Patent ID: 6907961

Claim:
Apparatus for retarding translation of one body relative to another body, comprising: a. a first body circumscribing a second body; b. a cylindrical surface with one or more grooves is part of the second body; c. a retainer carried by the first body; d. a first round elastic device, constrained by its elasticity toward the one or more grooves of the cylindrical surface, and confined by the retainer and thereby restrained against longitudinal movement relative to the retainer; e. the first round elastic device being movable between a restrain configuration in which the first round elastic device resides in the one or more grooves of the cylindrical surface to prevent relative translation between the first and second bodies, and a release configuration in which the first round elastic device is distorted and forced out of the one or more grooves of the cylindrical surface to allow relative translation between the first and second bodies, by relative longitudinal movement between the first and second bodies; f. the first round elastic device is distorted and removed from the one or more grooves by radial expansion of the first round elastic device; and, g. a locking sleeve receivable by the retainer with the first round elastic device in the restrain configuration to lock the first round elastic device against moving to the release configuration.