Pneumatic actuating arrangement, especially for central locking

Details Pneumatic actuating arrangement, especially for central locking Pneumatic actuating arrangement, especially for central locking

1978-06-01

1981-06-16

Cohen, Irwin C.

Motors: expansible chamber type

Fluid supply through diverse paths to single expansible chamber

Activation of one path disables second path

91 6, 70264, 13762521, 13762569, 180289, E05B 6538, F15B 1304

Patent

active

042730279

ABSTRACT:
A pneumatic actuating arrangement for to and fro movements, especially of a central locking system for motor vehicles, with an excess pressure source and with a vacuum source and with at least one pneumatic working device whose working chamber is adapted to be selectively connected to the excess pressure source or to the vacuum source by way of a shifting valve shiftable between two end positions. An intermediate for the shifting valve is provided in which position the shifting valve becomes temporarily effective during the transition from the one end position into the other end position so that the working chamber is conected to the atmosphere.

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patent: 3111184 (1963-11-01), Oishei
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patent: 3831489 (1974-08-01), Woo
patent: 4116218 (1978-09-01), Acre et al.
patent: 4181191 (1980-01-01), Hoffman et al.

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