Slipping cylinder lock

Details Slipping cylinder lock Slipping cylinder lock

1979-02-14

1983-02-01

Wolfe, Robert L.

Locks

Operating mechanism

Key

70366, 70362, E05B 6300

Patent

active

043708757

ABSTRACT:
A cylinder lock comprising a fixed cylinder housing and therein a turnable cylinder and a lock mechanism locking the cylinder to the cylinder housing. The turning of the cylinder is performed by means of the key of the lock after the key has set the lock mechanism in a cylinder-releasing position. Force transmission from the key to the cylinder is arranged to take part, in a first stage of the function of the lock, through a slipping clutch so arranged that when the turning force of the key exceeds a certain value, the elements enclosed in the cylinder and directly connected to the key are able to slip relatively to the cylinder in the turning direction of the key, in case the key has not set the lock mechanism in its correct cylinder-releasing position.

REFERENCES:
patent: 2151245 (1939-03-01), Swilens
patent: 3587261 (1971-06-01), Berry
patent: 3621685 (1971-11-01), Sargent

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