Abstract: Disclosed are an all-wheel drive self-propelled assembly and mower, which includes a front-drive unit including a front transmission mechanism, a front-wheel shaft mechanism and front-wheels. The front-wheel shaft mechanism includes a front linkage rod provided with a front avoidance groove matched with the front transmission mechanism. A rear-drive unit including a rear transmission mechanism provided with a rear output shaft, a rear-wheel shaft mechanism and rear-wheels, and a height adjusting unit directly or indirectly controlling the rotation of the front shaft plates. When a distance between the front output shaft and ground is minimum, the front avoidance groove is arranged above a plane where the front output shaft and the rear output shaft are located.

Abstract: An apparatus for moving an object across a ground surface may include a platform having an upper surface for positioning the object on, and a perimeter. The apparatus may also include a plurality of lift assemblies configured to selectively raise the platform off of the ground surface and permit the apparatus to move across the ground surface with the object carried on the platform. The plurality of lift assemblies may be located along the perimeter of the platform, and each of the lift assemblies may have a deployed condition and a retracted condition. The deployed condition may be characterized by the lift assembly facilitating movement of the platform across the ground surface.

Abstract: A wide area mower with an open-box structure mower deck. The deck has a width from the left to right side of about 72 to 120 inches. The deck's length is about 24 to 70 inches. A left and right front wheel are positioned in front of the deck. The wide mower deck will flex, twist, or bend when one of the left or right wheels travels over uneven terrain while the rest of the mower travels over substantially level terrain. A cutting height adjustment mechanism is provided on the mower that allows an operator to raise or lower an entire left side or an entire right side of the mower deck to a selected cutting height. This is done simply by disengaging a locking mechanism and manipulating a lever on a four-bar linkage attached to each side of the deck and then re-engaging the locking mechanism.

Abstract: An assembly includes a common parts sub-assembly, an actuator, a physical appendage, and a mounting bracket. The common parts sub-assembly includes a rotor bracket and a housing. The actuator is connected to the rotor bracket to cause the rotor bracket to rotate during actuator actuation. The actuator and the rotor bracket connected thereto are housed within the housing. The mounting bracket connects the physical appendage to the rotor bracket whereby the physical appendage moves between stowed and deployed positions during actuator actuation. The actuator is either an electric motor actuator or a pneumatic actuator that are substitutable with one another to assemble the assembly without modification to the common parts sub-assembly or the physical appendage. The physical appendage may be either a stop sign or a crossing guard arm that are substitutable with one another to assemble the assembly without modification to the common parts sub-assembly or the actuator.

Abstract: A mower deck suspended stably from a lawn mower frame by a four link frame of a front hanger and four link frame of a rear hanger. The height of the mower is adjusted when a handle is pushed forward to rotate a rotatable axle in a clockwise direction, which causes a driving lever to rotate in a clockwise direction. A fine adjustment screw pushes a swing arm to rotate rearward, which forces a bridging swing arm to rotate in a clockwise direction via a second link. The bridging swing arm forces the first link to swing upward which forces the rear end of the rear hanger to swing upward, thereby raising the mower deck. When the handle is pulled rearward, the mower deck will be lowered.

Abstract: A mechanical lift features the low profile of a traditional wood and cloth cot stretcher allowing patients to be easily rolled or moved upon a flat surface. An integrated mechanical lift system then lifts a patient to a raised position without need for manual lifting. The lift allows patients to be moved and transported without back strain to health care workers or first responders. The lift may be raised by the mechanical movement or expansion of a piston.

Abstract: In one embodiment, a vehicle comprises a body, a steerable drive wheel attached to the body, and a load platform connected to the body that is movable between a lowered position and a lifted position. A load wheel is connected to the load platform and an intermediate load wheel is connected to the vehicle and positioned between the drive wheel and the load wheel. The load wheel is configured to facilitate moving the load platform between the lowered position and the lifted position and the intermediate load wheel is configured to cooperate with the load wheel to facilitate moving the load platform between the lowered position and the lifted position. The intermediate load wheel is also configured to form a pivot about which the vehicle turns throughout a range of motion of the load platform between and including the lowered position and the lifted position.

Abstract: A height adjusting mechanism for changing the height of a load supporting portion of a trailer. An axle is rotatably connected to a trailer frame of the trailer for rotation between a towing position and a loading position. The axle has a first portion and a pair of axle shafts that are resiliently mounted with respect to the first portion for rotation over a limited angular range of motion and are biased toward a neutral position. A pair of opposed pivot arms are rotatable in response to rotation of the axle between the towing position and the loading position. The pivot arms are rotatable with the axle shaft of the axle in response to rotation of the axle shaft with respect to the central portion of the axle.

