SE546143C2

SE546143C2 - Compact collection bag storage

Info

Publication number: SE546143C2
Application number: SE2250360A
Authority: SE
Inventors: Panajottis Kelekidis
Original assignee: Husqvarna Ab
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2024-06-11
Also published as: WO2023180803A1; SE2250360A1

Abstract

A walk-behind mower (100) includes a working chassis (120) with a front end stowing element (128) and a motor housing stowing element (125). The walk-behind mower (100) also includes a collection bag assembly (140) comprising a collection bag frame (155) and a collection bag (142). The collection bag frame (155) includes a lower support stowing element (148) and an upper support stowing element (150). In an operating configuration, the collection bag assembly (140) is removably attached to a back end (122) of the working chassis (12) to catch clippings. In a stowed configuration, the collection bag frame (155) of the collection bag assembly (140) is removably attached to the working chassis (120) by an engagement of the lower support stowing element (148) with the front end stowing element (128) and an engagement of the upper support stowing element (150) with the motor housing stowing element (125).

Description

TECHNICAL FIELD [0001] EXample embodiments generally relate to lawn and garden power equipment and, more particularly, relate to walk-behind mowers with a collection bag.

BACKGROUND

[0002] Walk-behind power mowers have become key components in most lawn and garden equipment collections for commercial and residential use. Such walk-behind mowers offer the fleXibility to be used for both larger and smaller lawns. ln some instances, the small size and weight of a walk-behind mower, relative to a ride-on mower, allows for increased maneuverability and access to more constrained areas that would not be accessible to their ride- on counterparts.

[0003] However, like all lawn and garden equipment, walk-behind mowers need to be stowed when not in use. While the overall size of a walk-behind mower may be small relative to a ride-on mower, a walk-behind mower incudes elements that eXtend away from the mower chassis, such as the push handle and the collection bag, that increase the volume that is taken up by a walk-behind mower in a shed, garage, or trailer. Much of the volume that is taken up by a walk-behind mower is empty space (e. g., the space associated with the handle and the collection bag). As a result, a walk-behind mower can take up a relatively large amount of space if stowed in the operating configuration. While some solutions for reducing the storage space taken up by a walk-behind mower have been developed, e. g., folding push handles, there continues to be a need for improved storage technologies that not only reduce the storage volume, but also maintain removable components in a secured manner that facilitates convenient reconfiguration from a stowed state to an operating state.

BRIEF SUMMARY OF SOME EXAMPLES [0004] According to some example embodiments, a walk-behind mower is provided that may comprise a working chassis comprising a front end stowing element disposed at a front end of the working chassis and a motor housing comprising a motor housing stowing element. The walk-behind mower may also comprise a collection bag assembly comprising a collection bag frame and a collection bag coupled to and supported by the collection bag frame. The collection bag frame may comprise a lower support stowing element and an upper support stowing element.

In an operating configuration for the walk-behind mower, the collection bag assembly may be removably attached to a back end of the working chassis to catch clippings. In a stowed configuration for the walk-behind mower, the collection bag frame of the collection bag assembly may be removably attached to the working chassis by an engagement of the lower support stowing element with the front end stowing element and an engagement of the upper support stowing element with the motor housing stowing element.

[0005] According to some example embodiments, another example embodiment of a walk- behind mower is provided. The walk-behind mower may comprise a Working chassis comprising a front end stowing element disposed at a front end of the working chassis and a motor housing comprising a motor housing stowing element. The walk-behind mower may further comprise a collection bag frame comprising a lower support stowing element on a cantilever assembly and an upper support stowing element on an upper bag support. In an operating configuration for the walk-behind mower, the collection bag frame may be removably attached to a back end of the working chassis to catch clippings. In a stowed configuration for the walk-behind mower, the collection bag frame may be removably attached to the working chassis by an engagement of the lower support stowing element with the front end stowing element and an engagement of the upper support stowing element with the motor housing stowing element. Further, a coupling of the cantilever assembly with the upper bag support exhibits an elasticity such that an elastic force urges the lower support stowing element towards the front end stowing element and urges the upper support stowing element towards the motor housing stowing element to securely attach the collection bag assembly to the working chassis.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING(S) [0006] Having thus described some example embodiments in general terms, reference will now be made to the accompanying drawings, which are not necessarily drawn to scale, and wherein: [0007] FIG. l illustrates side View of a walk-behind mower in an operating configuration according to some example embodiments;

[0008] FIG. 2 illustrates a perspective top view of a collection bag frame according to some example embodiments;

[0009] FIG. 3 illustrates a perspective bottom view of a collection bag frame according to some example embodiments;

[0010] FIG. 4 illustrates a perspective top view of another collection bag frame according to some example embodiments;

[0011] FIG. 5 illustrates a perspective back view of a Working chassis of a walk-behind mower according to some example embodiments;

[0012] FIG. 6 illustrates a perspective side view of a working chassis of a walk-behind mower according to some example embodiments;

[0013] FIG. 7 illustrates a zoomed perspective front view of a working chassis of a walk- behind mower according to some example embodiments;

[0014] FIG. 8 illustrates a cross-section side view of a collection bag frame in a stowed configuration engagement with a dotted silhouette of a working chassis according to some example embodiments;

[0015] FIG. 9 illustrates a perspective side view of a retracted push handle according to some example embodiments; and

[0016] FIG. 10 illustrates a walk-behind mower is an upright stowed configuration according to some example embodiments.

