摘要:
A brake mechanism includes an input, a chassis, a lock and a release mechanism. The input is an axially extending input having first and second ends. The chassis interfaces with the input such that the input is movable relative to the chassis. The lock is coupled to the chassis for constraining movement of the input relative to the lock. The release mechanism is coupled to the lock and is responsive to a force applied relative to the input and the chassis such that when the force is greater than a release force level the release mechanism allows the lock to disengage the input and such that when the force is less than the release force level the release mechanism does not allow the lock to disengage the input.
摘要:
A brake mechanism includes an input, a chassis, a lock and a release mechanism. The input is an axially extending input having first and second ends. The chassis interfaces with the input such that the input is movable relative to the chassis. The lock is coupled to the chassis for constraining movement of the input relative to the lock. The release mechanism is coupled to the lock and is responsive to a force applied relative to the input and the chassis such that when the force is greater than a release force level the release mechanism allows the lock to disengage the input and such that when the force is less than the release force level the release mechanism does not allow the lock to disengage the input.
摘要:
A positioning device includes first, second and third elements. The first element includes a cross-linked thermoplastic and the second element is non-circular and configured adjacent a first side of the first element, and configured for relative rotation with the first element about an axis. The third element is configured adjacent a second side of the first element. The first, second and third elements are configured such that a first compressive strain amount is induced on the first element while there is no relative rotation between the first and second elements and a second compressive strain amount is induced on the first element while there is relative rotation between the first element and the second element. The second compressive strain amount is at least 3 times higher than the first compressive strain amount.
摘要:
A positioning device includes first, second and third elements. The first element includes a cross-linked thermoplastic and the second element is non-circular and configured adjacent a first side of the first element, and configured for relative rotation with the first element about an axis. The third element is configured adjacent a second side of the first element. The first, second and third elements are configured such that a first compressive strain amount is induced on the first element while there is no relative rotation between the first and second elements and a second compressive strain amount is induced on the first element while there is relative rotation between the first element and the second element. The second compressive strain amount is at least 3 times higher than the first compressive strain amount.