초록 ▼

The wheelchair wheel cover includes a cover hub, radially extending disk and an integral radially outer wall that extends axially from the disk to a cover inboard edge. The cover hub includes a bore that receives a fixed bolt. The bolt passes through a wheel bearing with an inner race and an outer r

The wheelchair wheel cover includes a cover hub, radially extending disk and an integral radially outer wall that extends axially from the disk to a cover inboard edge. The cover hub includes a bore that receives a fixed bolt. The bolt passes through a wheel bearing with an inner race and an outer race. The bolt also passes through the frame of a wheelchair and screws into a nut. When the wheel cover is non-rotating, tightening the nut forces the cover hub against an inboard washer, forces the inboard washer against the inner race and forces the inner race against the frame. If the wheel cover is to rotate a thrust bearing is provided between the head of the axle bolt and the cover hub and the inboard washer is forced toward the outer race. The disk can be flat or sculptured and protects hands and fingers.

대표청구항 ▼

The wheelchair wheel cover includes a cover hub, radially extending disk and an integral radially outer wall that extends axially from the disk to a cover inboard edge. The cover hub includes a bore that receives a fixed bolt. The bolt passes through a wheel bearing with an inner race and an outer r

The wheelchair wheel cover includes a cover hub, radially extending disk and an integral radially outer wall that extends axially from the disk to a cover inboard edge. The cover hub includes a bore that receives a fixed bolt. The bolt passes through a wheel bearing with an inner race and an outer race. The bolt also passes through the frame of a wheelchair and screws into a nut. When the wheel cover is non-rotating, tightening the nut forces the cover hub against an inboard washer, forces the inboard washer against the inner race and forces the inner race against the frame. If the wheel cover is to rotate a thrust bearing is provided between the head of the axle bolt and the cover hub and the inboard washer is forced toward the outer race. The disk can be flat or sculptured and protects hands and fingers. e of each wheel to facilitate steering to the crab angle by pivoting the aircraft about a single point.22. A system for controlling a plurality of maneuverable wheels on a vehicle, comprising: a steering control interface for selecting a steering radius of the vehicle, wherein the radius is measured from a reference point relative to the vehicle;a crab control interface for selecting a crab angle of the vehicle, wherein the crab angle is measured relative to a true heading of the vehicle;a processor responsive to the steering control interface and the crab control interface and adapted to determine a plurality of steering angles, each steering angle corresponding to a maneuverable wheel, based on the steering radius and the crab angle; anda plurality of steering mechanisms responsive to the processor for mechanically turning each respective wheel corresponding to its respective steering angle.23. The system according to claim 22, wherein the processor determines the plurality of steering angles such that each wheel rotates concentrically about the same point relative to the vehicle.24. The system according to claim 22, further comprising a braking control interface, wherein the processor is responsive to the braking control interface and determines the steering angles such that at least two wheels rotate concentrically about dissimilar points relative to the vehicle.25. The system according to claim 22, wherein the steering control interface comprises a first rotating hand wheel and the crab control interface comprises a second rotating hand wheel.26. A method of controlling a plurality of maneuverable wheels on a vehicle comprising: providing a user defined steering radius of the vehicle, wherein the steering radius is measured from a reference point relative to the vehicle;providing a user defined crab angle of the vehicle relative to a true heading of the vehicle, based on the steering point;calculating a plurality of steering, angles, each steering angle corresponding to a maneuverable wheel, based on the steering radius and the determined crab angle of the vehicle; andsteering each respective wheel to its respective steering angle.27. The method according to claim 26, wherein each steering angle is calculated such that each wheel rotates concentrically about the same point with respect to the reference point.28. A method of controlling a plurality of maneuverable wheels on a vehicle, comprising: providing a user defined steering point relative to the vehicle;determining a steering radius of the vehic