DETAILED DESCRIPTION

[0017] Some example embodiments now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all example embodiments are shown. Indeed, the examples described and pictured herein should not be construed as being limiting as to the scope, applicability or configuration of the present disclosure. Rather, these example embodiments are provided so that this disclosure will satisfy applicable legal requirements. Like reference numerals refer to like elements throughout. Furthermore, as used herein, the term “or” is to be interpreted as a logical operator that results in true whenever one or more of its operands are true. As used herein, operable coupling should be understood to relate to direct or indirect connection that, in either case, enables functional interconnection of components that are operably coupled to each other.

[0018] According to some example embodiments, a walk-behind mower is provided that includes a collection bag assembly that is structure for both an operating configuration and a stowed configuration. ln the operating configuration, the collection bag assembly may be removably attached to a back end of a Working chassis of the walk-behind mower to catch clippings (e. g., grass clippings). ln a stowed configuration, the collection bag assembly may be removably attached to the Working chassis in a compact and secured manner to facilitate storage of the walk-behind mower. ln this regard, the collection bag assembly may include a collection bag frame that is structured to be removably attached between securing elements on a motor housing and a front end of the working chassis. The collection bag frame may provide a support structure for a collection bag when in the operatin g configuration, and facilitate compact storage of the collection bag when in the stowed configuration. ln this regard, because the collection bag is empty when stowed, the collection bag can be collapsed and attached on top of the working chassis. The motor housing may be positioned relative to the collection bag assembly such that the motor housing is within the volume that collection bag would be assume if the bag were fully expanded (as is the case in the operating configuration). Accordingly, by collapsing the collection bag and securing the collection bag assembly onto the working chassis, the space needed to store the walk-behind mower is substantially reduced.

[0019] Accordingly, the collection bag assembly and the working chassis may include corresponding stowing elements that operate to removably attach the collection bag assembly to the working chassis in a secure manner. ln this regard, according to some example embodiments, members of the collection bag frame may be formed of material (e.g., metal, such as steel) that has a degree of elasticity. This elasticity property may operate to generate a securing force that holds the collection bag assembly between the motor housing and the front end of the working chassis, when in the stowed configuration.

[0020] Having generally described some aspects of example embodiments, reference will now be made to FIG. 1, which illustrates a side view of a walk-behind mower 100 in an operating configuration according to some example embodiments. The walk-behind mower 100 may be comprised of a working chassis 120, a collection bag assembly 140, and push handle 160. ln the operating configuration according to FIG. 1, the push handle 160 is extended and rotated, via the handle rotating assembly 161, into a position that permits a user to walk behind and push the mower 100. Additionally, collection bag assembly 140 is removably attached to the working chassis 120 at a back end 122 to catch clippings as the walk-behind mower 100 is operated. The collection bag assembly 140 may comprise a collection bag frame 155 and a collection bag 142 that is supported by the collection bag frame

[0021] The working chassis 120 may have a front end 121 and a back end 122. The front end 121 may be in a leading position as the user pushes in the forward direction as indicated by forward directed arrow 103. The back end 122 may be opposite the front end 121 and may be the end of the working chassis 120 that is closest to the user when the walk-behind mower 100 is being operated. According to some example embodiments, the working chassis 120 may be configured to throw clippings toward the back end 122 when in operation. As such, if the collection bag assembly 140 is attached in the operating configuration, then the clippings can be collected within the collection bag

[0022] The working chassis 120 may comprise a deck 123, a motor housing 124, and wheels 127. The deck 123 may be a lower portion of the working chassis 120, which can house the cutting blade or other cutting implement. The motor housing 124 may be positioned above the deck 123, and may be the external housing for a gas-powered or electric motor. According to some example embodiments, the motor housing 124 may be positioned above the deck 123 and the cutting blade to permit a straight drive shaft to extend down from the motor to drive the cutting blade, without the need for gearing or belts to transfer the rotational energy of the motor. According to some example embodiments, the motor housing 124 may also house a rechargeable battery that is configured to power the motor and any other electronics of the walk-behind mower

[0023] Additionally, the walk-behind mower 100 may comprise a plurality of wheels 127. According to some example embodiments, the walk-behind mower 100 may include four wheels 127, which include two front wheels and two rear wheels. The wheels 127 may be configured to freely rotate in response to a user”s pushing force, or the wheels 127 may be driven by a propulsion system that rotationally drives the wheels 127 to lessen the pushing force supplied by the user.

[0024] As mentioned above, the working chassis 120 may include attachment or securing features that facilitate removable attachment of the collection bag assembly 140 to the working chassis 120 in both the operating configuration and in the stowed configuration. For the stowed configuration, the motor housing 124 may include a motor housing stowing element 125 that is configured to couple with a corresponding feature on the collection bag assembly 140. The motor housing stowing element 125 may be disposed on the motor housing 124. According to some example embodiments, the motor housing stowing element 125 may be located at a back or rear portion of the motor housing 124 and may face rearward (i.e., toward the back end 122 of the working chassis 120). Additionally, a front end stowing element 128 may be included on the working chassis 120 for use when the walk-behind mower 100 is in the stowed configuration. The front end stowing element 128 may be positioned at the front end 121 of the working chassis 120, for example, on a front bumper or front surface that extends forward beyond the forward extension of the front wheels

[0025] Specific features of the working chassis 120 that function to secure the collection bag assembly 140 in the operating configuration will be described further below. However, the collection bag assembly 140 is configured to be removably attached to the back end 122 to extend behind the rear wheels 127 and beneath the push handle 160, when the push handle 160 is in the operating configuration. Additionally, according to some example embodiments, the working chassis 120 may comprise a bag ﬂap 129 that may be spring-biased into a closed position when the collection bag assembly 140 is not attached the back end 122, but is lifted and rests on top of the collection bag assembly 140 when the collection bag assembly 140 is attached to the back end 122 in the operating configuration. The collection bag assembly 140 may be attached to the working chassis 120 such that an upper bag support 141 of a collection bag frame 155 extends rearward and the collection bag 142 is suspended from, and is disposed beneath, the upper bag support 141. According to some example embodiments, a cantilever structure may be employed to support the upper bag support 141. According to some example embodiments, the collection bag assembly 140 may include a bag handle 143 that is positioned to assist the user with attaching and removing the collection bag assembly 140 from the back end 122, particularly when the collection bag 142 is full of clippings.

