The invention relates to motorized machines for operating an implement, such a shovel blade, a hitch, an aerator, a dethatcher, a lawn sweeper, a spreader, a wheel barrow, a sweeping brush, or a lawn mower.
It is desirable to remove snow from trafficked areas during and after a snow fall. These trafficked areas may include sidewalks, patios, decks, driveways, roads, or parking lots.
Several devices exist to remove snow including snow blowers and traditional manual shovels. Snow blowers generally use an impeller or auger to both move the snow into the machine and force it out the discharge chute, throwing the snow to another location. The traditional manual shovel has a blade attached to a handle.
These devices each have disadvantages. The traditional manual shovel requires great physical effort and may cause back strain or injury for a user. Traditional snow blowers and other implement machines are often bulky and do not work well when there is only a slight amount of snow accumulation. Heavy snow blowers may be difficult for certain users to operate.
The present inventor recognizes the need for a light weight, maneuverable, safe, and easy to operate device for moving materials including snow. The inventor also recognizes it would be desirable to have such a device having a removable implement and capable of operating one of a number of implements including a hitch, an aerator, a dethatcher, a lawn sweeper, a spreader, a wheel barrow, a sweeping brush, or a lawn mower. The inventor also recognizes the need for a device that is more maneuverable than a traditional snow blower or implement machine, but that does not require the physical effort of a manual shovel or implement. The inventor further recognizes the need for a device that works with all types of snow and all amounts of snow accumulation. The inventor recognizes a need for a device that has fewer wearable parts than a traditional snow blower or implement machine. The inventor also recognizes a need for a device that is easily operated by users of various ages.
The invention provides a user-walk-behind implement machine. The machine has a frame with a front and a rear and a motor connected to the frame and driving a pair of laterally spaced apart drive wheels. The machine has a receiver connected to a front portion of the frame in an area of the frame located between the drive wheels. The machine has an implement detachably connected to the receiver and a handle connected to the frame and extending away from the rear of the frame.
A motor control may be mounted to the handle for regulating the speed of the motor. The handle may also comprise a gear box control for regulating a gear ratio of the gearbox.
In one embodiment, the machine has at least one rear wheel located to the rear of the drive wheels. The at least one rear wheel connected to a height adjustment mechanism configured to adjust the vertical position of the implement.
In one embodiment, the machine has at least two laterally spaced apart wheels located to the rear of the drive wheels.
In one embodiment, the machine has a height adjustment mechanism configured to pivot at least a portion of the frame about an axis of the drive wheels to adjust the vertical position of the implement.
In one embodiment, the machine has a rear axle connected to an upwardly extending axle mount. The machine has a pair of laterally spaced apart rear wheels connected to the axle. The height adjustment mechanism comprises an axle mount receiver. The receiver has a lock for releasably securing the receiver along the axle mount.
In one embodiment, the implement is a shovel. The shovel has an arm detachably connected to the receiver, a pivot mount, and pivotable blade. The pivot mount is configured to locate the blade at one of a plurality of positions relative to the arm. The arm has a blade mount opposite an end connected to the receiver. The blade mount comprises a plurality of blade mount holes. The pivot mount comprises at least one pivot mount hole aligned with one blade mount hole and a locking pin inserted through the aligned holes to secure the blade in a vertical position relative to the arm. A user operates the shovel by engaging the motor and steering the shovel to plow snow from a surface.
In one embodiment, the blade has a centered position and a maximum pivotable range being 15 degrees in either direction from the center.
The implement may be a hitch, an aerator, a dethatcher, a lawn sweeper, a spreader, a wheel barrow, or a lawn mower. The implement may also be a sweeping brush, and wherein the brush is driven to rotate by a belt driven by the motor.
In one embodiment, the receiver comprises an anchor and a stop. The implement has a latch configured to secure the implement to the receiver. The latch has a pivotable hook attached to a lever. The latch has a locked position. The lever engages the stop and the lever presses the hook into the anchor when the latch is in a locked position.
In one aspect of the embodiment, the handle extends behind the motor and the implement extends in front of the motor.
In one aspect of the embodiment, the wheels contact a surface to be action by the implement and the handle is operated by a user that is standing on the surface.
Numerous other advantages and features of the present invention will become readily apparent from the following detailed description of the invention and the embodiments thereof, and from the accompanying drawings.
While this invention is susceptible of embodiment in many different forms, there are shown in the drawings, and will be described herein in detail, specific embodiments thereof with the understanding that the present disclosure is to be considered as an exemplification of the principles of the invention and is not intended to limit the invention to the specific embodiments illustrated.
Referring to
Connecting the axle mount 106a to the receiver at a point on the axle mount farther from the axle tilts the implement machine in a forward direction. Connecting the axle mount 106a to the frame at a point closer to the axle tilts the implement machine in a rearward direction. Adjusting the contact point adjusts the vertical location of the blade with respect to the ground.
A plow blade mount 107 is attached to and extends forward from the frame. A plow blade 108 connects to the frame by connection with the plow blade mount 107. In one embodiment, the plow blade 108 connects to a connection shaft 110. The plow blade mount 107 comprises two elongated shafts 109a, 109b. The connection shaft 110 is connected between the elongated shafts 109a, 109b with bolts 111a, 111b. The plow blade 108 is connected to the connection member 107 so that the face 112 of the plow blade faces away from the implement machine 100. Bolts 151 connect the elongated shafts 109a, 109b and the handle 113 to the frame 120b.
