Abstract: A cam assisted centrifugal brake or clutch system provides increased mechanical advantage to improve the output torque relative to prior art devices such as leading brake shoes. The brake or clutch engagement is cammed radially outwardly to engage a brake housing in one direction and guided to a disengaged position in the other direction. Centrifugal forces retain the brake in the disengaged position. Embodiments of the present invention are applied as a backspin braking system that is incorporated into a drive head for a progressing cavity pump drive system.

Abstract: A bicycle brake apparatus comprises a securing bracket with an axle opening dimensioned to receive a bicycle wheel hub axle therethrough, a braked member that has a braking surface and is adapted to rotate with a bicycle wheel hub rotatably supported by the hub axle, a braking member adapted to contact the braking surface, and an operating unit that selectively causes the braking member to contact the braking surface. A locking unit is structured for attachment to the securing bracket, wherein the locking unit extends in an axial direction of the hub axle and is dimensioned to nonrotatably engage the bicycle frame radially inwardly of a rotating portion of the brake apparatus.

Abstract: A braking mechanism for actuating a supplemental brake, used in association with a pedal-actuated brake, which increases total brake effectiveness and increases reliability through redundancy as a result of the coaster brake functioning as a back-up to a failed supplemental brake. A brake lever arm is adapted to cooperate with a coaster brake and a bicycle frame to engage a brake cable and operate the supplemental brake when the coaster brake is engaged. During assembly, the brake lever arm is allowed to rotate about an axle, but is limited in such rotation to a selected degree by placement of a limiter cam. Once installed, a distal end of the brake lever arm is permitted limited rotation with respect to the bicycle. A brake cable secured between the brake lever arm distal end and a supplemental brake is disposed linearly a distance sufficient to actuate the supplemental brake.

Abstract: A bicycle hub includes a hub axle and a hub shell including a first tubular member having a first hub flange secured thereto and a separate second tubular member having a second hub flange secured thereto. Bearings are disposed between the hub shell and the hub axle for rotatably supporting the first tubular member and the second tubular member relative to the hub axle. A generator mechanism is housed in the first tubular member and adapted to generate electricity by rotation of the first tubular member relative to the hub axle, and a brake force adjusting mechanism is housed in the second tubular member and adapted to limit a maximum damping force of a brake.

Abstract: A drive system for a velocipede, such as a tricycle, which includes forward and reverse pedaling capabilities as well as coasting and braking capabilities.