Abstract: A combined sports shoe and roller skate includes a sole having a chamber in which is mounted a collapsible roller assembly, wherein the roller assembly has a seat pivotally connected with linking rods, positioning rods, rear arms, front arms, rollers and torsion spring at two sides and a control mechanism is mounted on the seat and composed of a locking bolt, an axle, a pawl, a torsion spring, a tension spring and a pushbutton, whereby the sports shoe can be converted into a roller skate as desired simply by depressing a pushbutton and the roller skate can be also converted into a sports shoe by collapsing the roller assembly into a chamber at the bottom of the sole.

Abstract: The invention relates to an array for activating the horn in built-in modular steering wheels, wherein the cover of the airbag that is placed on top of the air bag unit forms part of the steering wheel rim. According to the invention, the air bag unit (5) is fixed to at least one contact of the horn (17) that is connected thereto and is fixed to at least one section of the steering wheel (4). Said section is elastically deformable in the direction of the corresponding mating contact (18). The air bag unit (5) is placed preferably in an elastically deformable section of the air bag cover (2).

Abstract: An electrically operated power steering apparatus for an automotive vehicle having a steering wheel to be operated by the vehicle operator includes a motor and a power supply restricting device. The motor applies a drive force thereof to a torque transmitting system so as to assist a steering torque applied to the steering wheel by the vehicle operator.

Abstract: An actuator for raising and lowering a blade mounted to a vehicle. A winch assembly is mounted to the blade and is powered by the vehicle battery. The motor has a low amperage draw and has a gear reduction unit to provide mechanical advantage. The cable extending from the winch is arranged to have a double pull to provide an additional mechanical advantage.

Abstract: A dolly is provided for facilitating removal and installation of brake drums on vehicles. The dolly includes a frame having a cradle portion for supporting a brake drum. Wheels are rotatably mounted on the frame for moving the frame over a support surface into position beneath a brake drum. A handle projects from the frame for manually manipulating the frame into and out of position relative to the brake drum. An elevating linkage is provided for raising and lowering the frame relative to the wheels to lift and lower the brake drum relative to the vehicle.

Abstract: A training wheel assembly includes an upper frame segment having multiple height adjustment apertures for adjustably attaching the assembly to a bicycle, a lower frame segment pivotally attached to the upper frame segment, wheel rotatably attached to the lower frame segment, and an adjustable strut assembly interconnected between the upper and lower free segments. A first end of a strut assembly is pivotally connected to the upper frame segment and a second end of the strut assembly is pivotally connected to the lower frame segment. The strut assembly includes a hollow sleeve, a spring disposed within the sleeve, and a shaft adjustable relative to one end of the strut assembly so that one end thereof is in contact with the spring to increase or decrease the compression of the spring within the sleeve.

Abstract: In a stair-climbing vehicle for negotiating steps, ledges and stairs comprising a vehicle body having wheel support arms mounted thereon at opposite sides and in spaced relationship so as to be pivotable about a wheel support arm shaft and wheels rotatably mounted on the free ends of the wheel support arms, climbing arms are supported on the vehicle pivotable about the pivot axes of the support arms. The climbing arms are linearly extendable for moving the wheels from one step to the next, one wheel, one wheel support arm and one climbing arm forming together a stair climbing module.

Abstract: A device for attaching to a ladder allows the ladder to function as a hand truck. The device includes a pair of retractable wheels. The retractable wheels can be stored away inside an outer profile of an opened or closed stepladder, so that the wheels do not interfere with a user when the ladder is opened and do not take up space when the ladder is closed. The device may also include a retractable carry platform for holding loads when the ladder is used as a hand truck. A reverse side of the carry platform can serve as a paint bucket support or work surface when the ladder is in use. Both the retractable wheels and the retractable carry platform are attached to the ladder by a frictional engagement which does not violate the structural integrity of the ladder.

