2776results about "Vehicle cranks" patented technology

An off-road bicycle suspension fork includes a pair of fork leg assemblies, each of the leg assemblies having an upper leg telescopingly engaged with a lower leg. A damping assembly is provided in at least one of the legs and includes a cartridge tube connected to the lower leg and a piston connected to the upper tube by a shaft. The piston is telescopingly engaged with the cartridge tube to define a compression chamber below the piston. A control assembly is located at a top portion of the upper leg and is in communication with the compression chamber via a central passage of the shaft. A reservoir is defined between at least a portion of the lower tube and the cartridge. During compression of the suspension fork, fluid flows from the compression chamber, upward through the central passage of the shaft, through the control assembly and to the reservoir.

An adjustable-length seat post has a stanchion with first and second openings. The seat post has a sliding tube, a locking device and an energy transmission device. The sliding tube is guided through the first opening into the stanchion and is displaceable along a longitudinal direction of extension of the stanchion. The sliding tube is movable relative to the stanchion. An overlap between stanchion and sliding tube in a first position is greater than in a second position. The locking device can be transferred between a locking position and a releasing position, wherein in the locking position the sliding tube is fixed. The energy transmission device can transmit energy from an external actuating element to be provided to the locking device for releasing or locking. When the sliding tube is in the second position, the energy transmission device arranged guided from an external actuating element to be supplied through the second opening of the stanchion as far as the locking device.

According to some embodiments, a sensor device for determining forces exerted by a cyclist on a pedal of a bicycle is provided. The sensor device includes a plurality of sensors coupled to a substrate, and wiring coupled to the sensors and the substrate, wherein the sensors, the substrate, and the wiring are housed inside a pedal spindle coupled to the pedal. The sensor device may also be used in a system for improving a pedaling technique of a cyclist.

A control system and method for exercise equipment and the like provides a way to simulate a physical activity in a manner that takes into account the physics of the physical activity being simulated to provide an accurate simulation. According to one aspect of the present invention, the control system and method takes into account the physics of the corresponding physical activity to generate a virtual or predicted value of a variable such as velocity, acceleration, force, or the like. The difference between the virtual or expected physical variable and a measured variable is used as a control input to control resistance forces of the exercise equipment in a way that causes the user to experience forces that are the same or similar to the forces that would be encountered if the user were actually performing the physical activity being simulated rather than using the exercise equipment.

An adjustable assembly for a bicycle includes a first support having an interior surface and a second support slidably positioned within at least a portion of the first support. One of the first support and the second support is adapted to attach to a first bicycle portion, and the other of the first support and the second support is adapted to attach to a second bicycle portion. Further, the second support comprises an expansion portion configured to be moved between an expanded position and a retracted position. The expansion portion is configured to engage the interior surface of the first support when the expansion portion is in an expanded position. In addition, the first support is configured to be selectively moved relative to the second support when the expansion portion is permitted to assume a retracted position. In some embodiments, the first bicycle portion comprises a bicycle frame and the second bicycle portion comprises a bicycle saddle. In other arrangements, the first bicycle portion comprises a fork assembly and the second bicycle portion comprises a handlebar assembly.

Strain gauges are mounted on each crank arm of the bicycle and provide a measure of the torque applied to each crank arm. In a preferred embodiment, strain gauges are mounted on opposite edges of each crank arm, which includes a self-contained power, electrical circuitry, and a wireless transmitter for transmitting the strain measurement information to a main controller. The main controller includes a wireless transceiver for transmitting and receiving data from both the left and right crank arms and external devices. Memory is also included for storing such data for subsequent analysis to determine the individual leg performance of a cyclist during a race or training session.

A bicycle seat tube assembly and seat post can be arranged to reduce vibrations that originate at the bicycle wheel and are transmitted to the rider of the bicycle. Desirably, a saddle is configured to be supported by a seat post which connects to a bicycle frame at the seat tube assembly. An open cavity can be formed between the seat tube assembly and the seat post. The open cavity can be configured to allow the system to act as a spring. Further, spring stiffness can be adjusted to reduce vibrations and increase damping.

A shock absorber having a valve controlling the flow rate of fluid between a compression chamber and a rebound chamber in a housing and separated by a piston. The valve has an orifice component and a blocker component, one of which has a permanent magnet, and the other of which has a magnetically permeable material. Upon the application of sufficient fluid pressure, the blocker component is forced away from the orifice component, despite the magnetic bias that tends to attract the two structures. Because the magnetic force decreases as the two components are spaced farther apart, the shock absorber has excellent performance characteristics. Alternatively, a mechanical spring urges the blocker closed, and magnetic attraction between the blocker and a spaced opener mitigates the increased force of the compressed spring tending to close the valve.