U.S. patent application number 09/900215 was filed with the patent office on 2002-03-28 for pedal lift system for lawn tractor mower deck.
Invention is credited to Swartzendruber, James A..
Application Number | 20020035825 09/900215 |
Document ID | / |
Family ID | 46204189 |
Filed Date | 2002-03-28 |
United States Patent
Application |
20020035825 |
Kind Code |
A1 |
Swartzendruber, James A. |
March 28, 2002 |
Pedal lift system for lawn tractor mower deck
Abstract
A foot pedal lift system is provided for the mower deck of a
lawn or garden tractor. The foot pedal is pivotally mounted to the
frame of the tractor and is linked to the linkage arms which
suspend the mower deck from the frame. The pedal is movable between
a depressed forward position to raise the mower deck to a transport
position and a retracted rearward position to move the mower deck
to a lower removal position. The pedal can be locked in the
depressed or retracted positions by a latch pivotally mounted on
the exterior of the tractor console. Engagement and disengagement
of the latch with the foot pedal is controlled by a handle mounted
on the console connected to the latch by an elongated connecting
rod. Pulling upwardly on the handle locks the latch into engagement
with the foot pedal in both the depressed and retracted positions.
Pushing downwardly on the handle disengages the latch from the foot
pedal so that the mower deck is free to move upwardly or
downwardly.
Inventors: |
Swartzendruber, James A.;
(West Bend, WI) |
Correspondence
Address: |
ZARLEY MCKEE THOMTE VOORHEES & SEASE PLC
SUITE 3200
801 GRAND AVENUE
DES MOINES
IA
50309-2721
US
|
Family ID: |
46204189 |
Appl. No.: |
09/900215 |
Filed: |
July 6, 2001 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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09900215 |
Jul 6, 2001 |
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09638991 |
Aug 15, 2000 |
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Current U.S.
Class: |
56/16.3 ;
56/14.7; 56/14.9 |
Current CPC
Class: |
A01D 2101/00 20130101;
A01D 34/64 20130101 |
Class at
Publication: |
56/16.3 ;
56/14.9; 56/14.7 |
International
Class: |
A01D 034/03; A01D
034/43; A01D 034/00 |
Claims
What is claimed is:
1. An improved lawn and garden tractor having a frame, a mower deck
suspended beneath the frame, and a console with mowing controls,
the improvement comprising: a foot pedal operatively connected to
the deck and pivotally mounted to the frame for movement between
forward and rearward positions to move the deck between transport
and removal positions, respectively; a latch mounted on the console
and movable between first and second positions to selectively
retain the pedal in the forward and rearward positions; and a
control member connected to the latch for moving the latch between
the first and second positions.
2. The tractor of claim 1 wherein the control member is a manually
operated handle.
3. The tractor of claim 2 wherein the handle is mounted on the
console.
4. The tractor of claim 1 wherein the foot pedal includes a plate
having opposite forward and rearward ends adapted to be engaged by
the latch when the latch moves to the first position from the
second position.
5. The tractor of claim 1 wherein the latch is pivotally mounted to
the console.
6. The tractor of claim 1 wherein the latch is mounted to an
external surface of the console.
7. The tractor of claim 1 further comprising a spring extending
between the frame and pedal to bias the pedal toward the forward
position.
8. The tractor of claim 1 wherein the latch has first and second
ends and is pivotally connected to the console between the first
and second ends, and the control member is connected to the second
end of the latch.
9. The tractor of claim 8 wherein the control member includes a
handle mounted on the console and a connecting rod having a first
end connected to the handle and a second end connected to the
second end of the latch.
10. The tractor of claim 9 wherein the second end of the connecting
rod extends through an elongated slot in the console and moves
along the slot upon actuation of the handle.
11. A lawn mower, comprising: a frame; wheels mounted to the frame;
a deck adjustably mounted to the frame, and having at least one
rotatable cutting blade; a motor supported by the frame and being
drivingly connected to the cutting blade and to the wheels; a seat
on the frame upon which a rider may sit; a foot pedal pivotally
mounted on the frame and linked to the deck to raise and lower the
deck; and a latch engageable with the foot pedal to limit movement
of the deck.
12. The lawn mower of claim 11 further comprising a control member
connected to the latch to control engagement and disengagement of
the latch and the foot pedal.
13. The lawn mower of claim 12 wherein the control member is a
handle for actuation by the rider.
14. The lawn mower of claim 11 further comprising a console on the
frame for housing mower controls.
15. The lawn mower of claim 14 wherein the latch is pivotally
mounted on an exterior portion of the console.
