U.S. patent application number 11/270409 was filed with the patent office on 2007-05-10 for lawn mower.
Invention is credited to Dale V. Barlow, Randy Kent Hall, Michael A. Scott.
Application Number | 20070101692 11/270409 |
Document ID | / |
Family ID | 37735236 |
Filed Date | 2007-05-10 |
United States Patent
Application |
20070101692 |
Kind Code |
A1 |
Barlow; Dale V. ; et
al. |
May 10, 2007 |
Lawn mower
Abstract
A lawn mower includes a cutting device placed underneath a mower
deck housing that surrounds the cutting device. The lawn mower
further comprises a grass outlet in the mower deck housing. The
outlet is leading cut grass via a discharge chute to a bag where
the grass is collected. The end of the discharge chute is provided
with a door that closes the discharge chute when the bag is removed
from the lawn mower. The door is rotatable around an axis parallel
to the axial direction of the discharge chute and automatically
rotated to not cover the end of the discharge chute when the bag is
secured to the lawn mower.
Inventors: |
Barlow; Dale V.; (Dublin,
GA) ; Scott; Michael A.; (Dublin, GA) ; Hall;
Randy Kent; (Dublin, GA) |
Correspondence
Address: |
PEARNE & GORDON LLP
1801 EAST 9TH STREET
SUITE 1200
CLEVELAND
OH
44114-3108
US
|
Family ID: |
37735236 |
Appl. No.: |
11/270409 |
Filed: |
November 9, 2005 |
Current U.S.
Class: |
56/203 |
Current CPC
Class: |
A01D 43/063
20130101 |
Class at
Publication: |
056/203 |
International
Class: |
A01D 34/00 20060101
A01D034/00 |
Claims
1. Device in a lawn mower comprising a cutting device placed
underneath a housing that surround the sides and top of the cutting
device, a grass outlet in the housing is leading cut grass via a
discharge chute to a bag where the grass is collected, the end of
the discharge chute is provided with a door that closes the
discharge chute when the bag is removed from the lawn mower,
wherein the door is rotatable around an axis parallel to the axial
direction of the discharge chute and automatically rotated to not
cover the end of the discharge chute when the bag is secured to the
lawn mower.
2. Device according to claim 1, wherein the front end of a bag
supporting frame is secured to a docking device on the lawn
mower.
3. Device according to claim 2, wherein the door is rotated by
entering a projection on the bag supporting frame in a recess in
the docking device on the lawn mower.
4. Device according to claim 3, wherein the projection is
configured to contact and press on the door so that the door is
rotated away from the end of the discharge chute.
5. Device according to claim 1, wherein a spring biases the door to
cover the end of the discharge chute when the bag is removed from
the lawn mower.
6. A lawn mower comprising: a housing; a discharge chute coupled to
the housing; a door adapted to selectively cover an opening of the
discharge chute; and a pivot member coupled to the door such that
the door is rotatable about an axis that extends in a substantially
horizontal direction.
7. The lawn mower of claim 6, wherein the pivot member is an axle
that extends in a direction that is substantially parallel to an
axial direction of the discharge chute at the opening of the
discharge chute.
8. The lawn mower of claim 6, further comprising a docking device
coupled to the discharge chute, wherein the pivot member extends
transverse to a wall of the docking device which has the opening of
the discharge chute extending therethrough.
9. The lawn mower of claim 6, further comprising a spring member
configured to bias the door in a position in which the door
substantially covers the opening of the discharge chute.
10. The lawn mower of claim 6, further comprising a supporting
frame for the grass receptacle, the supporting frame including a
projection configured to contact a side of the door when the grass
receptacle is engaged with the lawn mower.
11. The lawn mower of claim 10, further comprising a docking device
coupled to the housing of the lawn mower, the docking device having
a recess that corresponds with the projection of the supporting
frame.
12. The lawn mower of claim 10, wherein the supporting frame
includes a handle.
13. The lawn mower of claim 10, wherein the projection is
configured to push the door to a position in which the opening of
the discharge chute is substantially uncovered by the door.
14. The lawn mower of claim 6, wherein the door not visible when a
grass receptacle is engaged with the lawn mower.
15. The lawn mower of claim 6, further comprising a grass
receptacle having an airflow indicator configured to visually
indicate to a user when the grass receptacle is full.
16. The lawn mower of claim 15, wherein the airflow indicator
includes a vented portion integral with a material cover of the
grass receptacle.
17. The lawn mower of claim 6, further comprising a handle, wherein
a height of the handle is adjustable via a quick adjust lever.
