Locks – Operating mechanism – Key
Patent
1990-11-06
1991-06-04
Wolfe, Robert L.
Locks
Operating mechanism
Key
70404, 70419, E05B 2708
Patent
active
050203495
ABSTRACT:
A tumbler pin lock system comprises a lock mechanism and a key. The lock mechanism has an outer tubular casing mounted to a frame of a computer or similar electrical device. The tubular casing has an central through hole for rotatably receiving a locking spindle. The locking spindle includes a driver pin sleeve having a set of bore holes, each for receiving a driver pin. A rotating shaft protrudes from a first side of the driver pin sleeve, and a protrusion with a keyway slot protrudes from a second side of the driver pin sleeve. A tumbler sleeve is provided on the rotating shaft and is fixed to the tubular casing. The tumbler sleeve has a distributed annular set of blind holes, each for receiving a tumbler spring and a tumbler pin, which are alignable with the bore holes in the driver pin sleeve. A shielding ring having an eccentric flange is received in a key-end of the tubular casing to shield some of the driver pins.
REFERENCES:
patent: 3903720 (1975-09-01), Scherbing
patent: 4083211 (1978-04-01), Scherbing
patent: 4111020 (1978-09-01), Scherbing
patent: 4802354 (1989-02-01), Johnson
patent: 4831853 (1989-05-01), Lico
patent: 4858456 (1989-08-01), McGee
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