Abstract: A powered pusher vehicle for moving a train of nested shopping carts, the vehicle having a main body portion with a central drive wheel powered by an electric motor through a worm gear transmission. Caster wheels support one end of the vehicle for ease of steering and easy manipulation of the pusher vehicle when it is not connected to the carts. A pair of normally raised wheels, on each side of the drive wheel, may be lowered to raise the drive wheel from the ground. A remote control allows the operator to manually guide the lead cart while controlling speed of the pusher vehicle with the remote control. The vehicle includes a pair of latch members for automatically connecting the front of the vehicle to a rearmost one of the nested carts. The arrangement permits a single person to manipulate a long train of nested shopping carts with ease.

Abstract: A lawnmower fifth wheel including a centrally disposed wheel engaging the earth at a site between the operator and the lawnmower rearmost wheels thereby providing sufficient stability to enable the operator to lean heavily upon the lawnmower handles without adversely affecting a mowing operation. A rigid support engaging the centrally disposed wheel and a portion of the lawnmower handle is provided. A lateral brace is also provided to stabilize the centrally disposed wheel and lawnmower handle mechanical system.

Abstract: An aerator includes a frame supported on a pair of forward wheels and a pair of rearward wheels. An aerator head is mounted on a pivot frame on the forward end of the aerator frame, the pivot frame mounted to move the aerator head from a disengaged position above the ground, downwardly to an engaged position wherein tines on the aerator head work the soil. The pivot frame includes a forwardly projecting arm upon which the aerator head is mounted, and a rearwardly projecting arm upon which the forward wheels of the frame are mounted, such that movement of the pivot frame will engage either the forward wheels of the frame or the aerator head. An hydraulic cylinder is mounted between the frame and the pivot frame to selectively move the pivot frame to engage the aerator head or the forward wheels with the ground.

Abstract: A power driven personal walker for the infirm and handicapped comprising laterally spaced uprights for grasping by a user in a walking position, a horizontal base frame supporting the uprights in use position rearwardly open to the legs and feet of the user and having a transverse front portion, a wheel assembly, and means to drive the wheels including a motor coupled to said axle means in wheel driving relation.

Abstract: A convertible sulky is interchangeable between stand-up and sit-down configurations so as to allow a mower operator to operate the mower from either a standing or seated position behind the mower. The convertible sulky comprises an H-shaped support wheelbase frame, to opposite legs of which a pair of wheel-mounting columns are affixed. Attached to the H-shaped support wheelbase frame member is a T-shaped mower attachment frame, having a central leg, an upper end of which is inclined forwardly H-shaped support wheelbase frame for attachment with the rear of the mower, by means of a ball-hitch fixture. A pair of generally L-shaped foot plates are secured to the frame structure formed by the T-shaped mower attachment frame and the H-shaped support wheelbase frame.

Abstract: A device for emptying the sewage holding tank of a boat. The device would have a frame, a tank mounted to the frame for the storage of sewage from the boat. In addition an engine would be mounted to the frame with the engine operating a pump also mounted to the frame. There would be at least one pair of hoses, with one hose, the discharge hose, having one end connected to the tank and the other end mounted to said pump. The second hose, the intake hose, could have one end mounted to the pump and the other end free. There would also be at least one pair of wheels mounted to and extending at least partially below the frame to facilitate the transportability of the device.

Abstract: A variable speed drive system for use with a self-propelled device is coupled by a belt to an engine which is mounted to the device. The variable speed drive system includes a variable pitch pulley held in spaced-apart relation to the drive shaft by a fixture and rotates about the drive shaft between a first position proximal to the engine and a second position distal to the engine. In the first position, the drive system is disengaged from the engine and the speed of the self-propelled device is zero, the belt being slack and providing no drive force to the drive system. In the second position, the drive system is moved a maximum amount about the drive shaft and is positioned to achieve a maximum speed. The drive system can also assume any intermediate position between the first and second positions, with the speed of the self-propelled device being determined by the amount of movement about the drive shaft toward the second position.

