Lock cylinder

Details Lock cylinder Lock cylinder

1991-04-19

1993-03-16

Luebke, Renee S.

Locks

Operating mechanism

Key

70372, 70379R, 70380, 70461, E05B 1500, E05B 1704

Patent

active

051933721

ABSTRACT:
The lock cylinder with an external housing accommodates, on its rear face, a closure element acting upon a mortise lock or the like and with an exchangeably inserted core unit the casing of which contains housing pins as tumblers and a cylinder core equipped with a key channel, said cylinder core also receiving core pins as tumblers and being connected merely in a plug-in manner to coupling pins which issue from said closure element and project freely into a socket in said external housing serving for insertion of said core unit, wherein engagement of said coupling pins extends only over a rear region, which is free from key channels, of said cylinder core.
Also provided is a tool for cutting coupling pins on lock cylinders, which is designed as a gripper with two shearing jaws which are located axially in series and rest laterally adjacently to or in a carrying mandrel such that one of said shearing jaws is arranged rigidly on said carrying mandrel resting on one gripper arm and the second of said shearing jaws connected to a second gripper arm is rotatably mounted behind it in said carrying mandrel.

REFERENCES:
patent: 1564463 (1925-12-01), Best
patent: 1693028 (1928-11-01), Gage
patent: 2276655 (1942-03-01), Jacobi
patent: 4109496 (1978-08-01), Allemann et al.
patent: 4843852 (1989-07-01), Foshee et al.
patent: 4926670 (1990-05-01), DeForrest, Sr.

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