Mechanical linear lock with redundant locking feature

Details Mechanical linear lock with redundant locking feature Mechanical linear lock with redundant locking feature

1988-07-05

1989-11-14

Kashnikow, Andres

Brakes

Rod

188265, 297374, B65H 5910

Patent

active

048800848

ABSTRACT:
A linear friction lock mechanism of the type having a rod axially translatable through a lock housing, at least one locking coil spring axially fixed to the housing and having an inner coil diameter such that the coil spring normally grips the rod against such axial movement, and a lock release mechanism actuatable for unwinding the locking coil spring thereby to free the rod for movement through the housing. This linear lock is improved by providing a backup latch element mounted to the housing and spring loaded towards interlocking engagement with the rod redundantly holds the rod against axial movement through the lock housing independently of the locking coil spring to eliminate creeping of the rod through the spring. Manual and remote cable release mechanisms are optional.

REFERENCES:
patent: 743770 (1903-11-01), Talbert
patent: 2041065 (1936-05-01), Hemphill
patent: 4411339 (1983-10-01), Porter
patent: 4577730 (1986-03-01), Porter
patent: 4685734 (1987-08-01), Brandoli

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