The implement machine may comprise a frame and structure such as disclosed in U.S. Pat. No. 7,237,620, which is incorporated by reference. The tine assemblies of the '620 patent are replaced with the front wheels 102 of the implement machine. The plow blade mount 107 is attached to the upper flange 104 of the '630 patent. The elongated shafts 109a, 109b connect within the horizontally disposed annular recesses 114, 116 of the '630 patent respectively. The elongated shafts 109a, 109b may also connect to the support portions 120, 122 of the handle 18 of the '620 patent.
In one embodiment, a handle 113 is connected to the frame and extends upward and away from the implement machine 100. The handle extends in a direction opposite a plow blade end of the implement machine 100. The handle may comprise any object capable of controlling the direction of or steering the implement machine, including for example, a steering wheel with an accompanying steering mechanism.
In one embodiment, a motor start button 116 and or a motor throttle control 117 are attached to the handle and connected to the motor 103. The handle may also have a kill switch 118, 518 that must be held in a depressed position by the operator while the implement machine is in operation. Releasing the kill switch 118, 518 will stop the motor 103. In another embodiment, a gear box control may be mounted on the handle, allowing the user to adjust a gear ratio of the gear box.
A tubular handle 513 is connected to the frame and extends upward and away from the rear of the frame. A pair of rear wheels 505a, 505b connect to an axle 212a. The axle is connected to the gear box.
The implement machine provides a blade height adjustment mechanism 530 in the L direction. The blade height adjustment mechanism 530 is the same as provided in the blade height adjustment mechanism 130. The blade height adjustment mechanism 530 has a receiver (not shown) that slidably receives a 606a axle mount, and a locking mechanism 606b for securing the axle mount relative to the receiver. The receiver is connected to the frame. The axle is connected to the frame by the axle mount 506a.
Connecting the axle mount 506a to the receiver at a point on the axle mount farther from the axle tilts the implement machine in a forward direction. Adjusting the contact point between the receiver and the axle mount 106a adjusts the vertical location of the implement with respect to the ground. Connecting the axle mount 106a to the receiver at a point closer to the axle tilts the implement machine in a rearward direction.
The machine 500 has an implement receiver 590 for attaching an implement.
To secure the arm 540 to the machine 500, the receiver end 549 slides into the receiver 590 until the locking mechanism mount 551 and/or support brace 547 contact the receiver face 594. The lever 553 and the hook 552 are pivoted toward an anchor 592 of the receiver 590. After the hook is extended over and down in front of the anchor 592, the lever is pulled away from the receiver and toward the surface 548a of the arm creating a secure pressured connection between the locking mechanism mount 551 and/or support brace 547 on one side and the receiver face 594 on the other. The support brace also provides structural strength to the support arm 540.
The support arm has a flat upper surface 548, an angled portion 540a, and a blade mount portion 540b. The blade mount portion 540b has an upper arm mount 542 and a lower arm mount 541. The upper mount has a pin hole 542a for receiving an anchoring pin 546. A washer 543 may be placed between the pin head and the upper mount 542. The pin 546 penetrates the hole 542a and may rest on the upper surface of the lower mount 541. The pin has a retaining pin hole (not shown) for receiving a retaining pin 545. The retaining pin 545 prevents the pin from being withdrawing through the hole 542a of the upper mount 542. In another embodiment, the lower mount has a hole aligned with the hole 542a and the pin 546 extends through the hole of the lower mount. The retaining pin 545 is secured in the pin 546 at a position below the lower mount 541.
As shown in
The upper blade mount has a pivot locking mechanism 560. The locking mechanism 560 has a spring retainer 561 that holds a spring (not show) that biases a pivot locking pin 563 in the downward direction. The spring retainer 561 has a stop (not shown) that prevents the locking pin 563 from being completely withdrawn from the spring retainer. The pin has a T handle 562 extending above the spring retainer 561. The upper arm mount 542 has a plurality of pivot locking holes 546, 565, 566. The upper blade mount 548 has one blade lock hole 548a that is alignable with one of the pivot locking holes by pivoting the blade about the axis of pin 546. The spring retainer and the pin 563 are positioned over the blade lock hole 548a.
In one embodiment, the outermost pivot locking holes 546, 566 position the blade at a maximum of 15 degree angle from center in either direction about the axis of the pin 546. This 15 degree angle provide optimal displacement of snow to the side of the blade in which the blade is angled. The blade is at a center position is when the blade is perpendicular to the arm 540a.
The receiver 590 of the machine 500, 100, is adapted to receive many types of implements.
A dethatcher 900, such as those used on ground, turf, or soil is shown in
A sweeper or brush 1000 is shown in
An aerator 1110, such as those used on ground, turf, or soil is shown in
A lawn sweeper 1200 is shown in
A hitch 1300 is shown in
A lawn mower 1400 is shown in
A spreader 1500 for spreading seed, fertilizer, and other pulverized material is shown in
In one embodiment, the wheels 502a, 502b of machine 500, 100 are removable. As shown in
From the foregoing, it will be observed that numerous variations and modifications may be effected without departing from the spirit and scope of the invention. It is to be understood that no limitation with respect to the specific apparatus illustrated herein is intended or should be inferred.
This application claims the benefit of U.S. Provisional Patent Application No. 61/053,893 filed on May 16, 2008.
Number | Date | Country | |
---|---|---|---|
61053893 | May 2008 | US |