[0026] The collection bag 142 may be made a durable cloth (e. g., canvas) or other durable, but flexible, material. According to some example embodiments, the material of the collection bag 142 may be breathable material that permits some airflow through the collection bag 142, but retains yard clippings that are cut by the cutting blade and thrown into the collection bag 142. ln this regard, the material of the collection bag 142 may be a mesh such as a polyester or nylon mesh. According to some example embodiments, the surface of the collection bag material may have a texture that has a relatively high coefficient of friction. As such, When the collection bag material is compressed between two surfaces, the collection bag material may tend to be maintained in place due to frictional forces, rather than slip.

[0027] Now referring to FIGs. 2 and 3, an example embodiment of a collection bag frame 155 is shown. FIG. 2 provides a perspective side view of the collection bag frame 155, while FIG. 3 provides a perspective bottom view of the collection bag frame 155. The collection bag 142 is not shown in FIGs. 2 and 3 to permit better visibility of the specific features of the collection bag frame

[0028] The collection bag frame 155 may be comprised of an upper bag support 141 and a cantilever assembly 145. According to some example embodiments, the upper bag support 141 may be rigid structure that is configured to extend in a generally horizontal direction when the collection bag frame 155 is coupled to the working chassis 120. The upper bag support 141 may function, as mentioned above, to support the collection bag 142, which may be affixed to the upper bag support 141 such that the collection bag 142 hangs below the upper bag support 141. As best seen in FIG. 3, upper bag support 141, and more specifically the shell 157, may include clips 159 that are used to secure the collection bag 142 to the shell 157 and the collection bag frame 155. In this regard, the upper bag support 141 may comprise a rigid shell 157, which may be formed of a plastic, such as a polycarbonate plastic. Accordingly, the shell 157 may be concave with sidewalls 158 that extend down from an upper surface.

[0029] The upper bag support 141 may include a bag handle 143 that may be located along a longitudinal bisecting plane of the collection bag frame 155 and the shell 157 that passes through longitudinal axis 104. According to some example embodiments, the collection bag frame 155 may be bilaterally symmetric about this plane, which may intersect with the bag handle 143, the upper support stowing element 150, and the lower support protrusion 154, as further described herein. Placement of the bag handle 143 along this central longitudinal axis may naturally balance the weight of the clippings in the collection bag 142 (not shown in FIG. 2). Placement of the handle along the longitudinal axis may also facilitate attachment of the collection bag assembly 140 in the stowed configuration, as further described below.

[0030] The upper bag support 141 may include an upper support stowing element 150. The upper support stowing element 150 may be located at the rear of the shell 157 (opposite the cantilever assembly 145). According to some example embodiments, the upper support stowing element 150 may be disposed on the same longitudinal axis 104 (i.e., intersecting With the associated bisecting plane). According to some example embodiments, the upper support stoWing element 150 may be disposed on the interior surface of the shell 157. ln this regard, according to some example embodiments, the upper support stoWing element 150 may be formed as an upper support lip 156. The lip 156 may be embodied by or comprised by the interior surface of the sideWalls 158. According to some example embodiments, the upper support lip 156 may have a different shape than the other sideWalls 158. For example, the upper support lip 156 may include a recess, protrusion, curvature, or the like to facilitate a secure engagement With the Working chassis 120, When in the stoWed configuration. Additionally, although not shown, the material of the collection bag 142 may be disposed on or adj acent to the upper support stoWing element 150 and, as such, may facilitate a secure engagement (e. g., via the frictional aspects described above) of the upper support stoWing element 150 With the Working chassis

[0031] The upper bag support 141 may also include chassis securing elements 149 disposed Within chassis securing portions 144. ln this regard, the upper bag support 141 may include features that are complementary to features on the Working chassis 120 to removably attach the collection bag frame 155 to the back end 122 of the Working chassis 120, When in the operating configuration. The chassis securing portions 144 may take the form of cutouts that narroW the shell 157 to fit between the handle rotating assembly 161 of the Working chassis 120. Additionally, the chassis securing elements 149 may, according to some example embodiments, be recesses on the underside of the shell 157 that engage With respective bag assembly securing elements 130 (see FlGs. 5 and 6) to secure the collection bag assembly 140 to the back end 122 of the Working chassis 120. ln this regard, the bag assembly securing elements 130 may be posts that extend upWards to be received Within the recesses of the chassis securing elements 149 to hold the collection bag assembly 140 onto the Working chassis

[0032] The upper bag support 141, according to some example embodiments, may also include a means for coupling the upper bag support 141 to the cantilever assembly 145. ln this regard, the upper bag support 141 may include upper support arms 151 that are attached to the shell 157. As best seen in FIG. 3, the upper support arms 151 may be positioned on the interior of the shell 157 on opposite sides of the shell 157. According to some example embodiments, the upper support arms 151 may be metal (e. g., steel) bars or rods that are affixed to the shellby fasteners 152. The upper support arms 151 may extend into the Shell 157. The upper support arrns 151 may be affixed to the shell 157 by a plurality of fasteners 152, to provide a rigid connection with the shell

[0033] The upper support arms 151 may be integrated with or coupled to transitional support bends 153 that operably couple the upper bag support 141 with the cantilever assembly 145. The support bend 153 may be bends in a steel rod or bar that is used to form the cantilever assembly 145. According to some example embodiments, the support bends 153 may be, for example, right angle or ninety-degree bends to transition from the generally horizontal extension of the upper bag support 141 to a generally downward vertical extension of the cantilever assembly 145. Also, as discussed in further detail below, the support bends 153 may provide some degree of elasticity to the collection bag frame 155, which can be used to generate an elastic force that tends to maintain the collection bag assembly 140 in the stowed configuration.