Abstract: An accessory drive unit for attachment to the central support member of a non-motorized golf bag cart having two rear wheels, the accessory drive unit including a front wheel drive unit having a front wheel, a motor within the front wheel, control circuitry for controlling the speed and direction of rotation of the front wheel, and structure to steer the front wheel unit.

Abstract: The invention is a two-wheeled, battery powered, trailer dolly that may be coupled to a boat or other vehicle for facilitating the movement of such vehicles. A deep-discharge, marine battery powers a winches which operates the axle of the dolly. The axle has an inner collar at each end with abutment portions that interact with similar abutment portions on an outer collar in connection with the wheels. The use of the inner and outer collar arrangement provides for separate turning of each wheel through turns. The dolly utilizes a trailer ball in order to allow a rotatable coupling of the trailer at the ball and not on a trailer jack as shown in prior art.

Abstract: Apparatus for motorized transport of the hospital bed and care cart docks to the head end of the bed and has a drive wheel, a motor propelling the drive wheel, a joy stick type potentiometer for controlling the speed and direction of the drive wheel and handles for grasping the apparatus and maneuvering the apparatus and the hospital bed. Gas springs are actuated by the bed when the motorized transport apparatus and bed are docked together for exerting a downward force on the drive wheel to reduce the tendency of the drive wheel to slip. The apparatus falls within the footprint of the bed.

Abstract: A transmission for a wheeled appliance responsive to pushing and pulling forces applied to a handle. The transmission includes speed reduction gearing and forward and reverse clutching elements which provide high power capacity, large speed reduction, durability, quiet operation and smooth power engagement. The main power train elements all rotate on parallel axes and the forward and reverse clutching elements are essentially independent of one another and resistant to wear.

Abstract: A vehicle for conveying trolleys have driving wheels activated by a control assembly to engage and advance one or a series of trolleys. A reel assembly is detachably engageable with the leading trolley and supports a first anchoring line which secures the trolleys to the vehicle and a second control line which is connected to the control assembly and which made be pulled or tensioned to control operation of the vehicle.

Abstract: A walk-behind, self-propelled lawn mower having a variable speed drive transmission responsive to operator-applied forces. The transmission includes an input gear operatively connected to the engine for constant rotation during operation, an intermediate gear meshed with the input gear, and a driving bevel gear meshed with a drive shaft bevel gear. A face of the driving bevel gear is biased away from a face of the intermediate gear. A clutching surface is interposed between the gear faces for coupling the intermediate gear and the driving bevel gear in driving engagement. An actuator lever is controllably connected to the intermediate gear and can be adjusted to vary the sensitivity of the drive transmission to operator-applied forces.

Abstract: The present invention pertains to a portable motorized suitcase which can operate in either self-propelled or manual modes. The suitcase includes an extendable handle which is provided with a multi-position switch, allowing the user to selectively control the speed of the suitcase when in the self-propelled mode, as well as allowing the user to choose between modes of operation. A motor, which is controlled by the multi-position switch located on an extendable handle, conveys power to the ground engaging wheel via a centrifugal clutch arrangement. The clutch allows the motor to propel the suitcase when it is in the self-propelling mode while not hindering the rolling of the wheels when the motor is in the manual mode. Therefore, the motor and clutch arrangement either turns the wheels or allows them to free-wheel, depending upon the operator's positioning of the multi-position switch. Transition between modes of operation occurs automatically in accordance with user manipulation of the switch.

Abstract: A power driven wheel barrow includes a pair of frame members, the pair of frame members being connected at a front portion thereof, a drive wheel rotatably mounted at the front portion of the frame members, a motor for providing rotational motion to a first shaft about an axis having a direction substantially normal to a direction of an axis of rotation of the drive wheel, a sealed gear box for converting the rotational motion provided by the first shaft to a direction substantially parallel to the direction of rotation of the drive wheel and outputting the converted rotational motion and a roller for selectively engaging and disengaging the rotational motion output by the sealed gear box to and from the drive wheel.

