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Pneumatic valve and regulator

  • US 5,755,213 A
  • Filed: 07/25/1995
  • Issued: 05/26/1998
  • Est. Priority Date: 07/25/1995
  • Status: Expired due to Fees
First Claim
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1. A pneumatic pressure regulator comprising:

  • a housing having an inlet connectable to a source of pressurized air and an outlet connectable to a device utilizing said pressurized air such that a flow path for said pressurized air is established through said housing between said inlet and said outlet;

    a means for adjusting the amount of air flow through said regulator which is located within said housing such that said air flow adjustment means is movable between at least two positions to vary the amount of said pressurized air flowing within said flow path, said positions comprising;

    (i) a first position in which flow of said pressurized air between said inlet and said outlet is substantially unimpeded by said air flow adjustment means; and

    (ii) a second position in which flow of air between said inlet and said outlet is substantially blocked by said air flow adjustment means;

    a means for applying a spring force to said air flow adjustment means located within said housing and configured to mechanically engage said air flow adjustment means to move said air flow adjustment means between said first position and said second position;

    a temperature compensation means located within said housing and in contact with said spring force applying means to counteract changes in said spring force applied to said air flow adjustment means which are caused by variations in ambient temperature;

    wherein said temperature compensation means includes an elastic insert material that expands and contracts with variations in ambient temperature to counteract said changes in said spring force applied to said air flow adjustment means in order to minimize said movement of said air flow adjustment means between said first position and said second position so that said air pressure at said outlet is maintained substantially constant with pressure variations at said air source.

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