Punch type release lock
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 8, 1983
Issued Date -
N/A
app pub date -
May 7, 1979
filing date -
Apr 6, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A punch type release lock intended for use primarily in retaining load supports such as pallets in locked position in an aircraft. The lock comprises a detent mechanism which is inserted into a recess preferably at the side of the load support. A preferred form of detent mechanism comprises a pair of relatively movable elements, at least one of which is pivoted. The elements include abutments which are movable apart as the elements are inserted into the recess. When a load is applied to the pivoted detent, as for example, by a parachute extracting system, movement of the element in a direction to withdraw the element to release the load support is prevented by a load cell comprising a fuse plate and punch, in which the punch is prevented from movement by the fuse plate until attainment of a predetermined load on the pivoted detent element. At the predetermined load, the punch penetrates the fuse plate and upon penetration of the fuse plate, the punch is relatively freely movable to effectively permit the load support to move the pivoted detent element to completely release the load support.
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