Abstract: A motor-driven propulsion device (10) can be attached separately to a surface-cleaning machine (1), which has a drive (2) for a rotor drum and is equipped with a handle supporting deck (3) for manual propulsion. For this, the device (10) is connected mechanically to the handle supporting deck (3) and secured to the axle (5) of the surface-cleaning machine (1) with a swivel hook (34) and a two-pronged fork. In this position, at least one motor-driven frictional wheel (11) presses on the running wheels (6) of the surface-cleaning machine (1). The frictional wheel (11) is driven by a separate motor in the housing (12) of the propulsion device (10), which, if necessary, uses a separate power supply or the same power supply as the drive motor of the rotor drum of the surface-cleaning machine (1).

Abstract: A walk-behind power driven lawn mower having a front wheel steering system including a control mounted on the mower handle and a linkage system interconnecting the control and the front wheels of the mower so that in operation the mower may be steered to the right or left by the operator as the grass cutting operation proceeds. The control includes a lever for controlling the drive transmission to the rear wheels. Also disclosed is a locking tab attached to a pivoting wheel drive actuation handle which lockingly engages an operator presence bar in engagement when said wheel drive actuation handle is in engagement.

Abstract: A wheeled cart for facilitating the transportation and delivery of a load of material including an elongated frame having a pair of drive wheels mounted to the forward end of the frame and a pair of caster wheels operatively engaged with and supporting the rear end of the frame. A hopper attached to the upper side of the frame and suitable for carrying and dumping a load. A motive means mounted on the frame adjacent to the forward end of the frame and a drive means connecting the motive means and the drive wheels. A handle is connected to and extends rearwardly and upwardly from the rear of the frame and has control means attached thereto and connected to the motive means for controlling the forward and rearward movement of the cart and for stopping the cart.

Abstract: A lawn mower comprising a frame, an engine mounted on the frame, and a cutting deck removably mounted on the frame. A wheel mounting structure is pivotally connected to the frame and rear wheels are mounted on the wheel mounting structure wherein the pivotal movement of the frame with respect to the wheel mounting structure raises and lowers the frame with respect to the wheels thereby raising and lowering the cutting deck. A lever mechanism is provided for pivoting the frame with respect to the wheel mounting structure to thereby raise and lower the frame with respect to the wheel mounting structure and a rod and plurality of holes are provided for fixing the position of the frame with respect to the wheel mounting structure at any of a plurality of predetermined positions.

Abstract: A walk-behind, self-propelled lawn mower having a variable speed drive transmission responsive to operator applied forces. The drive transmission is mounted on a frame and comprises gearing operatively connected to an engine and a drive shaft for transmitting forces from the engine to the shaft. A clutching structure including a frictional coupling is coactable with an element of the gearing selectively to provide force transmission to the drive shaft. An actuator structure is controllably connected to the clutching structure and responsive to operator applied forces for controlling the speed at which the lawn mower traverses along a ground surface and to vary the speed proportionally to operator applied forces. The lawn mower also includes a handle pivotally connected to the frame and operatively connected to the actuator structure. The handle is adapted to pivot in response to the operator applied forces.

Abstract: A power unit is provided for attachment to a non-motorized golf cart. The power unit converts the cart to a motorized golf cart of the type used to support and carry a golf bag. The power unit includes a motor, drive wheel assembly and battery support, all attached to a single leg which, in turn, is attachable to the frame of the golf cart by means of a releasable coupling which permits the leg to be oriented selectively, at different angles, relative to the golf cart frame. The releasable coupling also allows the leg to be folded against the frame when the cart is collapsed for transport and storage. A pair of relatively closely-spaced drive wheels, mounted on a unitary axle, supports the forward end of the cart and power unit. The drive wheels contact the ground and a reversible motor pushes or pulls the cart in the direction selected by the user. A control box is mounted on the handle of the golf cart to control the speed and direction of the motor.

Abstract: Several embodiments of electric power assisted bicycles wherein an electrical motor is employed for assisting in the pedaling of the bicycle. The embodiments all include an arrangement for changing the state of the electrical power in response to pushing of the bicycle. In some embodiments, the circuit for the electric motor is opened when the bicycle is pushed rearwardly so as to avoid undue resistance to the pushing as might occur due to the fact that the motor would operate as a generator under this condition and provide an electrical load. In other embodiments, the electric motor is energized upon pushing so as to assist in pushing the bicycle.