18. A lawn mower comprising: a housing; a discharge chute coupled
to the housing; a door adapted to selectively cover an opening of
the discharge chute; an airflow indicator coupled to a grass
receptacle, the airflow indicator being configured to provide a
visual indication to a user when the grass receptacle is full; and
a handle, wherein a height of the handle is adjustable.
19. The lawn mower of claim 18, wherein the handle comprises upper
and lower members, the upper and lower members being adjustable
with respect to each other via a lever assembly.
20. The lawn mower of claim 18, wherein the door is not visible, in
either an open or closed mode, when the grass receptacle is coupled
to the lawn mower.
21. A lawn mower comprising: a housing; a grass receptacle coupled
to the housing; and an airflow indicator integrally provided with
the grass receptacle, the airflow indicator configured to visually
indicate to a user when the grass receptacle is full.
22. The lawn mower of claim 21, wherein the airflow indicator
comprises a vented portion and a material flap, the material flap
being configured to substantially cover the vented portion when no
air is passing through the vented portion.
23. The lawn mower of claim 22, wherein the vented portion
comprises a plurality of apertures provided through a cover of the
grass receptacle.
24. A lawn mower comprising: a housing; and a handle comprising
upper and lower members, the upper and lower members being
pivotally adjustable with respect to each other via a quick adjust
lever assembly.
25. The lawn mower of claim 24, wherein the quick adjust lever
assembly includes at least one plate member coupled to at least one
side of the upper member, the at least one plate member comprising
two or more apertures that correspond to predetermined pivotal
positions of the upper member.
26. The lawn mower of claim 25, wherein the two or more apertures
are configured to receive a pin member extending through the lower
member of the handle to couple the upper and lower members.
27. The lawn mower of claim 26, wherein the quick adjust lever
assembly includes a lever configured to move between a first
position in which the corresponding pin member is engaged with one
of the two or more apertures and a second position in which the
corresponding pin member is disengaged with the two or more
apertures.
28. A lawn mower comprising: a housing having a discharge means for
cut grass coupled thereto; a door adapted to selectively cover an
opening of the discharge means; and means for pivoting the door in
a side-to-side manner between a position where the opening of the
discharge means is covered and a position where the opening of the
discharge means is uncovered; wherein the door is not visible when
a grass receptacle is coupled to the lawn mower.
Description
BACKGROUND OF THE INVENTION
[0001] 1) Field of the Invention
[0002] The present invention relates generally to lawn mowers, and
more particularly, to walk behind lawn mowers and devices
therefor.
[0003] 2) Description of Prior Art
[0004] Walk behind lawn mowers are available in different sizes
with different cutting widths and models. A lawn mower comprises at
least one rotating cutting blade for cutting grass or other
vegetation. The cutting blade is surrounded by a mower deck housing
in order to increase safety for the operator and to prevent
undesirable spreading of the cut grass. A combustion engine or an
electric motor can power the cutting blades. The cut grass is led
from the cutting area via an exit opening in the mower deck housing
via a channel to a grass receptacle often placed on the aft of the
mower. The grass receptacle is removed from the lawn mower when the
bag is filled with cut grass and emptied by the operator before it
is returned to the position on the aft of the mower.
BRIEF SUMMARY OF THE INVENTION
[0005] The following presents a simplified summary of the invention
in order to provide a basic understanding of some aspects of the
invention. This summary is not an extensive overview of the
invention. It is intended to neither identify key or critical
elements of the invention nor delineate the scope of the invention.
Its sole purpose is to present some concepts of the invention in a
simplified form as a prelude to the more detailed description that
is presented later.
[0006] In accordance with an aspect of the present invention a
device in a lawn mower is provided. The device includes a cutting
device placed underneath a housing that surround the sides and top
of the cutting device, a grass outlet in the housing is leading cut
grass via a discharge chute to a bag where the grass is collected,
the end of the discharge chute is provided with a door that closes
the discharge chute when the bag is removed from the lawn mower,
wherein the door is rotatable around an axis parallel to the axial
direction of the discharge chute and automatically rotated to not
cover the end of the discharge chute when the bag is secured to the
lawn mower.
[0007] In accordance with another aspect of the present invention,
a lawn mower is provided. The lawn mower includes a housing; a
discharge chute coupled to the housing; a door adapted to
selectively cover an opening of the discharge chute; and a pivot
member coupled to the door such that the door is rotatable about an
axis that extends in a substantially horizontal direction.
