Patent ID: 7179037

Claim:
A telescopic captive screw including: a knob for operating the captive screw, a ferrule coaxial with the knob for attaching the captive screw to a first structure, a screw rotatable with the knob and having a threaded portion for engaging a preformed threaded aperture in a second structure, the screw being axially displaceable with respect to the ferrule from a first position to a second position; a spring biasing the screw towards the first position, and at least one sleeve, extending telescopically between the ferrule and the knob, the at least one sleeve having an inner diameter; the knob including a generally cylindrical, downwardly opening recess having an interior diameter for receiving the at least one sleeve, ferrule and the spring, and a generally inwardly extending lip formed at the bottom of the knob for retaining the at least one sleeve.