Abstract: A walking aid has a supporting framework (2, 3) mounted on two independently driven wheels, (5, 7) driven by respective electric motors (6, 8). The motors are operable by respective switches (10, 11) provided on the framework, such that each wheel can be independently rotatably driven in a clockwise or anticlockwise direction.

Abstract: A control system for regulating starting and various operations of a walk behind and self-propelled trencher. The control system conditions the trencher for forward, neutral, and reverse operation through use of a single control lever mounted for sliding movement in a common plane extending between a neutral/start position and a drive position and thence in another plane to forward or reverse positions to control the direction of the trencher. When the control lever is in a neutral/start position, a power assembly on the trencher is ineffective to drive wheels used to propel the trencher across a field. When the control lever is shifted to a drive position, a drive path is established between the power assembly and at least one of the wheels on the trencher. The control system is configured to allow the power assembly to be started only when the control lever is in a neutral/start position and prevents starting of the power assembly when the control lever is in other than a neutral/start position.

Abstract: A motorized wheelbarrow employing a lightweight and small displacement engine and multi-speed transmission to drive the wheel of the wheelbarrow. The multi-speed transmission permits use of a lightweight and small displacement engine which has been set to operate at a constant predetermined peak power RPM so as to provide power to the wheelbarrow at both low and relatively high rates of speed.

Abstract: A first wheel positioned on a first side of a vehicle is driven by a first reversible hydraulic motor. A second wheel positioned on a second side of the vehicle is driven by a second reversible hydraulic motor. A first valve controls the drive direction and speed of operation of the first hydraulic motor. A second valve controls the drive direction and speed of operation of the second hydraulic motor. An actuator shaft is connected with the first and second valves. Linear movement of the actuator shaft along its axis actuates both of the valves in either a forward or a reverse direction. The actuator shaft is also rotatable about its axis. Rotation of the actuator shaft about its axis actuates one of the valves in the forward direction and the other of the valves in the reverse direction.

Abstract: A self propelled golf bag cart assembly (10) is provided to allow a golfer to walk during a round of golf while having the golf cart (12) and the contents carried by the cart (10). The bag cart (10) includes a plurality of cooperative subassemblies for performing specific functions. The bag cart (10) includes a frame subassembly (16), a first drive wheel subassembly (18), a second drive wheel subassembly (20), a caster subassembly (28), a handle subassembly (30), and a hand grip subassembly (32). Each of the drive wheel subassemblies (18, 20) includes a shoulder (22), a motor (26), and a wheel (24) subassembly. Power and control is provided by directly driving a motor (118) associated with each wheel (24) through an electrical subassembly (38). The electrical subassembly includes a battery (48) and a variety of controlling components situated in a manual control box (34), a main power unit (54) the hand grip (32), and an optional remote control unit (36).

Abstract: A motorized walker includes a base upon which a person can stand, with wheels on the base for rollably supporting the base. Variable speed reversible electric motors are provided for driving the wheels. A walker frame within which a person can stand is detachably mounted on the base, and includes control switches for separately and independently actuating the electric motors such that the person can stand on the motorized walker and maneuver it in any desired direction.

Abstract: A self-propelled golf bag car assembly (10) is provided to allow a golfer to walk during a round of golf while having the golf cart (12) and the contents carried by the cart (10). The bag cart (10) includes a plurality of cooperative subassemblies for performing specific functions. The bag cart (10) includes a free subassembly (16), a first drive wheel subassembly (10), a second drive wheel subassembly (20), a caster subassembly (28), a handle subasembly (30), and a hand grip subassembly (32). Each of the drive wheel subassemblies (18, 20) includes a shoulder (22), a motor (26), and a wheel (24) subassembly. Power and control is provided by directly driving a motor (118) associated with each wheel (24) through an electrical subassembly (38). The electrical subassembly includes a battery (48) and a variety of controlling components situated in a manual control box (34), a main power unit (54) the hand grip (32), and an optional remote control unit (36).