[0008] In accordance with yet another aspect of the present
invention, a lawn mower is provided which includes: a housing; a
discharge chute coupled to the housing; a door adapted to
selectively cover an opening of the discharge chute; an airflow
indicator coupled to a grass receptacle, the airflow indicator
being configured to provide a visual indication to a user when the
grass receptacle is full; and a handle, wherein a height of the
handle is adjustable.
[0009] In accordance with yet another aspect of the present
invention, a lawn mower is provided which includes: a housing; a
grass receptacle coupled to the housing; and an airflow indicator
integrally provided with the grass receptacle, the airflow
indicator configured to visually indicate to a user when the grass
receptacle is full.
[0010] In accordance with yet another aspect of the present
invention, a lawn mower is provided which includes: a housing; and
a handle comprising upper and lower members, the upper and lower
members being pivotally adjustable with respect to each other via a
quick adjust lever assembly.
[0011] In accordance with yet another aspect of the present
invention, a lawn mower is provided. The lawn mower includes a
housing having a discharge means for cut grass coupled thereto; a
door adapted to selectively cover an opening of the discharge
means; and means for pivoting the door in a side-to-side manner
between a position where the opening of the discharge means is
covered and a position where the opening of the discharge means is
uncovered; wherein the door is not visible when a grass receptacle
is coupled to the lawn mower.
[0012] The following description and the annexed drawings set forth
in detail certain illustrative aspects of the invention. These
aspects are indicative, however, of but a few of the various ways
in which the principles of the invention may be employed and the
present invention is intended to include all such aspects and their
equivalents. Other objects, advantages and novel features of the
invention will become apparent from the following detailed
description of the invention when considered in conjunction with
the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The foregoing and other features and advantages of the
present invention will become apparent to those skilled in the art
to which the present invention relates upon reading the following
description with reference to the accompanying drawings.
[0014] FIG. 1 illustrates a perspective view of a walk behind lawn
mower in accordance with an aspect of the present invention.
[0015] FIG. 2 illustrates a discharge door of a lawn mower in a
closed position in accordance with an aspect of the present
invention.
[0016] FIG. 3 illustrates a discharge door of a lawn mower in an
open position in accordance with an aspect of the present
invention.
[0017] FIG. 4 illustrates a perspective view of a discharge device
of a lawn mower coupled to a supporting frame of a grass receptacle
in accordance with an aspect of the present invention.
[0018] FIG. 5 illustrates a perspective view of a grass receptacle
for a lawn mower in accordance with an aspect of the present
invention.
[0019] FIG. 6 is an enlarged view of the areas encircled and
labeled 6 within FIG. 5, and illustrates a material flap of a grass
receptacle for a lawn mower in accordance with an aspect of the
present invention.
[0020] FIG. 7 illustrates a perspective view of a handle for a lawn
mower in accordance with an aspect of the present invention.
[0021] FIG. 8 illustrates a perspective view of a lever of a handle
for a lawn mower in accordance with an aspect of the present
invention.
DETAILED DESCRIPTION OF AN EXAMPLE EMBODIMENT
[0022] The present invention relates to a walk behind lawn mower
and devices therefor. The present invention will now be described
with reference to the drawings, wherein like reference numerals are
used to refer to like elements throughout. It is to be appreciated
that the various drawings are not necessarily drawn to scale from
one figure to another nor inside a given figure, and in particular
that the size of the components are arbitrarily drawn for
facilitating the understanding of the drawings. In the following
description, for purposes of explanation, numerous specific details
are set forth in order to provide a thorough understanding of the
present invention. It may be evident, however, that the present
invention can be practiced without these specific details.
[0023] Referring initially to FIG. 1, a lawn mower 10 is depicted
in accordance with an aspect of the present invention. As shown,
the lawn mower 10 can be a walk-behind self-propelled working
machine. However, it is to be appreciated that the invention may be
used within various other types of machines. The lawn mower 10
comprises a housing 15 with left and right front wheels 20 provided
at a front portion of the housing 15 and left and right rear wheels
22 provided at a rear portion of the housing 15. The lawn mower 10
also includes an engine 25 provided at a top portion of the housing
for powering the lawn mower 10, a grass receptacle 30 and an
operating handle 35 extending rearward from the housing 15. A lower
portion of the housing 15 opens downward and is adapted to surround
the sides and top of a cutting blade (not shown) that is rotated by
the engine 25 via an output shaft (not shown). The housing 15
includes a discharge chute 40 that can be materially integral to
the housing 15 or a separate component coupled thereto. The
discharge chute 40 is adapted to lead cut grass to the grass
receptacle 30 placed on an aft portion of the lawn mower 10. The
grass receptacle 30 is coupled to the lawn mower 10 via a
supporting frame 45. The supporting frame 45 is attached to a
docking device 50 on the lawn mower 10. Accordingly, grass cut by
the cutting blade is received in the grass receptacle 30 through
the discharge chute 40.