[0034] The cantilever assembly 145 may include the lower support arms 146. Each lower support arm 146 may extend vertically downward from a respective support bend 153 that is connected to upper support arms 151. While according to some example embodiments, the relationship between the lower support arms 146 and the upper support arms 151 may be at or near a right angle, it is contemplated that a non-right angle relationship may be used. ln particular, a slightly acute angle (e.g., greater than ei ghty-five degrees) between the upper bag support 141 and the cantilever assembly 145 may result in a higher elastic force to better secure the collection bag assembly 140 in the stowed configuration.

[0035] When the collection bag assembly 140 is in the operating configuration, the lower support arms 146 of the cantilever assembly 145 may be in engagement with the back end 122 of the working chassis 120. This engagement may be secured by clips or the like, or the weight of the upper bag support 141 may be sufficient to securely urge the cantilever assembly 145 against the back end 122 of the working chassis 120. According to some example embodiments, the maj ority of the weight of the collection bag frame 155 may be borne by the bag assembly securing elements 130 on the working chassis 120. Based on the positioning of the bag assembly securing elements 130 adj acent to and above the wheels 127 (FlGs. 5 and 6), the maj ority of weight of the upper bag support 141 (and the collection bag 142, when attached) will be transferred to the wheels 127. As such, cantilever assembly 145 may be exposed to a force created by a moment about the support bends 153 due to the weight of upper bag support

[0036] The cantilever assembly 145 may also include a lower support stowing element 148 that may support the cantilever function when in the operating configuration, and facilitate removable attachment of the collection bag assembly 140 to the working chassis 120, when in the stowed configuration. ln this regard, the lower support stowing element 148 may include a lower support cross arm 147. The lower support cross arm 147 may be integrated with or coupled to the lower support arms 146. As such, the lower support cross arm 147 may be coupled between the lower support arms 146. According to some example embodiments, the lower support cross arm 147 may be disposed at a right angle to the lower support arms 146. [0037] ln the operating configuration, the lower support cross arm 147 may also be contact with the back end 122 of the working chassis 120 to support the cantilever function of the cantilever assembly 145. Accordingly, the lower support cross arm 147 may be secured by clips or the like to the back end 122, or the weight of the upper bag support 141 may be sufficient to securely urge the lower support cross arm 147 against the back end 122 of the working chassis

[0038] As further described below, the lower support cross arm 147 may be attached to the working chassis 120 in the stowed configuration to maintain the collection bag assembly 140 in the stowed configuration. However, to improve engagement in the stowed configuration, the lower support stowing element 148 may also include a lower support protrusion 154. According to some example embodiments, the lower support protrusion 154 may extend from the lower support cross arm 147 in a generally horizontal and rearward direction. According to some example embodiments, the lower support protrusion 154 may be a C or U-shaped welded rod that extends from the lower support cross arm 147. Alternatively, according to some example embodiments, the lower support protrusion 154 may be a protruding bend in the lower support cross arm 147 that extends rearward. The lower support protrusion 154 may engage with a corresponding feature on the working chassis 120 that is configured to securely interface with the lower support protrusion 154 to maintain the collection bag assembly 140 in the stowed configuration.

[0039] Referring now to FIG. 4, an alternative embodiment of a collection bag frame 255 is shown. The collection bag frame 255 does not include a shell 157. Rather, the collection bag frame 255 may be formed of bars or rods that are welded and/or bent into the structure of a collection bag frame as described herein. ln this regard, the upper bag support 241 may be comprised of parallel bars 251 from which a collection bag 142 may be hung. Chassis securing elements 249 may be formed as U-shaped extensions from the exterior sides of the bars 251. The chassis securing elements 249, for example, may have interior openings within which the bag assembly securing elements 130 may be received to support the upper bag support 241. Additionally, the upper bag support 241 may include an upper support cross bar 252 that extends between the bars 251 at a rearward end of the collection bag frame[0040] Affixed to the upper support cross bar 252, an upper support stowing element 250 may be disposed. ln this regard, the upper support stowing element 250 may include a protrusion 256 that extends downward with an arc to facilitate engagement with a corresponding feature on, for example, the motor housing 124 of the walk-behind mower

[0041] Similar to the collection bag frame 155, the collection bag frame 255 may also include support bends 253 that transition the upper bag support 241 to the cantilever assembly 245. Also similar to the collection bag frame 155, the cantilever assembly 245 may include two lower support arms 246 that extend vertically downward relative to the horizontal extension of the upper bag support 241. The lower support arms 246 may function to provide a cantilever support to the upper bag support 241. The cantilever assembly 245 may also comprise a lower support stowing element 248. The lower support stowing element 248 may include a lower support cross arm 247 that is coupled between the lower support arms 246 and supports both the cantilever function operating configuration and engagement in the stowed configuration. Further, the lower support stowing element 248 may also include a lower support engagement feature 254. ln this regard, rather than a protrusion, the lower support engaging feature 254 may be hoop that forms an opening. According to some example embodiments, the opening may be configured, for example, to receive a corresponding protrusion disposed on the front end of a walk-behind mower to secure the collection bag frame 155 in the stowed configuration.

