Accession Number : ADD014835

Title :   Self-Sealing Separation Fastener for Small Confines.

Descriptive Note : Patent, Filed 12 Jun 89, patented 22 Jun 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Moore, Martin E ; Bennett, Robert R

Report Date : 22 Jan 1991

Pagination or Media Count : 5

Abstract : A separable fastener includes a fastener body having a head end and a shank end. The head end defines a generally cylindrical open ended cavity in which a cylindrical punch is disposed. The cavity is sealed and closed by a gas generator that develops an increasing fluid pressure against the punch. The punch is restrained within the cavity by a retaining ring which yields once a preselected gas pressure is reached. The release of the punch causes it to rapidly accelerate in a short distance to impact the shank end of the fastener body. The shank end is thereby sheared from the body with the void created in the body being sealed by the impacting punch.

Descriptors :   FASTENINGS, FLUIDS, GAS GENERATING SYSTEMS, GASES, IMPACT, PRESSURE, SEPARATION, SHORT RANGE(DISTANCE)

Subject Categories : Couplers, Fasteners, and Joints

Distribution Statement : APPROVED FOR PUBLIC RELEASE