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Fluid control valve unit

  • US 5,328,152 A
  • Filed: 06/29/1992
  • Issued: 07/12/1994
  • Est. Priority Date: 06/29/1992
  • Status: Expired due to Term
First Claim
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1. A fluid control valve unit for variably controlling the discharge of fluid from a fluid source, comprising:

  • a housing having a wall defining a cavity extending axially therethrough;

    an axially moveable and nonrotatable closure member received for progressive axial and nonrotating movement in said cavity between a closed position and a flow position;

    said closure member including a sealing portion for engagement with said housing to prevent flow of fluid therebetween, an actuation portion for effecting axial movement thereof, and an aperture portion for passage of fluid;

    said closure member being rotatably fixed in said cavity and being axially movable with respect thereto;

    a rotatable and axially non-moveable actuator member in fluid communication with said closure member received for progressive rotating and nonaxial movement in said cavity and including an end extending out of said housing;

    said actuator member having an outer peripheral surface and being located between said closure member and said housing whereby said closure member travels axially over the outer peripheral surface said actuator member during movement between the closed position and the flow position;

    said actuator member being axially fixed in said cavity and being rotatable with respect thereto;

    said actuator member including cam means on said outer peripheral surface for engaging said actuation portion and operative upon rotation of said actuator member to effect progressive axial movement of said closure member towards and away from the closed position to permit flow of an amount of fluid related to the location of said aperture portion relative to said housing; and

    a portion of said closure member overlying a portion of said actuator in all positions of said valve unit.

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