×

STRAIGHT-BORE BACK PRESSURE VALVE

  • US 20110011575A1
  • Filed: 03/19/2009
  • Published: 01/20/2011
  • Est. Priority Date: 04/09/2008
  • Status: Active Grant
First Claim
Patent Images

1. A system, comprising:

  • a back pressure valve, comprising;

    a body;

    a plunger disposed internal to the body; and

    a friction member disposed about the exterior of the body, wherein the friction member is configured to expand radially to contact an internal surface of a bore.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×