[0024] Turning now to FIGS. 2-4, the docking device 50 and the
engagement of the docking device 50 to the supporting frame 45 is
illustrated in greater detail in accordance with an aspect of the
present invention. A material cover 80 of the grass receptacle 30
is removed from the illustrations of FIGS. 2-4 in order to more
clearly see the components of the docking device 50 and the
supporting frame 45. However, during use, the material cover 80 is
provided over a receptacle frame 52. Such an arrangement is shown
in FIG. 4. The docking device 50 is shaped with a substantially
flat section 55 that corresponds with a front side of the grass
receptacle 30. The discharge chute 40 for the cut grass terminates
in an opening 60 in the flat section 55 of the docking device 50. A
door 65 that is pivotable or rotatable in a side-to-side manner can
selectively cover the opening 60. The door 65 is coupled to and
adapted to pivot or rotate about a substantially horizontal axis.
More specifically, the door 65 rotates about an axle 70 that is
substantially parallel to the longitudinal direction of the
discharge chute end portion that forms the opening 60 in the flat
section 55. The axle 70 extends substantially transverse from the
flat section 55. A spring 75 is coupled between the docking device
50 and the door 65 to bias the door 65 into a closed position. The
closed position of the door 65 is shown in FIG. 2. Thus, the door
65 is closed automatically when the grass receptacle 30 is released
from docking device 50.
[0025] During a bagging operation of the lawn mower 10, the grass
receptacle 30 is coupled to the supporting frame 45. The cut grass
is collected in the grass receptacle 30 from the discharge chute
40. When the grass receptacle 30 is full, the bag 30 can be easily
released from the docking device 50 and emptied. The bag 30 is
released by pulling on a portion of the supporting frame 45 and
unlatching a quick release fastener 77 coupled to the docking
device 50. It is to be appreciated that any suitable fastener can
be provided on any suitable structure to couple the supporting
frame 45 or the receptacle frame 52 to the docking device 50.
Likewise, the grass receptacle 30 can be easily snapped into
engagement with the docking device 50 via the fastener 77 and the
engagement of the corresponding components between the grass
receptacle 30 and the docking device 50. The front end of the
supporting frame 45 is provided with a handle 85 on the topside of
a bar 90 that extends across a top front end portion of the grass
receptacle 30. The supporting frame 45 also includes a support
member 100 that extends along a longitudinal direction of the grass
receptacle 30 and a connector bar 105 that is adapted to engage a
rod 110, which is part of the receptacle frame 52 of the grass
receptacle 30. This coupling can be seen more clearly in FIG. 4.
The connector bar 105 and rod 110 coupling facilitate easy removal
of the grass receptacle 30 from the supporting frame 45 in the
event that the cover 80 of the bag 30 needs replaced or the
like.
[0026] The bar 90 of the supporting frame 45 includes a downwardly
extending projection 95 that is adapted to extend through a recess
or groove 97 provided through a top portion of the docking device
50. Prior to engagement of the grass receptacle 30 with the docking
device 50, the door 65 is biased by the spring 75 into a closed
position, as illustrated in FIG. 2. In this position, the grass cut
by the cutting blade is not able to pass through the opening 60 of
the docking device 50. Accordingly, the lawn mower 10 operates in a
mulching mode, provided that the cutting blade is adapted for
mulching. To change the operation of the lawn mower 10 from the
mulching mode, or a non-bagging mode, to the bagging mode, the
grass receptacle 30 is secured to the docking device 50 by sliding
the grass receptacle 30 and the supporting frame 45 from a position
above the docking device 50, as shown in FIG. 2, downward in a
direction substantially parallel to the flat section 55 and toward
the top portion of the docking device 50. The downwardly extending
projection 95 enters the recess or groove 97 of the docking device
50 until the bar 90 of the supporting frame 45 contacts the top
portion of the docking device 50, as illustrated in FIG. 3. The
configuration of the downwardly extending projection 95 and the
corresponding recess 97, including the length of the projection 95
and the position of the recess 97 is selected so that the
projection 95 can engage a side of the door 65 such that the door
65 is forced to pivot or rotate in a side-to-side manner about the
axle 70 and finally to a position where the opening 60 is
substantially uncovered, thereby allowing cut grass to pass
therethrough. The pivoting or rotating of the door 65 increases
tension on the spring 77 such that when the downwardly extending
projection 95 is lifted out of engagement with the door 65, the
door 65 pivots or rotates back to the closed position.
