Changeable key cylinder exposed shackle padlock

Details Changeable key cylinder exposed shackle padlock Changeable key cylinder exposed shackle padlock

1987-05-27

1988-10-11

Wolfe, Robert L.

Locks

Portable

Padlocks

70 52, 70369, E05B 6722

Patent

active

047761873

ABSTRACT:
A changeable key cylinder padlock including a padlock casing, a shackle moveable between a lower locking position and a upper release position, the casing having a central substantially cylindrical cavity therein located between the sockets shaped to receive and removably house a key lock cylinder. The lock cylinder located in the plug cavity has a first key position and is operable by a operator key and control key to rotate to second and third key positions respectively. Locking spheres are positioned when the lock cylinder occupies the first key position to hold the shackle in the lower locking position and release the shackle at the second and third key positions for movement to said upper release position. An interlock plunger and pin are intercoupled with the lock plug normally occupying a first interlock position allowing key rotation of the cylinder member to and between the key positions and movable when the cylinder member occupies the second key position and the shackle is moved to said release position to assume a second interlock position restraining the cylinder member against return movement to the first key position to restrain the key against removal from the lock cylinder.

REFERENCES:
patent: Re29643 (1978-05-01), Berry et al.
patent: 2457650 (1940-12-01), Dyson
patent: 3710603 (1973-01-01), Miller
patent: 3713309 (1973-01-01), Miller
patent: 3785182 (1974-01-01), Van Lahr
patent: 3882699 (1975-05-01), Flack et al.
patent: 4241594 (1980-12-01), Miller

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