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Split gate valve

  • US 9,222,583 B2
  • Filed: 04/08/2011
  • Issued: 12/29/2015
  • Est. Priority Date: 04/08/2011
  • Status: Active Grant
First Claim
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1. A system, comprising:

  • a split gate valve, comprising;

    a body having a bore and a cavity;

    first and second gate sections coupled together and configured to move together within the cavity of the split gate valve along a path of travel between an open position and a closed position relative to the bore, wherein the first and second gate sections comprise respective first and second openings that selectively align with the bore in the open position;

    a biasing mechanism disposed between the first and second gate sections, wherein the biasing mechanism biases the first and second gate sections away from one another to form opposite seals with opposite seats of the split gate valve along an entirety of the path of travel;

    a rolling actuator configured to reduce friction and to convert a rotational input into a linear motion to move the first and second gate sections along the path of travel between the open and closed positions, wherein the rolling actuator comprises a plurality of rollers or a plurality of balls disposed along a spiraling path; and

    wherein the split gate valve comprises at least one of;

    the biasing mechanism comprises a cam mechanism;

    the biasing mechanism comprises an elastic material that is not a spring;

    orthe cavity has a substantially rectangular perimeter with four flat interior sides that extend along an axis through the body from a first side toward a second side, and the first and second gate sections collectively define four flat exterior sides disposed along the four flat interior sides of the cavity.

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