[0027] The door 65, as shown in FIGS. 1-4 is not visible when the
collection bag 30 is coupled to the lawn mower 10.
[0028] Turning now to FIGS. 5 and 6, the grass receptacle 30 of the
lawn mower 10 is illustrated in further detail. As discussed above,
the grass receptacle 30 comprises a receptacle frame 52
substantially covered by a material 80. The material 80 is
preferably flexible and can be made from any conventional material
used for lawn mower bags. The material is preferable porous to
permit air flow. The grass receptacle 30 includes an open end
portion 115 for receiving cut grass from the discharge chute 40.
The grass receptacle 30 also includes an airflow indicator 120. As
illustrated in greater detail in FIG. 6, the airflow indicator 120
comprises a vented portion 125 provided through the material 80 of
the grass receptacle 30. The vented portion 125 includes one or
more apertures of a size large enough for air to pass through and
small enough such that grass and other debris within the receptacle
cannot pass through. The vented portion 125 can comprise an array
of apertures provided through the material 80. Alternatively, the
grass receptacle 30 can include a meshed insert of any suitable
material as the vented portion 125. A material flap 130 is adapted
to substantially cover the vented portion 125 when no air is
passing through the vented portion 125. When air is passing through
the vented portion 125, the material flap 130 is opened, as
illustrated in FIGS. 5 and 6. Thus, airflow indicator 120 operates
to visually indicate to a user when the grass receptacle 30 is
full. When the grass receptacle 30 is not full, air is able to
circulate within the grass receptacle 30 and out of the vented
portion 125, thereby opening the material flap 130. On the other
hand, when the grass receptacle 30 is full, air is not able to pass
through the vented portion 125, and thus the material flap 130 is
in a relaxed state and lies substantially flat against the
receptacle 30.
[0029] Turning now to FIGS. 7 and 8, the handle 35 of the lawn
mower is depicted in greater detail in accordance with an aspect of
the present invention. The handle 35 includes an upper member 135
and a lower member 140, wherein the upper member 135 is pivotally
adjustable with respect to the lower member 140, which in turn,
adjusts an overall height of the handle 35 when coupled to the lawn
mower body. The upper and lower members 135, 140 are adjusted via a
pair of quick adjust lever 145 and bracket 150 assemblies. Each of
the brackets 150 includes two or more, preferably three, apertures
155 provided therethrough. The apertures 155 are adapted to receive
a corresponding pin 160 extending through each of the legs of the
lower member 140. The angle of the upper member 135 with respect to
the lower member 140 is dependent upon which of the apertures 155
of the bracket 150 through which the pin 160 extends.
[0030] End portions of legs of the upper member 135 are adapted to
couple to a mating portion of the corresponding brackets 150. The
leg end portions of the upper member 135 and the corresponding
brackets 150 are coupled between corresponding sides of the lower
member 140 and corresponding quick adjust levers 145 via a pair of
fasteners 165. The engagement between the quick adjust lever 145
and the corresponding fastener 165 is such that when the quick
adjust lever 145 is in a first position 170, the upper member 135
and lower member 140 are biased together and the pin 160 is
received through and engaged with a selected aperture 155. When the
quick adjust lever 145 is in a second position 175, the lever 145
acts to bias the end portion of the upper member 135 away from the
lower member 140 thereby disengaging the pin 160 from the
previously selected aperture 155. In this position, the upper
member 135 can be pivoted to a new position and the pin 160 can be
aligned with a different selected aperture 155 to correspond with
the new position. The quick adjust lever 145 is then moved back to
the first position 170 to engage the pin 160 with the different
selected aperture 155.
[0031] Although the present invention has been described with
respect to a walk-behind mower, it is to be appreciated that
similar configurations described herein can be adapted to be used
with a riding mower, a towed mower, a stand-upon mower, or the
like.
[0032] What has been described above includes some exemplary
implementations of the present invention. It is, of course, not
possible to describe every conceivable combination of components or
methodologies for purposes of describing the present invention, but
one of ordinary skill in the art will recognize that many further
combinations and permutations of the present invention are
possible. Accordingly, the present invention is intended to embrace
all such alterations, modifications and variations that fall within
the spirit and scope of the appended claims.
* * * * *