Abstract: A driven shaft is provided having a free end portion upon which a drive wheel is mounted for rotation relative to the driven shaft and for shifting longitudinally therealong between first and second positions. Drive structure is provided for drivingly connecting the driven shaft to the wheel when the wheel is in the first position thereof and which ineffective to maintain the drive connection between the shaft and the wheel when the wheel is in the second position thereof. Structure is provided for yieldingly biasing wheel the wheel toward the first position thereof and the wheel shaft include axially spaced abutment surfaces between which the narrow end of an elongated wedge is disposed, the elongated wedge being mounted from the shaft for longitudinal shifting of the wedge radially of the shaft.

Abstract: An apparatus and method for manipulating and transporting equipment such as electronic equipment racks is engageable with a rack in either its upright position or its horizontal position and is controllably positionable to rotate the engaged rack to a horizontal position for transport and vertical position for installation. The apparatus comprises a horizontal mainframe which is supported on casters and powered by a steerable pallet truck so as to be easily rollable and maneuverable. The mainframe supports a battery-powered drive unit coupled to a first piston manipulator, one end of which is pivotally attached to the mainframe and the other end of which is pivotally attached to a rotatable rack-support mast. The rack support mast unit contains a second piston manipulator one end of which is attached to the support mast and the other of which is attached to a translatable rack engagement subframe having an engagement footplate at one end of the rack support mast.

Abstract: A hydrostatic transmission for a vehicle, such as a commercial walk-behind mower, comprises a fixed displacement pump, first and second reversible hydraulic motors for driving first and second ground engageable wheels, respectively, of the vehicle, and first and second spool valves for controlling hydraulic fluid flow from the fixed displacement hydraulic pump to the first and second hydraulic motors, respectively. The transmission may have a further fixed displacement hydraulic pump arranged in tandem with the first mentioned pump, a fluid pressure operated device and a third spool valve movable between a first position in which hydraulic fluid from the further pump is supplied to the pressure operated device and a second position in which hydraulic fluid from the further pump is supplied to the first and second spool valves to supplement hydraulic fluid from the first mentioned hydraulic pump.

Abstract: An extra-wide self-propelled lawn mower employs twin hydrostatic transmissions to power the left and right rear drive wheels that are situated behind a forward moving deck. Hydrostatic drives have infinitely variable adjustment speed from reverse through neutral, to a maximum forward speed. There are also independent left and right control levers mounted adjacent the hand grips that are coupled through linkages to control levers for the respective hydrostatic transmissions. An engine has its center of gravity situated behind the drive wheel axles to balance the weight of the moving deck. Spring returns associated respectively with the two hydrostatic transmissions return the same to the neutral position when an operator releases the respective control levers.

Abstract: A transport vehicle, particularly for shopping carts in trading establishments, includes a base frame having a U shape as seen in a plan view for embracing a shopping cart at a height substantially equal to that of the lower frame of the shopping cart. The base frame has members with free front ends and a transversely oriented rear drive section. Pivotable brackets are each disposed at a respective one of the free front ends. Guide wheels are each guided in a respective one of the pivotable brackets. A driving wheel is centrally and non-pivotably guided in the drive section. The driving wheel has an integrated mobile driving device.

Abstract: An extra-wide self-propelled lawn mower employs twin hydrostatic transmissions to power left and right drive wheels situated behind a forward mowing deck. There are left and right primary speed control levers adjacent hand grips on the mower hand assembly. These have linkages that include a common pivot shaft and respective spring couplings to control the actuator arms of the hydrostatic transmissions. Secondary speed control levers, in the form of brake levers, are mounted adjacent the right and left hand grips and are non-resiliently coupled to the hydrostatic transmission actuators arms. The secondary levers are squeezed to override the primary speed control and slow the respective transmission for braking or to effect a turn, pivoting about the inside wheel. Squeezing the secondary control lever completely will cause the wheel on that side to reverse, effecting a pivoting at the center of the mower.

