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Directional flow control

  • US 5,070,905 A
  • Filed: 05/29/1990
  • Issued: 12/10/1991
  • Est. Priority Date: 05/29/1990
  • Status: Expired due to Term
First Claim
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1. A flow control device comprisinga first channel for the flow of fluid;

  • a branch channel connected to said first channel and angularly disposed with respect thereto to serve as a conduit for at least a portion of the flow from said first channel; and

    means at the convergence of the branch and first channels for controlling the flow from said first channel into said branch channel, comprising a diaphragm which is nominally positioned on a ring seat and bowed under pressure into said first channel, said diaphragm making tangential contact with said ring seat that slopes away from both sides of said contact;

    said branch channel having opposite ends, of which one end is connected to said first channel and the other end is connected to a second channel, with the length of said branch channel exceeding the maximum diameter of the first and second channels;

    said branch channel being formed by a plurality of distinctive subordinate and enclosed channels in order to permit a substantial flow of fluid into said second channel while limiting the extent to which said diaphragm can be drawn into said branch channel under conditions of substantial fluid flow.

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