16. The lawn mower of claim 11 further comprising a spring
extending between the frame and foot pedal to facilitate raising of
the deck.
17. The lawn mower of claim 11 wherein the foot pedal is depressed
by the rider to raise the deck and the latch engages the depressed
pedal to retain the deck in a raised position.
18. The lawn mower of claim 17 wherein the latch is disengageable
from the depressed pedal such that the deck will move by gravity to
a lower position and thereby retract the foot pedal.
19. The lawn mower of claim 18 wherein the latch is engageable with
the retracted pedal to retain the deck in the lower position.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a Continuation-In-Part of pending
application U.S. Ser. No. 09/638,991 filed on Aug. 15, 2000.
BACKGROUND OF THE INVENTION
[0002] 1) Field of the Invention
[0003] The present invention relates generally to lawn and garden
tractors having a mowing deck, and more specifically, to a foot
pedal system for raising and lowering the deck.
[0004] 2) Related Art
[0005] Lawn and garden tractors conventionally have a mower deck
suspended from a frame, with the deck being raised and lowered by
means of a hand-actuated lever. Such a hand lever necessarily
requires strength in the operator's arm and back. Movement of the
hand lever includes a risk of back strain to the operator, who
normally is bending over or leaning forward from the tractor seat
to operate the lever. Full raising of the deck is particularly
desirable for transport of the tractor when the mower blades are
not engaged for cutting. Complete lowering of the deck is necessary
when the deck is to be removed from the tractor for maintenance or
other purposes.
BRIEF SUMMARY OF THE INVENTION
[0006] Therefore, a primary objective of the present invention is
the provision of a pedal lift system for raising and lowering the
mower deck of a lawn or garden tractor.
[0007] Another objective of the present invention is the provision
of a foot pedal for use by a person sitting on the seat of a lawn
or garden tractor to raise and lower the mower deck.
[0008] A further objective of the present invention is the
provision of foot pedal lift system for a lawn tractor mower deck
which can be quickly and easily actuated for raising and lowering
the mower deck.
[0009] Another objective of the present invention is the provision
of a foot pedal for raising and lowering the mower deck of a lawn
or garden tractor which can be latched to retain the deck in a
raised or lowered position.
[0010] In accordance with the above objectives, the lawn tractor of
the present invention has a foot pedal pivotally mounted to the
frame and linked to the deck to move the deck between a raised
transport position and a lowered deck-removal position. A latch is
pivotally mounted to an exterior portion of the tractor console,
and is adapted to engage the foot pedal to retain the pedal in a
forward depressed position wherein the deck is raised and a
rearward retracted position wherein the deck is lowered. A manually
operated handle mounted on the console is connected to the latch so
as to manually actuate the latch for engagement with or
disengagement from the foot pedal. A spring extends between the
frame and the foot pedal to bias the pedal toward the forward
position.
[0011] The objectives, features and advantages of the present
invention will become apparent to one skilled in the art upon
reading the following detailed description in view of the
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] FIG. 1 is a rear perspective view of the lawn tractor frame
with the foot pedal of the present invention latched in a forward
position.
[0013] FIG. 2 is another perspective view of the tractor frame with
the foot pedal latched in the forward position.
[0014] FIG. 3 is a view similar to FIG. 2 showing the foot pedal in
an unlatched rearward position.
[0015] FIG. 4 is a view similar to FIG. 3 showing the foot pedal in
an unlatched rearward position.
[0016] FIG. 5 is a view similar to FIG. 2 showing the foot pedal
latched in the rearward retracted position.
[0017] FIG. 6 is a partial front elevation view showing the foot
pedal and latch assembly.
[0018] FIG. 7 is a perspective view showing an internal portion of
the tractor console with the latch and connecting rod.
DESCRIPTION OF THE PREFERRED EMBODIMENT
[0019] The improved lawn or garden tractor of the present invention
includes a frame 10 with a console 12 mounted thereon. The frame 10
is supported by wheels (not shown), and a motor (not shown) is
mounted on the frame for driving the wheels. A seat (not shown) is
also provided upon which an operator can sit. The console 12
includes the ignition and steering wheel, as well as other controls
(not shown). A mower deck (not shown) is suspended from the frame
10 on a rock shaft 14 and linkages, including lift links 16 and
lost motion links 18. The rock shaft 14 is connected to an
adjustment assembly, including a stepped wheel (not shown), to
adjust the height of the mower deck.
[0020] The above described structure of the tractor is
conventional, and does not constitute a part of the present
invention.
