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1447 results about "Spoke" patented technology

A spoke is one of some number of rods radiating from the center of a wheel (the hub where the axle connects), connecting the hub with the round traction surface. The term originally referred to portions of a log that had been riven (split lengthwise) into four or six sections. The radial members of a wagon wheel were made by carving a spoke (from a log) into their finished shape. A spokeshave is a tool originally developed for this purpose. Eventually, the term spoke was more commonly applied to the finished product of the wheelwright's work, than to the materials he used.

Battery powered stair-climbing wheelchair

A self-propelled battery-powered wheelchair replaces an ordinary wheelchair and provides improved access to homes. The wheelchair includes stair climbing, slope climbing, and reclining while requiring only minimal driver skill and strength. Operation on level ground is similar to the operation of a conventional wheelchair. Support for normal operation is provided by a rear caster and wheels on the front corners. Its compact width and length enable negotiating narrow doorways and turning in small spaces. To ensure stability on stairs, moveable skids are mounted to the four corners of the wheelchair. Parallelogram linkages move the front skids down and forward during climbing. Another parallelogram linkage moves the caster and rear skids up and at an angle during climbing. The wheelchair is steerable on stairs as needed to align with the stair path and accommodate slightly spiraling stairs. The wheelchair accommodates stair steps of different riser heights and tread lengths. A pair of spoked or spider wheels with small wheels at the ends of the spokes are rotably mounted to the sides of the wheelchair. The spider wheels engage the stairs to propel and stabilize the wheelchair during climbing of stairs. Methods are provided to monitor and control the pitch attitude of the wheelchair and nearness of wheelchair supporting components to the stairs. Motion and control are provided by electric motors, sensors, a computer, and driver inputs. Propulsion power for conventional level operation, slope climbing, and stair climbing operation is transmitted through the same motors and wheels.

System and method for generating electric power from a rotating tire's mechanical energy

A tire assembly with integrated power generation features includes one or more piezoelectric devices configured to generate electric charge therein upon being subjected to mechanical strains associated with flexure of tire or wheel components. The piezoelectric device may be incorporated in a variety of tire structures and in many different locations. In pneumatic tire structures, the piezoelectric device and related electronics may be embedded in crown or sidewall locations among such selected components as the exterior tread portion, first and second steel belts of a belt package, carcass, cap ply portion, inner liner, zone base, etc. The piezoelectric device with optional rubber casing may also be attached to such locations as the inner liner and tire exterior. Piezoelectric devices may also be integrated with a tire and safety support combination that is configured to operate in an extended mobility mode when the tire structure loses air pressure. Piezoelectric devices may alternatively be integrated with a non-pneumatic structurally supported tire such as one including a reinforced annular band, a plurality of web spokes extending transversely across and radially inward from the annular band, a mounting band at the inner end of the web spokes and a tread portion disposed on the annular band.

Spoke type flexible mechanical arm based on rope driving

A spoke type flexible mechanical arm based on rope driving comprises a base, an arm body mechanism, an end effector and three driving ropes. The arm body mechanism is formed by connecting a plurality of joint units in series, one end of the arm body mechanism is fixed to the base through a connecting disc, and the other end, namely the tail end, of the arm body mechanism is connected with the end effector. The three driving ropes are evenly distributed in the circumferential direction, one end of each rope is fixed to the tail end of the arm body mechanism, and the other end of the rope sequentially penetrates through rope passing holes of all the joint units to be connected to rollers of a motor in the base. Each joint unit comprises an outer frame connecting rack, an inner frame connecting rack, a sliding sleeve, a pull strip and corresponding clamp nuts, wherein the outer frame connecting rack and the inner frame connecting rack are connected through the pull strip, so that the spoke type joint unit is formed. The spoke type flexible mechanical arm based on rope driving has the advantages of being low in arm body weight, high in load and good in maneuverability, the flexibility of the flexible mechanical arm is guaranteed, and the using range of the flexible mechanical arm is expanded.
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