Abstract: A crawler-propelled truck includes a chassis frame assembly, an engine mounted on the chassis frame assembly and having a substantially vertical crankshaft, a gear transmission case having an upper portion coupled to the engine and housing a gear transmission operatively coupled to the engine, drive wheels supported on a lower portion of the gear transmission case and rotatable by the engine through the gear transmission, driven wheels rotatably supported on the chassis frame assembly forwardly of the drive wheels, crawlers trained around the drive and driven wheels, and a load carrying table mounted on the chassis frame assembly above the crawlers.

Abstract: A system for motorizing a shopping cart or the like, the system comprising: a) a drive unit including an electric motor and a motor control circuit; b) a manual control member situated close to the push bar and suitable for acting on the control circuit for controlling both forwards and backwards displacement of the cart; c) a transmission between the motor and at least one wheel of the cart; d) a rechargeable storage battery for powering the motor; e) a feed bar suitable for recharging the battery from a fixed electrical charger, said bar having a front end and a rear end such that its front end is suitable for forming an electrical contact with the rear end of the bar of the preceding cart in a row, with the first cart in a row being connected directly to the charger; f) an electrical connection between said bar and the positive terminal of the battery, when said electrical contact is established between the two above-mentioned bars; and g) a permanent electrical connection between ground constituted by the

Abstract: A self-propelled helicopter ground handling dolly (10) comprises a central framework on which are mounted two casters (16) and a fixed powered drive wheel (14), a single lifting arm (22) which lifts a lifting framework (22) designed to engage lifting points on the underside of a skid-equipped helicopter (114), a handle (24) offset from the longitudinal center of the dolly (10) to enable maneuvering said dolly (10) into position under the helicopter (114), and a hand held control (102) that permits the operator to control the forward and reverse motion of the dolly (10) and the lifting motion of the lifting arm (22) from a position near the end of the tailboom (118).

Abstract: A shaft for manually guided lift vehicles and lift loaders provided with a driving mechanism has a steering head at the free end containing gripping handles for steering the vehicle and operating switches for the driving and lifting operations of the vehicle. The steering head comprises two cup elements which are detachably connected with one another. One cup element is fixedly connected with the shaft and serves as the supporting part for the second cup element at which the gripping handles as well as the operating switches are located.

Abstract: A guidebar used on a walk-beside articulated machine having a first machine portion and a second machine portion which swivel about a pivot point. A first bar portion has a first end and a swivel end. The first end is fixably attached to the first machine portion. A swing arm has a first swing arm end and a second swing arm end. The first swing arm end is pivotally attached to the second machine portion. A second bar portion has a first end and a second end. The first end is pivotally attached to the second swing arm end and the second end is pivotally attached to the swivel end of the first bar portion.

Abstract: A "short turn" powered vehicle having a transverse structural mower housing or implement that is used to also vertically stablize the unit. One embodiment uses a self powered mower housing with lateral support wheels which also give lateral support, as do the choice of implements, by means of a vertically restricting hinge in relation to a powered drive wheel; thus the drive wheel is in a floating mode as it gives thurst to the housing or implement, so as to always have traction on uneven ground.On each of the embodiments steering is done by, either a generally centrally located steered front support wheel steered from a rearward operator's seat on the vehicle, or steering being from an operator's seat rearward on the vehicle, by breaking of either of the housing's or implement's lateral support wheels and there being at least one castor type front support wheel or lateral front support wheels located close to the rear support wheels.

Abstract: A portable aircraft moving device comprising a portable electric drill containing a drive shaft extending from the drill output shaft to a worm gear reducer having an output shaft connected to a drive wheel that is mounted temporarily to the front wheel of an airplane above the airplane wheel, the drive shaft located inside a straight hollow support tube attached between the drill and the gear reducer, so that by actuating the trigger on the drill, causes the drive shaft to be turned and produce, through the gear reducer, rotation of the drive wheel on an axis parallel to the axis of the airplane's wheel. Pivotal means are employed to allow the drive wheel to be rotated into contact with the airplane wheel, by lowering the drill, to impart rotation to the airplane's wheel and movement to the airplane.

