Patent ID: 6439797
Filing Date: 2002-08-27
Classification: F16B,Y10T

Abstract:
A fastener, comprising:(a) an inner collar having an axial bore therethrough and a retractable projection projecting into the axial bore of the inner collar when the fastener is in a locked position and retractable out of the axial bore of the inner collar when the fastener is in a retracted position, the inner collar having a tapered indentation in the outside surface thereof, said tapered indentation being radially spaced away from the retractable projection; (b) an outer collar having an axial bore therethrough, the outer collar placed uniaxially over the inner collar and having a movable protuberance extending into the axial bore of the outer collar, the movable protuberance being shorter axially than the tapered indentation in the inner collar and being positioned in the tapered indentation, the outer collar being slidable along the inner collar, the fastener being in a locked position when the outer collar is in its resting position relative to the inner collar in which the movable protuberance is resting in the deepest portion of the tapered indentation, the fastener being in a retracted position when the outer collar is moved axially out of the resting position; and (c) means for urging the movable protuberance into the axial bore of the outer collar, wherein the movable protuberance and the retractable projection are positioned radially in line when the fastener is in the locked position.