Valve and cylinder-actuated lock controlled thereby

Details Valve and cylinder-actuated lock controlled thereby Valve and cylinder-actuated lock controlled thereby

1977-09-26

1979-10-02

Bonck, Rodney H.

Closure fasteners

Bolts

Sliding

70129, 70275, 91433, 137106, E05B 5100, F16K 1107

Patent

active

041696166

ABSTRACT:
A lock located within a door has a bolt that is extended and retracted by a double acting air cylinder. A single air line extends from the door frame and into the door where it is connected with a valve having two discharge lines that lead to opposite ends of the cylinder. To energize the cylinder and move the lock bolt, a charge of pressurized air is directed to the valve which in turn directs it to one end of the cylinder. The charge of air further causes the valve to reset itself so that the next charge will be directed to the opposite end of the cylinder. Consequently, with successive charges of air the piston rod of the cylinder and the lock bolt move in opposite directions.

REFERENCES:
patent: 1085058 (1914-01-01), Messick
patent: 2298457 (1942-10-01), Berges
patent: 2550723 (1951-05-01), Ross
patent: 2770222 (1956-11-01), Anderson
patent: 3026676 (1962-03-01), Wenzel et al.
patent: 3113590 (1963-12-01), Olson
patent: 3162097 (1964-12-01), Allen et al.
patent: 3722525 (1973-03-01), Epple
patent: 3811458 (1974-05-01), Kuhnelt
patent: 3850082 (1974-11-01), Nussbaumer
patent: 3893723 (1975-07-01), Boule

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