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Non-spill connect under pressure coupler

  • US 10,156,310 B2
  • Filed: 09/12/2016
  • Issued: 12/18/2018
  • Est. Priority Date: 11/18/2015
  • Status: Active Grant
First Claim
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1. A non-spill female coupler for quick connect/disconnect coupling with a corresponding male coupler, the non-spill female coupler comprising:

  • a housing having an internal bore with an open forward end configured to receive the male coupler, and a supply passage for supplying pressurized fluid to the internal bore;

    a valve body slidably movable in the internal bore, the valve body defining an internal main cavity that opens to the forward end of the internal bore, and an inlet passage through the valve body for communicating the pressurized fluid from the supply passage to the main cavity;

    a valve member slidably movable in the valve body toward and away from a valve seat, the valve member having a front face, wherein the front face of the valve member is configured to engage a corresponding front face of the male coupler;

    a face sleeve disposed radially outwardly of the valve member and radially inwardly of the valve body, the face sleeve being axially moveable relative to the valve member and the valve body between a forward and a rearward position, wherein the face sleeve has a front face that is configured to be flush with the front face of the valve member and is configured to be flush with a front face of the valve body when the face sleeve is in the forward position; and

    a piston fixed to the valve member for common movement, the piston being interposed between the main cavity on one side of the piston and a trap chamber on an opposite side of the piston;

    wherein the piston includes an internal flow passage extending through the piston to enable fluid connection of the main cavity with the trap chamber.

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