Locks – Portable – Padlocks
Patent
1982-04-01
1985-04-23
Wolfe, Robert L.
Locks
Portable
Padlocks
70 15, 70417, E05B 6300, E05B 6736
Patent
active
045121656
ABSTRACT:
High security lock assembly adapted for locking two flanges together. The lock assembly includes a lock body having flange retaining walls which define a flange receiving opening. A latch bolt is provided which is slidably mounted transverse of the flange receiving opening for locking to the flanges when they are disposed within the flange receiving opening. A removable shield is provided for removably attaching to the lock body for covering the flange receiving opening thereby preventing external access to the latch bolt when the lock assembly is locked to the flanges. The lock assembly further includes a lock cylinder and associated lock cylinder housing wherein the lock cylinder housing cannot be removed from the lock body except upon special key actuated release. An acid actuated relock mechanism is also provided for blocking movement of the latch bolt when acid is applied in attempts to overcome the lock assembly.
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patent: 3111022 (1963-11-01), Maynard
patent: 3422643 (1969-01-01), Foote
patent: 3626729 (1971-12-01), Fane
patent: 3769821 (1973-11-01), Randel
patent: 3820360 (1974-06-01), Best
patent: 3855826 (1974-12-01), Hori
patent: 3996774 (1976-12-01), Best
patent: 4112715 (1978-09-01), Uyeda
patent: 4222251 (1980-09-01), Uyeda
La Gard, Inc.
Wolfe Robert L.
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