SELF-ADJUSTING DEICING PAD CONTROL VALVE

Title:

SELF-ADJUSTING DEICING PAD CONTROL VALVE

Document Type and Number:

Japanese Patent JPS62255674

Kind Code:

A

Abstract:

A self-regulating vacuum control valve (20) with a needle valve (47) operating in a narrow central bore (22) that regulates the flow of pressurized air from a pressure source into such narrow central bore for passage and discharge from an enlarged bore (23). A vacuum is pulled in passageways in such enlarged bore which exert a vacuum pull on a control chamber and on one end of a disphragm means (37). The diaphragm means is connected to the needle valve and has its one end subjected to atmospheric pressure. Such diaphragm and needle valve are spring biased to increase the air flow past such needle valve in opposition to the vacuum pull on such diaphragm. Such spring bias is adjustable to provide a predetermind vacuum pull on the control chamber that can be connected to a deicer pad for maintaining a predetermined vacuum pull thereon.

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Inventors:

RONARUDO UEIN FUIRITSUPUSU ZA

Application Number:

JP3933087A

Publication Date:

November 07, 1987

Filing Date:

February 24, 1987

Export Citation:

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Assignee:

GOODRICH CO B F

International Classes:

B64D15/16; F16K17/30; B64D15/18; (IPC1-7): B64D15/16; F16K17/30

Attorney, Agent or Firm:

Aoki Akira

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