[0042] Now referring to FlGs. 5 to 7, various views of the working chassis 120 of the walk- behind mower 100 are shown. lnitially, it is noted that the bag assembly securing elements 130 are shown are the back end 122 of the working chassis 120. As mentioned earlier, the bag assembly securing elements 130 are formed as upward extending posts that are configured to be received into chassis securing elements 149 formed as corresponding recesses for supporting the collection bag assembly 140 (or the collection bag frame 255). Also, in the operating configuration, the cantilever assembly 145 may be in contact with the back end 122 of theworking chassis 120. However, as shown in FIG. 5, the bag ﬂap 129 is in the closed position, and therefore the back end surfaces that the cantilever assembly 145 engages with are disposed under the bag ﬂap 129. To install the collection bag assembly 140, the bag ﬂap 129 may be pivoted into an upright position, and then the collection bag assembly 140 may be installed on the bag assembly securing elements 130. Once positioned accordingly, the spring-biased bag ﬂap 129 may be released, and, due to the bias, the bag ﬂap 129 may come to rest on top of the collection bag assembly 140 as shown in FIG.

[0043] Additionally, the motor housing stowing element 125 is shown in FIGs. 5 and 6. As can be more clearly seen in FIG. 5, the motor housing stowing element 125 may take the form of a motor housing protrusion 133 that extends rearward toward the back end 122 of the working chassis 120. The extension of the motor housing protrusion 133 may create a void 126 below the motor housing protrusion 133 and between the motor housing protrusion 133 and the deck 123. While the motor housing protrusion 133 extends rearward, it does not extend to or beyond the back end 122 of the working chassis 120, according to some example embodiments. Additionally, as best seen in FIG. 5, the motor housing protrusion 133 may comprise a motor housing handle 134. In this regard, the motor housing handle 134 may have a dual function as a handle for lifting the walk-behind mower 100 in the operating configuration, and for securely engaging with the collection bag frame 155, when in the stowed configuration.

[0044] Additionally, an example embodiment of the front end stowing element 128 can be best seen in the zoomed front view of FIG. 7. In this regard, according to some example embodiments, the front end stowing element 128 may comprise a cross arm receiving groove 131 that is configured to receive the lower support cross arm 147 of the collection bag frame 155. In this regard, the lower support cross arm 147 may fit within the recess of the cross arm receiving groove 131 to securely maintain the lower support cross arm 147 in the recess. In this regard, according to some example embodiments, the cross arm receiving groove 131 may have a length that is the same as the length of the lower support cross arm

[0045] The front end stowing element 128 may also comprise a protrusion receiving slot 132. The protrusion receiving slot 132 may be disposed on the front end 121 of the working chassis 120, and, for example, in a central location on the front end 121 of the working chassis 120. According to some example embodiments, the protrusion receiving slot 132 may be disposed within the cross arm receiving groove 131. However, according to some example embodiments,the front end stowing element 128 may only include a protrusion receiving slot 132 (i.e., without a cross arm receiving groove 131). In example embodiments that include a cross arm receiving groove 131 that is co-located with a protrusion receiving slot 132, the protrusion receiving slot 132 may have a depth that is greater than the depth of the cross arm receiving groove 131. [0046] Now referring to FIG. 8, a cross-section view of the collection bag frame 155, with a dotted silhouette of the working chassis 120, is shown where the collection bag frame 155 is in the stowed configuration. In this regard, with the collection bag frame 155 in the stowed configuration, the collection bag frame 155 of the collection bag assembly 140 is removably attached to the working chassis 120 by an engagement of the lower support stowing element 148 with the front end stowing element 128 and an engagement of the upper support stowing element 150 with the motor housing stowing element

[0047] To install the collection bag frame 155 in the stowed configuration as shown in FIG. 8, the user may, for example, engage the lower support stowing element 148 with the front end stowing element 128. In this regard, for example, the lower support cross arm 147 may be inserted into the cross arm receiving groove 131. Additionally, the lower support protrusion 154 may be aligned with, and inserted into, the protrusion receiving slot 132. The user may then, for example while grasping the bag handle 143, engage the upper support stowing element 150 with the motor housing stowing element 125. To do so, the user may pull the collection bag frame 155 rearward such that the upper support lip 156 passes over and engages with the motor housing protrusion 133 to form an attachment. Although not shown, the material of the collection bag 142 may be collapsed on the motor housing 124 and a portion of the material may be disposed between the motor housing protrusion 133 and the upper support lip 156 to facilitate a frictional engagement involving the material of the collection bag

[0048] Also, in the process of pulling the upper bag support 141 over the motor housing protrusion 133, a flexing of the support bend 153 may occur which loaded some potential energy into the collection bag frame 155. Due to the elasticity in the support bend 153 and the urge to revert to the original unloaded state, an elastic force is applied on the working chassis 120 by the collection bag frame 155. As such, the elastic force may urge the lower support cross arm 147 and the lower support protrusion 154 rearward with a component of the elastic force in the direction 101, and the upper support lip 156 may be urged forward with a component of the elastic force in the direction 102. The presence of these forces and the secure engagementsbetween the collection bag assembly 140 and the working chassis 120 function to maintain the removable attachment between the components while in the stowed configuration.

