Power control apparatus for a sliding door

Details Power control apparatus for a sliding door Power control apparatus for a sliding door

1996-12-20

1999-12-28

Nguyen, Hoang

Motors: expansible chamber type

With motive fluid valve

Relatively movable serial valves

91461, F15B 1108

Patent

active

060066504

ABSTRACT:
Control apparatus is provided for pneumatically operating a sliding door on a marine vessel. A dual pneumatic system provides for a first pressure to operate the switching mechanisms of the control apparatus, while a second lower pressure provides for operation of a pneumatic cylinder to achieve door travel. Operation of the door may be controlled from either side of the door. Upon loss of pneumatic pressure, the control apparatus provides for relieving of the pressure to allow manual operation of the door. In a manual state of operating, flow controls are provided to regulate door travel in accordance with external force applied to the door. Controlled low pressure maintains the door in an open or a closed position.

REFERENCES:
patent: 4479678 (1984-10-01), Sharp
patent: 4489640 (1984-12-01), Olson
patent: 4882876 (1989-11-01), Daugirdas
patent: 5184535 (1993-02-01), Kimura
patent: 5349151 (1994-09-01), Eisbrenner et al.

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