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Regulator

  • US 4,887,638 A
  • Filed: 08/11/1988
  • Issued: 12/19/1989
  • Est. Priority Date: 08/11/1987
  • Status: Expired due to Term
First Claim
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1. A pressure regulator comprising:

  • a casing, a first chamber and a second chamber defined in said casing and separated by a first regulating piston movable during the pressure-regulating operation for varying the size of said chambers and a permanently open channel in said piston providing a fluid communication between said first and second chambers;

    a high-pressure chamber disposed beneath the bottom of said second chamber and connectable to a gas container;

    a first aperture extending in the bottom of said second chamber;

    a high-pressure piston disposed in said high-pressure chamber and having one end projecting into said second chamber through said first aperture and being displaceable in its longitudinal direction through said first aperture;

    a second aperture provided in said projecting end of said high-pressure piston;

    a throttle device located between said high-pressure chamber and said second chamber and including means provided in said second aperture and cooperating with said first regulating piston at a first end facing said second aperture;

    a fluid connection in said high-pressure piston between said second aperture and the outside of said high-pressure piston in said high-pressure chamber;

    a first spring member, which urges said high-pressure piston towards the bottom of said high-pressure chamber;

    a second spring member which urges said first regulating piston in the direction away from said means in said second aperture; and

    means for deactivation of said regulator provided in the upper wall of said first chamber cooperating with a second end of said first regulating piston.

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