[0049] Now referring to FIG. 9, the push handle 160 is shown in a retracted state for use in the stowed configuration. In this regard, push handle 160 may comprise side bars 165 that may telescopically retract into the handle extension locks 163. As mentioned above, the push handle 160 may pivot via the handle rotating assembly 161, which may include the handle rotating elements 162 of the push handle 160. Additionally, the push handle 160 may include user control 164 configured to control the operation of the walk-behind mower

[0050] FIG, 10 illustrates the walk-behind mower 100 in a stowed configuration. In this regard, the collection bag assembly 140 is removably attached to the working chassis 120 with the lower support stowing element 148 engaged with the front end stowing element 128 and the upper support stowing element 150 engaged with the motor housing stowing element 125. Also, the push handle 160 has been retracted and pivoted into a position over the working chassis 120 such that the collection bag assembly 140 passed between the side bars 165 of the push handle 160. In this regard, the width between the side bars 165 of the push handle 160 may be greater than the width of the collection bag assembly 140. Finally, the walk-behind mower 100 may be stood up into an upright position with the back end 122 engaged with the floor surface 170 to reduce the footprint area of the stowed mower. In this position, the collection bag assembly 140 does not contact the floor surface 170. Additionally, two of the four wheels 127 (i.e., the front wheels 127) do not contact the floor surface

[0051] According to a first example embodiment, a walk-behind mower is provided that may comprise a working chassis comprising a front end stowing element disposed at a front end of the working chassis and a motor housing comprising a motor housing stowing element. The walk-behind mower may also comprise a collection bag assembly comprising a collection bag frame and a collection bag coupled to and supported by the collection bag frame. The collection bag frame may comprise a lower support stowing element and an upper support stowing element.

In an operating configuration for the walk-behind mower, the collection bag assembly may be removably attached to a back end of the working chassis to catch clippings. In a stowed configuration for the walk-behind mower, the collection bag frame of the collection bag assembly may be removably attached to the working chassis by an engagement of the lowersupport stowing element with the front end stowing element and an engagement of the upper support stowing element with the motor housing stowing element.

[0052] According to a second example embodiment of the walk-behind mower, which may be combined with the first example embodiment, the collection bag frame may comprise an upper bag support and a cantilever assembly comprising lower support arms coupled to the upper bag support. Additionally, in the operating configuration, the upper bag support may support the collection bag from above and the collection bag frame may be supported by a bag assembly securing element of the Working chassis. The lower support arms may couple with the back end of the working chassis to provide cantilever support to the upper bag support.

[0053] According to a third example embodiment of the walk-behind mower, which may be combined with the second example embodiment, the lower support stowing element may comprise a lower support cross arm coupled between the lower support arms. Additionally, in the stowed configuration, the lower support cross arm may be disposed within a cross arm receiving groove of the front end stowing element.

[0054] According to a fourth example embodiment of the walk-behind mower, which may be combined with the third example embodiment, the lower support stowing element may further comprise a lower support protrusion extending from the lower support cross arm. Additionally, in the stowed configuration, the lower support protrusion may be disposed within a protrusion receiving slot of the front end stowing element. A depth of the protrusion receiving slot may be greater than a depth of the cross arm receiving groove.

[0055] According to a fifth example embodiment of the walk-behind mower, which may be combined with the second, third, or fourth example embodiments, a coupling of the cantilever assembly with the upper bag support exhibits an elasticity such that, when the walk-behind mower is in the stowed configuration, an elastic force urges the lower support stowing element towards the front end stowing element and urges the upper support stowing element towards the motor housing stowing element to securely attach the collection bag assembly to the working chassis.

[0056] According to a sixth example embodiment of the walk-behind mower, which may be combined with any of the first through fifth example embodiments, the motor housing stowing element may comprise a motor housing protrusion that extends away from the motor housing toward the back end of the working chassis. Additionally, the upper support stowing element may comprise an upper support lip, and, in the stowed configuration, the engagement between the upper support stowing element with the motor housing stowing element may comprise the motor housing protrusion being engaged with upper support lip.

[0057] According to a seventh example embodiment of the walk-behind mower, which may be combined with sixth example embodiment, an upper bag support of the collection bag assembly may comprise a concave shell with interior sidewalls that comprise the upper support lip. According to an ei ghth example embodiment of the walk-behind mower, which may be combined with sixth or seventh example embodiments, the motor housing protrusion does not extend beyond the of the working chassis. According to a ninth example embodiment of the walk-behind mower, which may be combined with sixth through eighth example embodiments, the motor housing protrusion comprises a motor housing handle.

[0058] According to a tenth example embodiment of the walk-behind mower, which may be combined with any of the first through ninth example embodiments, the walk-behind mower may further comprise four wheels. Additionally, in the stowed configuration, the back end of the working chassis may be in contact with a floor surface, and the collection bag assembly and two of the four wheel are not in contact with the floor surface.

[0059] According to a eleventh example embodiment of the walk-behind mower, which may be combined with any of the first through tenth example embodiments, the walk-behind mower may further comprise a push handle pivotally coupled to the working chassis. ln the stowed configuration, the push handle may be pivoted into a position over the Working chassis such that the collection bag assembly passes between side bars of the push handle.

[0060] According to a twelfth example embodiment of the walk-behind mower, which may be combined with eleventh example embodiment, the side bars of the push handle telescopically retract. According to a thirteenth example embodiment of the walk-behind mower, which may be combined with any of the first through twelfth example embodiments, the collection bag frame may comprise a bag handle that is aligned along a longitudinal axis of the collection bag frame with the lower support stowing element and the upper support stowing element to facilitate installation of the collection bag assembly into the stowed configuration.

[0061] According to a fourteenth example embodiment of the walk-behind mower, which may be combined with any of the first through thirteenth example embodiments, in the stowed configuration, a portion of the collection bag is disposed between the engagement between theupper support stowing element with the motor housing stowing element. Additionally, material of the collection bag may provide a frictional engagement between the upper support stowing element with the motor housing stowing element.

