Lock with key isolation using transfer tumblers

Details Lock with key isolation using transfer tumblers Lock with key isolation using transfer tumblers

1987-07-09

1989-01-10

Wolfe, Robert L.

Locks

Operating mechanism

Key

70419, E05B 2902

Patent

active

047964472

ABSTRACT:
This specification describes a lock where a key is inserted into a key cylinder and where the key sets a series of transfer tumblers. The tumblers project from the key cylinder, and the tumblers, in turn, set a series of lock opening elements into their prescribed positions. As the key-cylinder is rotated the transfer tumblers are moved out of contact with the elements. Only at this time can the lock be opened, provided that the elements had been correctly set.

REFERENCES:
patent: 4485640 (1984-12-01), Rabinow
patent: 4599877 (1986-07-01), Rabinow

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