Title of Invention

A FLEXIBLE VEHICLE HOOD ASSEMBLY .

Abstract The invention relates to a vehicle hood assembly includes a hood support (18) having a top section (20) joined to left and right side sections (22, 24) and to a front section (26). An outer panel assembly (30) includes a finished top panel (32) mounted on the top section (20), a finished front panel assembly (34) mounted on the front section (26), a finished left side panel (42) mounted on the left section (22), and a finished right side panel (44) mounted on the right section (24). Each panel (32, 42, 44) and its respective section (20, 22, 24) form and enclose an air space therebetween. Thus, the inner support (18) and the air space is interposed between the finished panels (32, 42, 44) and the heat from the engine (12). As the hood is raised, the lower portions of the side panels (42, 44) engage a wear strip (62) and are deflected laterally outwardly and away from each other. As the hood is lowered, the lower portions of the side panels (42,44) move past the wear strip (62), and they move laterally inwardly and towards each other.
Full Text FIELD OF INVENTION
This invention relates to a hood assembly which covers an engine and other
components of a vehicle, such as an agricultural or industrial vehicle.
BACKGROUND OF INVENTION
It is a known practice to provide a tractor with a hood which encloses the engine
and other components of the tractor. But conventional hoods may have problems
as a result of thermal expansion of various parts of the hood. Conventional
hoods also can interface with visibility forward from a cab of the tractor.
Conventional hoods typically have cosmetically finished panels which are
relatively inflexible and are therefore subject to permanent damage when struck
by an object, and which are directly exposed to heat from the vehicle engine.
OBJECTS OF INVENTION
It is an object of the present invention to provide a vehicle hood assembly with
which the recited problems are overcome and the desires are met. In particular it
is an object of the present invention to provide a vehicle hood assembly which
accommodates thermal expansion of its components. Another object is to
provide such a hood assembly wherein interference with visibility forward from a
cab of the tractor is minimized. A still another object is to provide such a hood

assembly wherein cosmetically finished panels are relatively flexible so as to be
less likely to be permanently damaged when struck by an object. A further object
is to provide such a hood assembly wherein finished panels are not directly
exposed to heat from the vehicle engine.
SUMMARY OF INVENTION
These and other objects including the further advantageous arrangements and
developments are achieved by the described features of the invention.
In an advantageous embodiment of the present invention a vehicle hood
assembly includes an inner hood support having a top section joined top left and
right side sections and to a front section. An outer panel assembly includes a
finished top panel mounted on the top section, a finished front panel assembly
mounted on the front section, a finished left panel mounted on the left section,
and a finished right panel mounted on the right section. Each panel and its
respective section form and enclose an air space therebetween. Thus, the inner
support and the air space is interposed between the finished panels and the heat
from the engine. The inner hood support comprises a heat shield interposed
between the panels and the engine of the vehicle. As the hood is raised, the
lower portions of the side panels engage a wear strip and are deflected laterally
outwardly and way from each other. As the hood is lowered, the lower portions
of the side panels move past the wear strip, and they move laterally inwardly
and towards each other.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The invention and further advantageous developments and arrangements of the
invention will now be described and explained in more detail by way of example
and with reference to the accompanying drawings in which:
Figure 1: is a side view of an agricultural tractor with a hood
assembly according to the invention,
Figure 2: is an exploded perspective view of the hood assembly
of the present invention,
Figure 3: illustrates a wear strip part of the hood assembly of
Figure 1,
Figures 4a and 4b: illustrate the relationship between the hood and the
wear strip in a hood lowered position,
Figures 5a and 5b: illustrate the relationship between the hood and the
wear strip in a hood partially raises position, and
Figures 6a and 6b: illustrate the relationship between the hood and the
wear strip in another hood partially raised position.

DETAIL DESCRIPTION OF PREFERRED EMBODIMENT OF THE
INVENTION
As seen in Figures 1 and 2, an agricultural tractor 10 has an engine 12 which is
located forward of the operator's cab 14 and a hood assembly 16 which is
coupled to the tractor by a hinge 15. As best seen in Figure 2, the hood
assembly 16 includes an inner hood support 18 having a top section 20 joined to
left and right side sections 22, 24, and joined to a front section 26. The hood
support 18 is preferably formed out of plastic material with a higher fiberglass
content for higher rigidity. Top section 20 includes an intake opening 19
positioned to align with an intake air filter (not shown) of the engine 12.
Hood assembly 16 also includes a finished outer panel assembly 30 comprising a
finished top panel 32 mounted on the top section 20, a finished front panel
assembly 34, including a headlight assembly 36, grille 38 and trim piece 40,
mounted on the front section 26, a finished left panel 42 mounted on the left
section 22, and a finished right panel 44 mounted on the right section 24. When
assembled, each panel 32, 42, 44 and its corresponding section 20, 22, 24,
forms and encloses an air space therebetween. The inner support 18 serves as a
heat shield. The inner support 18 and the air space shield the outer hood
assembly 30 from heat from the engine. Top panel 32 includes a pair of engine
air intake ports 46 and 48 formed therein. A plurality of engine air intake slots 50
are formed in a forward end of top section 20. Normally, engine intake air will

