Locks – Operating mechanism – Using a powered device
Patent
1979-02-05
1981-02-17
McCall, James T.
Locks
Operating mechanism
Using a powered device
70356, 70365, 70386, 70421, 70358, E05B 904, E05B 4700
Patent
active
042507251
ABSTRACT:
The plug of a cylindrical lock includes at each side of its key channel a blind boring communicating with a conical recess in an arresting plate secured to the housing of the lock. The blind boring intersects cylindrical rotary control members arranged for rotation in the plug and each having a diametrical passage coinciding in one angular position thereof with the blind boring. A series of arresting balls is arranged in the blind boring and in respective passages in such a manner as to resume in the aligned position of the members a blocking position in which the terminal ball is in engagement with the conical recess. During the rotation of the plug by a correct key the arresting balls are shifted by the inclined surfaces of the conical recess into the blind boring and the plug is free to rotate. By the insertion of a wrong key at least one passage is misaligned and consequently the terminal arresting ball cannot be removed from its arresting recess.
REFERENCES:
patent: 347445 (1886-08-01), Sherman
patent: 1135027 (1915-04-01), Kohlberger
patent: 1513718 (1924-10-01), Morehouse
patent: 2023847 (1935-12-01), Liss
patent: 2287175 (1942-06-01), Heyer
patent: 2393428 (1946-01-01), Stroud
patent: 2460615 (1949-02-01), Andrew
patent: 3499303 (1970-03-01), Spain
patent: 3570287 (1971-03-01), Hallmann
patent: 3654782 (1972-04-01), Heimann
patent: 3928993 (1975-12-01), Epstein
patent: 3935720 (1976-02-01), Boving
patent: 4084416 (1978-04-01), Prunbauer
Evva Werk Spezialerzeugung von Zylinder- und Sicherheitsschlosse
McCall James T.
Pietruszka Carl F.
Striker Michael J.
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