[0021] The present invention is directed towards a pedal lift
system for moving the mower deck between a raised transport
position and a lowered deck-removal position. More particularly,
the pedal lift system of the present invention includes a foot
pedal 20 connected to a plate 22. The plate 22 is mounted on a
collar or shaft 24 which is pivotally mounted on the frame 10, such
that the foot pedal 20 and plate 22 are pivotal about the
horizontal axis of the collar 24. The foot pedal is movable between
a depressed forward position, shown in FIGS. 1 and 2, and a
retracted rearward position, shown in FIGS. 3, 4 and 5.
[0022] A latch 26 is pivotally mounted to an external portion of
the console 12. The latch is adapted to engage the plate 22 so as
to retain the foot pedal 20 in the forward and retracted
positions.
[0023] More particularly, the latch 26 is mounted on a hollow shaft
28 and retained by a clip 30. The shaft 28 extends through a hole
in the console, and has an enlarged flange 29 on the backside which
is welded to the inner surface of the console 12, as seen in FIG.
7.
[0024] The latch 26 includes opposite first and second ends 32, 34.
The first end 32 of the latch 26 includes an outwardly extending
projection 36 having opposing forward and rearward sides 38, 40,
respectively. The forward surface 38 of the projection 36 is
adapted to engage a rear notch 42 on the plate 22 so as to retain
the foot pedal 20 in the forward position, as seen in FIGS. 1 and
2. The rearward surface 40 of the projection 36 is adapted to
engage a front notch 44 on the plate 22 to retain the foot pedal 20
in the rearward position, as seen in FIG. 5.
[0025] Movement of the latch 26 is accomplished by a control member
including a handle 46 projecting from the console 12 and a
connecting rod 48 extending between the handle 46 and the latch 26.
The lower end 50 of the connecting rod 48 extends through a slot 52
in the sidewall of the console 12 and is secured to the second end
34 of the latch 26 by a pin or any other convenient means. The
latch includes an inner yoke 53 extending along the inner wall of
the console 12, as seen in FIG. 7. The yoke 53 has a stub shaft
53A, as seen in FIG. 2, extending into the hollow shaft 28. The end
50 of the connecting rod 48 is retained in the yoke 53 by a spring
55 hooked around the rod 48 and a portion of the console 12. The
spring 55 serves as an over-center spring holding the rod 48 and
yoke 53 in the raised or lowered position within the slot 52.
[0026] The handle 46 can be pulled upwardly by the operator,
thereby pulling the rod 48 upwardly so as to pivot the latch 26 in
a counterclockwise direction as seen in FIG. 1 so as to engage one
end or the other of the plate 22. Conversely, when the handle 46 is
pushed downwardly, the connecting rod 48 moves downwardly within
the slot 52 to pivot the latch 26 in a clockwise direction, as seen
in FIG. 1, so as to disengage the latch 26 from the plate 22.
[0027] The pivotal movement of the foot pedal 20 is transferred to
the mower deck by a rod or link 54 extending between the plate 22
and a linkage arm 56. Thus, when the foot pedal 20 is depressed to
pivot to the forward position, the plate 22 pulls the rod 54 and
linkage arm 56 forwardly to thereby raise the mower deck to the
transport position. The handle 46 is then pulled upwardly such that
the forward side of the projection 36 of the latch 26 engages the
rear notch 42 on the plate 22 so as to retain the mower deck in the
transport position. An optional spring 58 extends between the frame
10 and the plate 22 so as to urge the plate 22 and the foot pedal
20 toward the depressed forward position, thereby facilitating
movement of the mower deck to the raised position.
[0028] When it is desired to lower the mower deck from the
transport position, the foot pedal 20 is depressed slightly
further, and the handle 46 is pushed downwardly so as to pivot the
latch 26 out of engagement with the rear notch 42 of the plate 22.
The foot pedal 20 can then be released, such that the mower deck
will move downwardly by gravity, overcoming the bias of the spring
58, if so equipped. The deck can be moved to a lower most removal
position in engagement with the ground for removal in a
conventional manner. When the deck is fully lowered, the foot pedal
20 and the plate 22 will be in the position shown in FIG. 4. The
deck can be locked against movement away from the removal position
by pulling the handle 46 upwardly so as to pivot the latch 26 such
that the rear side 40 of the projection 36 engages the forward
notch 44 of the plate 22, as seen in FIG. 5.
[0029] Whereas the invention has been shown and described in
connection with the preferred embodiment thereof, it will be
understood that any modifications, substitutions, and additions may
be made which are within the intended broad scope of the following
claims. From the foregoing, it can be seen that the present
invention accomplishes at least all of the stated objectives.
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