flow from ports 46, 48 to opening 19 via the air space formed between panel 32
and section 20. This air space preferably is formed as an air duct. But, if the
ports 46 and 48 are blocked, the engine 12 can still obtain intake air via intake
port, preferably via slots 50. The panels 32, 42 and 44 are preferably formed out
of plastic material with a lower or zero fiberglass content for lower weight and
lower rigidity that the hood support 18.
A plurality of mounting slots 52 are formed in the side sections 22, 24 (although
only left side section 22 is visible in Figure 2). The slots 52 are preferably formed
along a lower edge of side sections 22, 24. A plurality of mounting slots 54 are
formed in the side edges of top panel 32 (although only left side of panel 32 is
visible in Figure 2). Each side panel 42, 44 has an upper array of inwardly
projecting mounting pegs 56 (although only the pegs of right side of panel 44
are visible in Figure 2). When assembled, the mounting pegs 56 are received in
the corresponding slots 54.
Each side panel 42, 44 also has a lower array of inwardly projecting mounting
pegs 58, (although only the pegs of right side of panel 44 are visible in Figure 2).
When assembled, the mounting pegs 58 are received in the corresponding slots
52 in the side sections 22 and 24. As one moves toward the rear of hood support
18, the slots 52 have a progressively longer fore-and-aft dimension to
accommodate expansion and contraction of the panels 42, 44 relative to the side
sections 22, 24 of the hood support 18. As a result, the side panels 42, 44 are
fixed with respect to the top panel 32, and panels 42, 44 and 32 form a unit
which is movable with respect to the inner support 18.

The hood 16 may be held in a raised position by a support rod 60, part of which
is visible in Figure 1. A wear strip 62 is mounted over a rear portion of the
engine 12. As best seen in Figures 3, 4, 5 and 6, the wear strip 62 has a
generally inverted U-shape with downward extending legs 64 and 66. Preferably,
the lower ends of the legs 64 and 66 are firmly attached to a part of the vehicle,
such as a transmission housing. The upper ends of the legs 64 and 66 are
farther apart from each other than are the lower ends of legs 64 and 66. As the
hood 10 is raised, the lower portions of the side panels 42, 44 engage the wear
strip 62 and are deflected laterally outwardly and away from each other.
Conversely, as the hood 10 is lowered, as the lower portions of the side panels
42, 44 move past the wear strip 62, they move laterally inwardly and towards
each other. This inward movement increases the visibility past the hood 10 when
the hood is lowered.
While the present invention has been described in conjunction with a specific
embodiment, it is understood that many alternatives, modifications and
variations will be apparent to those skilled in the art in light of the foregoing
description. Accordingly, this invention is intended to embrace all such
alternatives, modifications and variations which fall within the spirit and scope of
the claims.

We Claim
1. A flexible vehicle hood assembly, comprising:
an inner hood support member (18) pivotally mounted on the
vehicle; and
an outer panel device (30) mounted on the inner hood support
member (18), the outer panel device (30) comprising left and right panels
(42, 44) fixed to a top panel (32), characterized in that the outer panel
device (30) forming a unit which is movable with respect to the inner
support member (18) in response to expansion and contraction of the
panels (42, 44).
2. The hood assembly as claimed in claim 1, wherein:
each side panel (42, 44) has a plurality of mounting pegs (56, 58)
projecting inwardly therefrom; and
the inner hood support member (18) comprises a top section (20)
integrally joined to left and right side sections (22, 24), each section (22,
24) having a plurality of mounting slots (52, 54) formed therein for
releasably receiving the mounting pegs (56, 58) of a corresponding side

panel (42, 44), the mounting slots (52, 54) varying in size to
accommodate expansion and contraction of the side panels (42, 44)
relative to its corresponding section (22, 24).
3. The hood assembly as claimed in claim 1 or 2, wherein:
the inner hood support member (18) comprises a top section (20)
integrally joined to left and right side sections (42, 44); and
each panel (32, 42, 44) and its corresponding section (20, 22, 24)
forming an air space therebetween.
4. The hood assembly as claimed in one of the claims 1 to 3, wherein:
the inner hood support member (18) comprises a heat shield
interposed between the panels (32, 42, 44) and an engine (12) of the
vehicle.
5. The hood assembly as claimed in any of the preceding claims, optionally
comprising:
an inner hood support member (18) pivotally mounted on the
vehicle and comprising a top section (20) integrally joined to left and right
side sections (22, 24); and