Abstract: The present invention is directed to a trailer comprising a platform supported by a hitch assembly and at least one wheel assembly. The hitch assembly is for rigid attachment to a vehicle. A vertical guide mechanism connects the platform to the hitch assembly. The vertical guide mechanism includes a first vertical guide element capable of moving parallel to a second vertical guide element. The first vertical guide element is mounted to the platform and the second vertical guide element is mounted to the hitch assembly. A lifting mechanism is integrated with the vertical guide mechanism for raising and lowering the platform. When the platform is raised and lowered to the ground, the platform remains substantially parallel with the ground.

Abstract: A trailer having a front and a rear. The trailer includes a frame constructed to receive a bed and a hitch attached to the frame at the front of the trailer. A tube is pivotally connected to the frame between the front and the rear of the trailer. First and second support arms are connected to the tube. Each wheel support arm has an axle and a wheel located at its distal end. The trailer further includes means for rotating the tube. In one embodiment, the trailer has an inclining feature and a shoe for ground engagement. The shoe is located vertically below a central axis of the tube and longitudinally between the wheels and the front of the trailer. In a second embodiment, the trailer has an inclining and elevating feature. In this second embodiment, the hitch is pivotally connected to the front of the trailer and there is provided means for rotating the tube and rotating the hitch relative to one another to elevate, incline, or decline the bed.

Abstract: A caster suspension system that employs a linkage between the two casters constraining one to rise when the other falls while keeping moment internal to the system such that there is no tipping of the load carried by the caster suspension system.

Abstract: This invention is directed to a device of “a tutorial and wits-increment toy car”, mainly consists of a shell body with gear case at both sides, and within the gear case sets up multiple wheels used to act as mechanical powers transfer connection between the motor and the wheels, whereas at the top and back of the shell body fixed with multiple metal buttons and hexagonal buttons. According to the former structure, altering the size of wheel can adjust the wheel rotating speed, and makes the learners understand the basic electronic and mechanical control theory while playing the toy car, and makes the present invention become a best tool of cerebration training.

Abstract: A portable transportation assembly 10 having a pair of wheels 40, 42 which may be selectively raised and lowered and which is adapted to transport a bathroom assembly 200 in an easy and efficient manner.

Abstract: The present invention concerns a cart with a flat cargo platform adapted to travel in the horizontal direction via foldable wheels mounted respectively via one wheel fork, and with a vertically pivotable pole handle.

Abstract: A pedal-controlled movable bottom frame includes a frame body, two movable connecting rods and a position rod. The frame body and the movable connecting rods are respectively provided with two casters and have their ends respectively assembled with four support legs of a worktable. The position rod is assembled between the two movable connecting rods, having its intermediate portion secured with a retaining unit. A pedal is assembled on the frame body above the retaining unit, and a clasping member is provided under the pedal. The frame body and the movable connecting rods is turned downward by treading the pedal once, letting the casters support the worktable and the clasping member clasp the retaining unit. The clasping member disengages from the retaining unit by treading the pedal once again, letting the support legs support the worktable again.

Abstract: A movable bottom frame includes a frame body, two movable connecting rods and a locking rod. The frame body and the movable connecting rods are respectively provided with two casters and have their ends respectively and pivotally assembled with four support legs of a worktable. The locking rod is assembled between the two movable connecting rods. The frame body has a first pedal to be pedaled down to make the frame body and the movable connecting rods pivotally turned downward to let the casters stand on the ground and lift up the worktable. A second pedal positioned beside the first pedal can be pedaled down to disengage the locking rod from the locking hook, letting the worktable supported by its four support legs again. Thus the worktable can be stopped or moved slidably by pedaling.

Abstract: An apparatus and method for adjusting the height of a wheel, particularly a caster wheel, in relation to a structure such as a mower deck of a lawnmower includes a frame member, a hollow guide member, a transverse element, and a lever. The frame member is interconnected between one or more caster wheels and the structure. The frame member includes an angled section disposed along an angled adjustment direction. Spaced recesses are formed in the angled section and arranged along the adjustment direction. The guide member and transverse element are attached to the structure. The angled section is slidable through the guide member. The lever is pivotably connected to the transverse element and includes a locking element. By pivoting the lever, the locking element can be brought into engagement with a selected one of the recesses to fix the angled section at a desired position relative to the guide member and thus the height of the structure relative to a ground surface over which the caster wheel or wheels roll.

Abstract: A lawn mower having a deck; wheel assemblies; height adjustment mechanisms positioned intermediate the deck and wheel assemblies; an interconnecting bar positioned between at least two of the height adjustment mechanisms, the interconnecting bar being connected to the height adjustment mechanisms to transfer the movement of one height adjustment mechanism to the other height adjustment mechanism so that the height adjustment mechanisms operate in unison; a rack located on the interconnecting bar; a locking mechanism attached with the rack to hold the interconnecting bar stationary relative to the deck, the locking mechanism including a pinion rotatably mounted on the deck, the pinion meshing with the rack to releasably lock the locking mechanism in a plurality of positions.

Abstract: A lift dolly apparatus is described for use in lifting and transporting objects. A latching mechanism is described which securely latches the dolly in the lifted position and can be easily released by using a foot pedal.