[0062] According to fifteenth example embodiment, another example embodiment of a walk- behind mower is provided. The walk-behind mower may comprise a working chassis comprising a front end stowing element disposed at a front end of the working chassis and a motor housing comprising a motor housing stowing element. The walk-behind mower may further comprise a collection bag frame comprising a lower support stowing element on a cantilever assembly and an upper support stowing element on an upper bag support. ln an operating configuration for the walk-behind mower, the collection bag frame may be removably attached to a back end of the Working chassis to catch clippings. ln a stowed configuration for the walk-behind mower, the collection bag frame may be removably attached to the working chassis by an engagement of the lower support stowing element with the front end stowing element and an engagement of the upper support stowing element with the motor housing stowing element. Further, a coupling of the cantilever assembly with the upper bag support exhibits an elasticity such that an elastic force urges the lower support stowing element towards the front end stowing element and urges the upper support stowing element towards the motor housing stowing element to securely attach the collection bag assembly to the working chassis. [0063] According to a sixteenth example embodiment of the walk-behind mower, which may be combined with any of the fifteenth example embodiment, a cantilever assembly may comprise lower support arms coupled to the upper bag support. Additionally, in the operating configuration, the upper bag support may support a collection bag from above and the collection bag support frame is supported by a bag assembly securing element of the working chassis. Additionally, the lower support arms may couple with the back end of the working chassis to provide cantilever support to the upper bag support.

[0064] According to a seventeenth example embodiment of the walk-behind mower, which may be combined with the sixteenth example embodiment, the lower support stowing element may comprise a lower support cross arm coupled between the lower support arms. ln the stowed configuration, the lower support cross arm may be disposed within a cross arm receiving groove of the front end stowing element.[0065] According to an eighteenth example embodiment of the walk-behind mower, which may be combined with the seventeenth example embodiment, the lower support stowing element may further comprise a lower support protrusion extending from the lower support cross arm. Additionally, in the stowed configuration, the lower support protrusion may be disposed within a protrusion receiving slot of the front end stowing element. Further, a depth of the protrusion receiving slot is greater than a depth of the cross arm receiving groove.

[0066] According to a nineteenth example embodiment of the walk-behind mower, which may be combined with any of the fifteenth through eighteenth example embodiments, the motor housing stowing element may comprise a motor housing protrusion that extends away from the motor housing toward the back end of the working chassis. Additionally, the upper support stowing element comprises an upper support lip, and, in the stowed configuration, the engagement between the upper support stowing element with the motor housing stowing element may comprise the motor housing protrusion being engaged with upper support lip.

[0067] According to a twentieth example embodiment of the walk-behind mower, which may be combined with the nineteenth example embodiment, an upper bag support of the collection bag frame may comprise a concave shell with interior sidewalls that comprise the upper support lip.

[0068] Many modifications and other embodiments of the inventions set forth herein will come to mind to one skilled in the art to which these inventions pertain having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the inventions are not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Moreover, although the foregoing descriptions and the associated drawings describe exemplary embodiments in the context of certain exemplary combinations of elements and/or functions, it should be appreciated that different combinations of elements and/ or functions may be provided by alternative embodiments without departing from the scope of the appended claims. ln this regard, for example, different combinations of elements and/ or functions than those explicitly described above are also contemplated as may be set forth in some of the appended claims. ln cases where advantages, benefits or solutions to problems are described herein, it should be appreciated that such advantages, benefits and/or solutions may be applicable to some example embodiments, but not necessarily all example embodiments. Thus,any advantages, benefits or solutions described herein should not be thought of as being critical, required or essential to all embodiments or to that Which is claimed herein. Although specific terrns are ernployed herein, they are used in a generic and descriptive sense only and not for purposes of lirnitation.

Claims

1. A walk-behind mower (100) comprising: a working chassis (120) comprising a front end stowing element (128) disposed at a front end (121) of the working chassis (120) and a motor housing (124) comprising a motor housing stowing element (l25); and a collection bag assembly (140) comprising a collection bag frame (155, 255) and a collection bag (142) coupled to and supported by the collection bag frame (155, 255); wherein the collection bag frame (155 , 255) comprises a lower support stowing element (148, 248) and an upper support stowing element (150, 250); wherein, in an operating configuration for the walk-behind mower (100), the collection bag assembly (140) is removably attached to a back end (122) of the working chassis (120) to catch clippings; characterized in that in a stowed configuration for the walk-behind mower (100), the collection bag frame (15 5 , 255) of the collection bag assembly (140) is removably attached to the working chassis (120) by an engagement of the lower support stowing element (148, 248) with the front end stowing element (128) and an engagement of the upper support stowing element (150, 250) with the motor housing stowing element (125).

2. The walk-behind mower (100) of claim 1, wherein the collection bag frame (155 , 255) comprises: an upper bag support (141, 241); and a cantilever assembly (145, 245) comprising lower support arms (146, 246) coupled to the upper bag support (141, 241); wherein, in the operating configuration: the upper bag support (141, 241) supports the collection bag (142) from above and the collection bag frame (155 , 255) is supported by a bag assembly securing element (130) of the working chassis (l20); and the lower support arms (146, 246) couple with the back end (122) of the working chassis (120) to provide cantilever support to the upper bag support (141, 241).

3. The walk-behind mower (100) of claim 2, wherein the lower support stowing element (148, 248) comprises a lower support cross arm (147, 247) coupled between the lower support arms (146, 246); wherein, in the stowed configuration, the lower support cross arrn (147, 247) is disposed within a cross arrn receiving groove (131) of the front end stowing element (128).

4. The walk-behind mower (100) of claim 3, wherein the lower support stowing element (148) further comprises a lower support protrusion (154) eXtending from the lower support cross arm (147); wherein, in the stowed configuration, the lower support protrusion (154) is disposed within a protrusion receiving slot (132) of the front end stowing element (128); wherein a depth of the protrusion receiving slot (132) is greater than a depth of the cross arm receiving groove (131).