Abstract: A hydraulic vehicle drive, particularly for mobile hoisting platforms, has a first pair of wheels drivable by first wheel motors in dependence of a first control valve and a second pair of wheels provided with second hydraulic motors. A switching arrangement short-circuits the second hydraulic motors in the driving-free state and for cooling supplies them with a flushing flow. In the driven state a second control valve, in dependence of which the second hydraulic motors are drivable, is activated, and if required connected with the first control valve. Thus, optionally, the first wheel pair can be driven alone or together with a certain driving output from the second wheel pair.

Abstract: A waterfowl decoy transporting device 10 for use on solid, semi-liquid and liquid surfaces wherein the device includes a four sided slatted enclosure member 40 which is releasably connected to a generally thick rigid flotation member 30 provided with a removable wheel assembly unit 11 including a pair of tall, thin wheel members 20. The flotation member 30 is operatively associated with a towing bar member 50 for towing the decoy transporting device 10 over a variety of surfaces.

Abstract: Disclosed is a brake disc rotor comprising a first disc plate, a second disc plate facing the first disc plate, a plurality of fins arranged in the radial direction of the brake disc rotor between the first and second disc plates, and a plurality of ventilation holes each of which is positioned between neighboring fins of the plurality of fins and communicates a space on the inner circumferential side and a space on the outer circumferential side in the radial direction of the brake disc rotor. The plurality of fins have a plurality of sets each including two long fins and two short fins, one of the two long fins has an expanded part which is expanded in its width direction, the long fins and the short fins are alternately arranged in the circumferential direction of the brake disc rotor in each of the plurality of sets, and the plurality of sets are arranged at equal intervals in the circumferential direction of the brake disc rotor.

Abstract: A power retractable running board assembly for a motor vehicle includes a substantially sealed housing assembly, a running board, a parallel linkage, a gear assembly, and a motor assembly. The running board presents an upper load carrying surface. The gear assembly is disposed in the sealed housing assembly and coupled to an arm of the parallel linkage. The motor assembly is drivingly coupled with the gear assembly and is constructed and arranged to pivot the running board between deployed and stored positions.

Abstract: A manually operated ergonomic wheelchair comprises a pair of levers (10) which are pivotably mounted on said wheelchair and can be operated by the user by hand-grips (12) and/or pedals, so as to cause rotation of the wheels (3) of the wheelchair by a chain transmission (14, 19). Each lever (10) has a reciprocating oscillatory movement and has a lower branch (15, 16) in the form of a fork closed by an arched support (13) having a variable distance from the fulcrum (11) of the lever. The transmission consists of a chain section (14) attached to the two arms (15, 16) of said fork, guided by the arc (13) and meshing with a gear wheel (18) located between the arms (15, 16) of the fork. The gear wheel (18) is coplanar with the plane of oscillation of the chain section (14) and is associated, directly or by a train of driven gears (11, 20), with the hub (6) of the wheel (3) of the wheelchair, one of said gear wheels (18, 20) being a freewheel.

Abstract: A bicycle brake device is coupled to a bicycle frame section, which includes one or more bicycle brake mounting structures. The bicycle frame section can be either a portion of a front fork or rear fork of a bicycle. The brake device is preferably a caliper brake device such as a cantilever brake device, a side pull brake device, or a center pull brake device. The caliper brake device has a pair of brake arms, which are pivotally coupled to either the front fork or rear fork for selectively engaging the rim of the bicycle wheel. In certain embodiments, the bicycle brake mounting structures are U-shaped brackets, which are fixedly coupled to the frame member or members. In other embodiments, the bicycle brake mounting structures are formed by a pair of separate tubular frame members, which are fixedly coupled to the remainder of the bicycle frame section.