Abstract: In a self-propelled walking mower having a deck as a machine frame for supporting an engine, mowing cutter and front wheels, a transaxle-type transmission for driving rear wheels is housed at a rear end portion of the deck in a transmission casing an upper half of which is provided by a portion of top wall of the deck and by a peripheral wall which is formed integrally with the deck and projected downwardly from the top wall of deck. The transmission may be assembled in a lower half of the transmission casing, or alternatively in the upper half, and then the two casing halves may be secured together for completing an essential part of the mower drive system. The upper casing half integral with the deck contributes not only to an easy assemblage of the drive system but also to a reduction of weight and size of the mower.

Abstract: A motor-powered lawn mower is described which includes provisions for converting same from a walk-behind mower to a stand-up riding mower. A driven shaft associated with the rear wheels is journaled for rotation at the lower ends of a pair of pivot arms which are hinged to opposed sides of the mower's frame. Also coupled to the pivot arms is a riding platform. When the rear wheel assembly is swung forward relative to the frame, the riding platform is tucked beneath the frame so as not to obstruct the feet of the operator walking behind the mower and guiding its path of travel. By swinging the rear wheel assembly to extend rearward of the frame, the riding platform becomes deployed in a horizontal position so that the operator may stand upon it as he manipulates the controls to steer the vehicle.

Abstract: A dead-man lever control system for apparatus such as a snow blower or lawnmower includes a latch and key arrangement connected to the levers which permits the levers to be operated independently or conjointly, and which also permits one lever to be locked out by the other. Provision may be made for the locked-out lever to over-ride the lock-out by applying a greater than normal force to the lever.

Abstract: A motorized device for aiding the maneuvering of trailers subsequent to detachment from the towing vehicle is presented which comprises a shaft attachable to the drawbar of the trailer and which is adjustable for height. At least one wheel is mounted at the end of the shaft with the axis of the wheel being perpendicular to the shaft. At least one driving device for driving the wheel in rotation about its axis and a swivelling device for swivelling the wheel are also provided.

Abstract: A convertible walking/riding power driven golf cart includes three detachable units; namely, a drive unit having a frame supported on wheels connected to a battery operated motor; a steering and golf bag support unit connected detachably to the drive unit and having releasable golf bag connectors and a handle bar mounting a speed control and a brake control; and a riding unit having a wheel-supported platform connected detachably to the drive unit for adjustment between an operative position extending horizontally rearward from the drive unit for supporting a person on the platform for riding, and a storage position disposed vertically closely adjacent the drive unit to allow a person to walk behind the drive unit while grasping the handle bar. The three units are quickly and easily detached from each other for storage and transport in the trunk of an automobile.

Abstract: A convex pivoting pad mountable to a snow thrower or other handle-directed, small engine equipment and on to which the equipment weight may be shifted to facilitate turning. In one embodiment, the pad is frame-mounted to the equipment by way of a pedestal assembly. In other embodiments, one or more pads are pivotally mounted in relation to the chassis or lever arms to selectively control the required tilt force relative to the equipment wheels. In a further embodiment, a lever-actuated linkage coupled to the drive axle raises/lowers the pad as the opposite wheel drives the snow thrower therearound.

Abstract: A motorized dump-type vehicle is provided having a chassis frame, a gasoline engine mounted on said frame, a dump container pivotally mounted on the front of said frame and a hydraulic system enabling said container to be raised and lowered by a hydraulic cylinder and said vehicle to be driven in either forward or reverse directions and braked by hydraulic drive motors. The hydraulic fluid is cooled by an oil reservoir tank forming a structural part of the frame and positioned such that heat from the hydraulic fluid can dissipate itself in the container and its contents.

Abstract: A vehicle having a length, a front end and a substantially opposing rear end useful for propelling an implement pivotably coupled thereto at or near the front end. The vehicle comprises two driven wheels located at or near the rear end and positioned to rotate in a direction generally parallel to the length of the vehicle; a power system acting to provide power to rotate the two driven wheels; at least one non-steered wheel located at or near the front end, the non-steered wheel being rotatable about an axis which axis is at least partially rotatable; and a seat acting to provide a location at which a human being can sit on the vehicle and control the vehicle. The vehicle is sized so that the human being sitting in the seat is capable of directly steering the pivotably coupled implement.