Hook latch

Details Hook latch Hook latch

2007-10-30

2007-10-30

Barrett, Suzanne Dino (Department: 3676)

Locks

Special application

For closures

C292S029000, C292S047000, C292S109000

Reexamination Certificate

active

11108512

ABSTRACT:
A hook latch for fastening and unfastening a closure member to a keeper in a latched position. The hook latch is moveable between the latched position and an open position. The hook latch comprises a rotation means which preferably comprises a knob connected to a cam shaped protuberance which acts upon an actuator plate and a locking plate. Upon rotation of either the knob or the key which is inserted in a lock cylinder which has a locking ring having a cam-shaped protuberance, the cam-shaped protuberances displace both the actuator plate and the locking plate.

REFERENCES:
patent: 441674 (1890-12-01), Kubler
patent: 829180 (1906-08-01), Sweet
patent: 1284540 (1918-11-01), Takimoto
patent: 1793254 (1931-02-01), Shann
patent: 3019043 (1962-01-01), Woodworth et al.
patent: 3532373 (1970-10-01), Poe
patent: 3561802 (1971-02-01), Brockway
patent: 3904229 (1975-09-01), Waldo
patent: 5221115 (1993-06-01), Takimoto
patent: 5520423 (1996-05-01), Finkelstein et al.
patent: 5573287 (1996-11-01), Takimoto
patent: 6942259 (2005-09-01), Marzolf et al.

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