Locks – Operating mechanism – Key
Patent
1993-04-01
1994-06-07
Gall, Lloyd A.
Locks
Operating mechanism
Key
70418, 292150, E05B 2300
Patent
active
053178904
ABSTRACT:
A latch assembly for door locks. The latch assembly has (A) a box-shaped frame having two parallel plates each having a rectilinear slot, a curved slot with a middle section, (B) a first terminal section, (C) a second terminal section having a first shoulder and a second shoulder and (D) a hole for receiving a lock core. A dead bolt has (E) a first portion which is pressed by a finger extending from the core for retracting the dead bolt into the box-shaped frame, (F) a second portion which is pressed by the finger for moving the dead bolt out of the box-shaped frame, (G) a connection coupling the first portion with the second portion, (H) a recess extending in the connection, and (I) a passage transversely extending through the connection. A pin extends through the passage formed in the detent and its two ends are slidably received in the rectilinear slots. A detent has (J) a first portion slidably received in the recess, (K) a second portion and (L) a passage transversely extending through the second portion. A pin extends through the passage formed in the detent and its two ends are slidably received in the curved slots. A spring is compressed between the connection and the second portion of the detent. The ends of the pin are against the first shoulders when the finger is disengaged from the dead bolt and the spring will press the pin to further slide to be sited against the second shoulders.
REFERENCES:
patent: 1418290 (1922-06-01), Deeds
patent: 2660875 (1953-12-01), Jewett et al.
patent: 3011817 (1961-12-01), Eads
patent: 3026703 (1962-03-01), Welch
patent: 4848118 (1989-07-01), Tesone
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