Security lock

Details Security lock Security lock

1973-07-13

1976-01-20

Frazier, Roy D.

Closure fasteners

Bolts

Sliding

70280, 160201, 292201, E05C 306

Patent

active

039333825

ABSTRACT:
Electrically operated lock for a closure, such as a truck door, characterized by a bolt movable between locked and unlocked positions and latched against movement in both positions, the bolt movement being under control of a two position switch and other switches which disconnect electrical energization when the bolt moves to either position. The apparatus is located at an inaccessibly position, preferably inside the truck, to prevent tampering therewith from outside the truck.

REFERENCES:
patent: 1343731 (1920-06-01), Kyle
patent: 1629731 (1927-05-01), Peterson
patent: 1948217 (1934-02-01), Goodwin, Sr.
patent: 2257103 (1941-09-01), Brokering
patent: 2322088 (1943-06-01), Black
patent: 3234766 (1966-02-01), O'Brien
patent: 3426829 (1969-02-01), McDaniel et al.
patent: 3576119 (1971-04-01), Harris
patent: 3643479 (1972-02-01), Solow
patent: 3751088 (1973-08-01), Schlage

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