-EXAMINATION REPORT REPLY RECIEVED.pdf

1019-KOLNP-2007-(12-10-2011)-FORM 1.pdf

1019-KOLNP-2007-(12-10-2011)-FORM 2.pdf

1019-KOLNP-2007-(12-10-2011)-FORM 3.pdf

1019-KOLNP-2007-(12-10-2011)-OTHERS.pdf

1019-KOLNP-2007-(12-10-2011)-PA.pdf

1019-KOLNP-2007-(12-10-2011)-PETION UNDER RULE 137.pdf

1019-KOLNP-2007-CORRESPONDENCE 1.1.PDF

1019-KOLNP-2007-CORRESPONDENCE 1.2.pdf

1019-KOLNP-2007-EXAMINATION REPORT.pdf

1019-KOLNP-2007-FORM 18.pdf

1019-KOLNP-2007-FORM 3.pdf

1019-KOLNP-2007-FORM 5.pdf

1019-KOLNP-2007-GPA.pdf

1019-KOLNP-2007-GRANTED-ABSTRACT.pdf

1019-KOLNP-2007-GRANTED-CLAIMS.pdf

1019-KOLNP-2007-GRANTED-DESCRIPTION (COMPLETE).pdf

1019-KOLNP-2007-GRANTED-DRAWINGS.pdf

1019-KOLNP-2007-GRANTED-FORM 1.pdf

1019-KOLNP-2007-GRANTED-FORM 2.pdf

1019-KOLNP-2007-GRANTED-SPECIFICATION.pdf

1019-KOLNP-2007-OTHERS.pdf

1019-KOLNP-2007-REPLY TO EXAMINATION REPORT.pdf

1019-KOLNP-2007-TRANSLATED COPY OF PRIORITY DOCUMENT.pdf

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Patent Number

254831

Indian Patent Application Number

1019/KOLNP/2007

PG Journal Number

52/2012

Publication Date

28-Dec-2012

Grant Date

24-Dec-2012

Date of Filing

22-Mar-2007

Name of Patentee

SIEMENS AKTIENGESELLSCHAFT

Applicant Address

WITTELSBACHERPLATZ 2, 80333 MUNCHEN

Inventors:

#	Inventor's Name	Inventor's Address
1	VOLKMAR, RALF-REINER	TRIFTSTR. 39, 13353 BERLIN

PCT International Classification Number

H01H 33/66

PCT International Application Number

PCT/EP2005/054543

PCT International Filing date

2005-09-13

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	102004047276.9	2004-09-24	Germany