Dual function lock/latch device

Details Dual function lock/latch device Dual function lock/latch device

1988-01-19

1988-08-09

Wolfe, Robert L.

Locks

Operating mechanism

Key

70377, E05B 2902

Patent

active

047619775

ABSTRACT:
A dual function lock/latch device selectively operable in a latch configuration or lock configuration comprising an outer housing having a bore formed therethrough including a lock spline and sleeve actuator spline, an inner member having a keyway and cam lock/latch member formed on the outer and inner end portions thereof rotatable between a lock/latch position and an unlock/unlatch position disposed within the bore with a set of sleeve actuator tumblers and a set of locking tumblers disposed longitudinally along the periphery thereof movable from an extended and a retracted position by a key inserted into the keyway, and an intermediate sleeve disposed between the inner member and outer housing including a sleeve actuator slot and a lock slot formed therethrough such that when in the lock configuration and lock/latch position the lock tumblers extend through the lock slot into the lock spline to lock the inner member relative to the outer housing to lock the dual function lock/latch device in the lock/latch position, that when in the lock configuration the insertion of the key into the keyway retracts the set of sleeve actuator tumblers and set of lock tumblers to permit rotation of the inner member from the lock/latch position to the unlock/unlatch position and that when in the latch configuration the set of sleeve actuator tumblers extend through the sleeve actuator slot to permit rotation of the inner member and intermediate sleeve between the lock/latch position and unlock/unlatch position.

REFERENCES:
patent: 1747380 (1930-02-01), Norviel
patent: 2036764 (1936-04-01), Lowe
patent: 2182307 (1939-12-01), Behnke
patent: 2585643 (1952-02-01), Feldmann

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