5. The walk-behind mower (100) of claim 2, wherein a coupling of the cantilever assembly (145, 245) with the upper bag support (141, 241) eXhibits an elasticity such that, when the walk-behind mower (100) is in the stowed configuration, an elastic force urges the lower support stowing element (148, 248) towards the front end stowing element (128) and urges the upper support stowing element (150, 250) towards the motor housing stowing element (125) to securely attach the collection bag assembly (140) to the working chassis (120).

6. The walk-behind mower (100) of claim 1, wherein the motor housing stowing element (125) comprises a motor housing protrusion (133) that eXtends away from the motor housing (124) toward the back end (122) of the working chassis (120); wherein the upper support stowing element (150, 250) comprises an upper support lip (156, 256); wherein, in the stowed configuration, the engagement between the upper support stowing element (150, 250) with the motor housing stowing element (125) comprises the motor housing protrusion (133) being engaged with upper support lip (156, 256).

7. The walk-behind mower (100) of claim 6, wherein an upper bag support (141) of the collection bag assembly (140) comprises a concave shell (157) with interior sidewalls (158) that comprise the upper support lip (156).

8. The walk-behind mower (100) of claim 6, wherein the motor housing protrusion (133) does not eXtend beyond the back end (122) of the working chassis (120).

9. The walk-behind mower (100) of claim 6, wherein the motor housing protrusion (133) comprises a motor housing handle (134).

10. The walk-behind mower (100) of claim 1 further comprising four Wheels (127); wherein, in the stowed configuration, the back end (122) of the working chassis (120) is in contact with the ground (170), and the collection bag assembly (140) and two of the four wheel are not in contact with the ground (170).

11. The walk-behind mower (100) of claim 1, further comprising a push handle (160) pivotally coupled to the working chassis (120); wherein, in the stowed configuration, the push handle (160) is pivoted into a position over the working chassis (120) such that the collection bag assembly (140) passes between side bars (165) of the push handle (160).

12. The walk-behind mower (100) of claim 11, wherein the side bars (165) of the push handle (160) is telescopically retractable.

13. The walk-behind mower (100) of claim 1, wherein the collection bag frame (155) comprises a bag handle (143) that is aligned along a longitudinal aXis of the collection bag frame (155) with the lower support stowing element (148) and the upper support stowing element (150) to facilitate installation of the collection bag assembly (140) into the stowed configuration.

14. The walk-behind mower (100) of claim 1, wherein, in the stowed configuration, a portion of the collection bag (142) is disposed between the engagement between the upper support stowing element (150, 250) with the motor housing stowing element (125); wherein a material of the collection bag (142) provides a frictional engagement between the upper support stowing element (150, 250) and the motor housing stowing element (125 ).

15. A walk-behind mower (100) comprising: a working chassis (120) comprising a front end stowing element (128) disposed at a front end (121) of the working chassis (120) and a motor housing (124) comprising a motor housing stowing element (125); and a collection bag frame (155 , 255) comprising a lower support stowing element (148, 248) on a cantilever assembly (145, 245) and an upper support stowing element (150, 250) on an upper bag support (141, 241); wherein, in an operating configuration for the walk-behind mower (100), the collection bag frame (155, 255) is removably attached to a back end (122) of the working chassis (120) to catch clippings; characterized in that, in a stowed configuration for the walk-behind mower (100): the collection bag frame (155 , 255) is removably attached to the working chassis (120) by an engagement of the lower support stowing element (148, 248) with the front end stowing element (128) and an engagement of the upper support stowing element (150, 250) with the motor housing stowing element (125); and a coupling of the cantilever assembly (145 , 245) with the upper bag support (141, 241) eXhibits an elasticity such that an elastic force urges the lower support stowing element (148, 248) towards the front end stowing element (128) and urges the upper support stowing element (150, 250) towards the motor housing stowing element (125) to securely attach the collection bag assembly (140) to the working chassis (120).

16. The walk-behind mower (100) of claim 15, wherein the a cantilever assembly (145 , 245) comprises lower support arms (146, 246) coupled to the upper bag support (141, 241); wherein, in the operating configuration: the upper bag support (141, 241) supports a collection bag (142) from above and is supported by a bag assembly securing element (130) of the working chassis (120); and the lower support arms (146, 246) couple with the back end (122) of the working chassis (120) to provide cantilever support to the upper bag support (141, 241).

17. The walk-behind mower (100) of claim 16, wherein the lower support stowing element (148, 248) comprises a lower support cross arm (147, 247) coupled between the lower support arms (146, 246); wherein, in the stowed configuration, the lower support cross arrn (147, 247) is disposed within a cross arrn receiving groove (131) of the front end stowing element (128).

18. The walk-behind mower (100) of claim 17, wherein the lower support stowing element (148) further comprises a lower support protrusion (154) eXtending from the lower support cross arm (147); wherein, in the stowed configuration, the lower support protrusion (154) is disposed within a protrusion receiving slot (132) of the front end stowing element (128); wherein a depth of the protrusion receiving slot (132) is greater than a depth of the cross arm receiving groove (131).

19. The walk-behind mower (100) of claim 15, wherein the motor housing stowing element (125) comprises a motor housing protrusion (133) that eXtends away from the motor housing (124) toward the back end (122) of the working chassis (120); wherein the upper support stowing element (150, 250) comprises an upper support lip (155, 256); wherein, in the stowed configuration, the engagement between the upper support stowing element (150, 250) with the motor housing stowing element (125) comprises the motor housing protrusion (133) being engaged with upper support lip (156, 256).

20. The walk-behind mower (100) of claim 19, wherein an upper bag support (141) of the collection bag frame (155) comprises a concave shell (157) with interior sidewalls (158) that comprise the upper support lip (156).