Waterproof cover for a pneumatic actuator

Details Waterproof cover for a pneumatic actuator Waterproof cover for a pneumatic actuator

1991-01-08

1992-04-07

Look, Edward K.

Motors: expansible chamber type

With motive fluid valve

Relatively movable inlet and exhaust valves for single...

91459, F15B 13044

Patent

active

051017091

ABSTRACT:
A pneumatic actuator comprising a housing asembly (1, 2) and a diaphragm (7) defining a diaphragm chamber (6) which is in communication with the exterior through an exhaust and a suction conduit (1c, 1d). Solenoid valves (8, 9a, 9b) for opening and closing the conduit (1c, 1d) are mounted to the housing (1) and are covered by an outer cover (10) attached to the housing (1). The housing (1) has a raised outer surface (1e) which is brought into contact with the cover (10) for substantially preventing ingress of moisture. The raised outer surface (1e) of the housing (1) also has a groove (13) for collecting and exhausting moisture passed through the clearance under the outer cover (1) by the capillary action.

REFERENCES:
patent: 3500722 (1970-03-01), Franz et al.
patent: 4437386 (1984-03-01), Baumgartner
patent: 4559864 (1985-12-01), Sakakibara et al.
patent: 4756234 (1988-07-01), Anderson
patent: 4799418 (1989-01-01), Takahashi et al.
patent: 4889033 (1989-12-01), Onishi et al.

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