Abstract: A safety cover for a trailer hitch which has a tow ball and a draw bar. The cover serves to protect and to cover the trailer hitch and to prevent injury to those working in the vicinity of the trailer hitch. The cover is first comprised of a shell which is dimensioned to be large enough and deep enough to cover both the tow ball and at least a portion of the drawbar. The shell is fabricated from durable material and is configured to have no exposed sharp edges. Inside of the shell is a filler material. The filler material is a malleable substance such as rubber or plastic. The filler material fills the shell and forms a base. The filler material includes a cavity which is shaped to closely receive the tow ball and draw bar of the trailer hitch. This allows the cover to fit over the trailer hitch with minimal play. Finally, a fastener is placed at the base of the filler material proximal to the back side of the of the cover.

Abstract: A tracked suspension for a tractor or other work vehicle is disclosed having an endless belt, a belt tensioner, a drive wheel, and a plurality of idler wheels mounted to a suspension frame or idler carriage, the assembly being arranged such that the belt tension provided by the tensioner is absorbed within the frame and is not transmitted to the axle extending from the tractor that drives the tracked suspension. The tracked suspension can be adjusted by loosening or removing mounting bolts that fix the suspension to beams extending from the vehicle, sliding the suspension toward or away from the vehicle, and tightening the bolts. By absorbing the belt tensioning forces within the tracked suspension itself, rather than transmitting the belt tensioning forces to the axle, the suspension can be more easily adjusted without requiring the removal and replacement of the drive axle.

Abstract: A Gooseneck Trailer Lock that obstructs a trailer hitch coupling mechanism and prevents the attachment to the ball of a towing vehicle. The locking device is inserted into the coupling mechanism, the slide of the coupling mechanism is moved to the closed position causing the top portion of the lock to engage the ½ inch lip on the inside of the mechanism while the body of the lock remains in the 2{fraction (5/16)} inch opening of the slide mechanism, the non-drillable barrel lock is locked and the key removed. The entire coupling mechanism is filled, preventing the insertion of the towing ball, thus preventing an unattached trailer from being attached to an unauthorized vehicle. The locking device is simple, durable, effective, and easy to use.

Abstract: A wheelchair swing-arm is adapted to be pivotally connected to a wheelchair base frame and support a wheelchair drive wheel. A fender is supported in a substantially fixed position relative to the wheelchair swing-arm. A method for attaching a fender to a wheelchair includes the steps of providing a wheelchair having a base frame and a swing-arm pivotally connected to the base frame and a drive wheel motor supported by the swing-arm, and supporting a fender in a substantially fixed position relative to the swing-arm.

Abstract: A sidecar for a bicycle comprises a wheeled frame formed of a single U-shaped tube adapted to be readily attached to a bottom portion of the bicycle frame via a single bracket. The bracket includes an elongated horizontal portion projecting forwardly of the power train of the bicycle for slidably receiving thereon a first end portion of the U-shaped tube. A circumferential slot is defined in the first end portion of the tube for receiving a pin rigidly secured to the elongated portion of the bracket, thereby allowing limited rotational movements of the bicycle frame relative to the sidecar.

Abstract: A mounting and gearing system for power-assisted bicycles comprising a system frame 12 that mounts to brake posts 14 and to an axle clamp bolt 22 of a bicycle 21, an extension arm 3 use extension arm bolts 33 to bolt to an electric motor 1, that has square flanges at each end, so that one corner will pivot on a motor pivot tube 13 on the system frame 12, the extension arm 3 with adjustment slots 23 are used to vary the tension of a primary drive belt 18 that connects a motor pulley 2 and a clutch pulley 4, a clutch sprocket 10 is pressed on a roller clutch 9 that rides on a clutch shaft 8 supported by a pair of support bearings 7 that are sandwiched between a bolster plate 6 and the extension arm 3 using standoffs 5, the clutch sprocket 10 connects to a wheel sprocket 11 via a secondary drive chain 19, the wheel sprocket 11 is connected to a tire 20 via wheel spokes 28 and a wheel hub 27, the tension of the secondary drive chain 19 is adjusted using a support strut 17 that mounts on the standoffs 5 and a supp