Fail-secure lock system

Details Fail-secure lock system Fail-secure lock system

1985-11-27

1987-09-08

Moore, Richard E.

Closure fasteners

Bolts

Sliding

292144, E05C 112

Patent

active

046919481

ABSTRACT:
A fail-secure lock apparatus includes a normally pneumatically actuated locking bolt that can be manually operated to withdraw the same in the event of a power failure. The apparatus incorporates a standard key operated lockset connected to operate the pneumatic power drive means or, in the event of a power failure, is connected to rotate a cable reel mechanically to effect movement of the locking bolt to the unlocked position.

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