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RECIPROCATING COMPRESSOR OR PUMP AND A PORTABLE TOOL POWERING SYSTEM INCLUDING A RECIPROCATING COMPRESSOR

  • US 20070292282A1
  • Filed: 06/08/2007
  • Published: 12/20/2007
  • Est. Priority Date: 06/08/2006
  • Status: Abandoned Application
First Claim
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1. A reciprocating compressor or pump comprising:

  • a hollow cylinder;

    a piston mounted within the cylinder for limited reciprocal movement therealong;

    a drive system connected to the piston and operable to drive the reciprocal movement thereof;

    intake and exhaust valves associated with the cylinder and operable to allow passage of fluid into the cylinder from a fluid supply outside the cylinder and subsequent discharge of the fluid from the cylinder under exertion of pressure on the fluid in the cylinder by the piston during movement toward a fully extended position thereof furthest from the drive system;

    wherein the intake valve comprises;

    a valve seat comprising a projection extending into a space within the hollow cylinder between a sealing engagement of the piston with the cylinder and a distal end of the cylinder opposite an open end thereof through which the piston and the drive system are connected;

    a passage extending through the valve seat with an opening of the passage being defined on the projection to fluidly communicate the fluid supply outside the cylinder with the space within the hollow cylinder between the sealing engagement of the piston with the cylinder and the distal end of the cylinder; and

    a resilient band disposed circumferentially about the projection, the band being resiliently stretchable about the projection by a difference in pressure between the fluid supply outside the cylinder and the space within the hollow cylinder between the sealing engagement of the piston with the cylinder and the distal end of the cylinder.

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