an outer panel device (30) comprising left and right side panels
(42, 44) fixed to a top panel (32), wherein the outer panel device (30)
being mounted to the inner support member (18), and the top panel (32)
and the top section (20) forming an intake duct for conducting air to an
air intake of an engine (12) of the vehicle.
6. The hood assembly as claimed in claim 5, wherein:
the top panel (32) has at least one primary engine air intake port
(46, 48) formed therein, and the top section (20) having at least one
auxiliary engine air intake port (50) through which engine intake air can
flow when the primary engine air intake is blocked.
7. The hood assembly as claimed in claim 5 or 6, wherein:
the top panel (32) has an engine intake port (46, 48) formed
therein which communicates air to the intake duct; and
the top section (20) having an intake opening (19) formed therein
for communicating air from the intake duct to the engine.
8. The hood assembly as claimed in one of the claims 5 to 7, wherein:

the top panel (32) and the top section (20) forming an air space
therebetween, engine intake air flowing from the intake port (46, 48) to
the intake opening (19) via said air space.
9. The vehicle hood assembly as claimed in any of the preceding claims,
comprising:
a wear strip (62) mounted on the vehicle;
an inner hood support member (18) pivotally mounted on the
vehicle; and
an outer panel device (30) mounted to the inner support member
(18) and comprising left and right side panels (42, 44), wherein each side
panel (42, 44) having a lower part which slidably engages the wear strip
(62), engagement of the lower part with the wear strip (62) causing the
lower part to flex outwardly as the inner hood support member (18) and
the outer panel device (30) are pivoted upwardly, said lower parts flexing
inwardly and towards each other as the inner hood support member (18)
and the outer panel device (30) are pivoted downwardly.
10.The vehicle hood assembly as claimed in claim 9, wherein:
the wear strip (62) comprises a generally inverted U-shaped
member having a pair of legs (64, 66).

11.The vehicle hood assembly as claimed in claim 10, wherein:
the legs (64, 66) are attached to a housing of a transmission of the
vehicle.

The invention relates to a vehicle hood assembly includes a hood support (18)
having a top section (20) joined to left and right side sections (22, 24) and to a
front section (26). An outer panel assembly (30) includes a finished top panel
(32) mounted on the top section (20), a finished front panel assembly (34)
mounted on the front section (26), a finished left side panel (42) mounted on the
left section (22), and a finished right side panel (44) mounted on the right
section (24). Each panel (32, 42, 44) and its respective section (20, 22, 24) form
and enclose an air space therebetween. Thus, the inner support (18) and the air
space is interposed between the finished panels (32, 42, 44) and the heat from
the engine (12). As the hood is raised, the lower portions of the side panels (42,
44) engage a wear strip (62) and are deflected laterally outwardly and away
from each other. As the hood is lowered, the lower portions of the side panels
(42,44) move past the wear strip (62), and they move laterally inwardly and
towards each other.

Documents:

62-kolnp-2003-granted-abstract.pdf

62-kolnp-2003-granted-assignment.pdf

62-kolnp-2003-granted-claims.pdf

62-kolnp-2003-granted-correspondence.pdf

62-kolnp-2003-granted-description (complete).pdf

62-kolnp-2003-granted-drawings.pdf

62-kolnp-2003-granted-examination report.pdf

62-kolnp-2003-granted-form 1.pdf

62-kolnp-2003-granted-form 18.pdf

62-kolnp-2003-granted-form 2.pdf

62-kolnp-2003-granted-form 26.pdf

62-kolnp-2003-granted-form 3.pdf

62-kolnp-2003-granted-form 5.pdf

62-kolnp-2003-granted-reply to examination report.pdf

62-kolnp-2003-granted-specification.pdf

62-kolnp-2003-granted-translated copy of priority document.pdf


Patent Number 228793
Indian Patent Application Number 62/KOLNP/2003
PG Journal Number 07/2009
Publication Date 13-Feb-2009
Grant Date 11-Feb-2009
Date of Filing 17-Jan-2003
Name of Patentee DEERE & COMPANY
Applicant Address ONE JOHN DEERE PLACE MOLINE, IL
Inventors:
# Inventor's Name Inventor's Address
1 KEEN, ERIC, ALBERT 612 LORRAINE AVENUE, WATERLOO, 1A 50702
PCT International Classification Number B62D 25/10
PCT International Application Number PCT/EP2001/09991
PCT International Filing date 2001-08-30
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 09/661,856 2000-09-14 U.S.A.