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Progressive pump force regulation

  • US 9,360,004 B2
  • Filed: 11/15/2013
  • Issued: 06/07/2016
  • Est. Priority Date: 11/15/2012
  • Status: Active Grant
First Claim
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1. A pump, comprising:

  • a pump housing including a chamber with a beveled inner side wall, said chamber including an open end having a third area;

    a membrane element, said membrane element including a first area and a central section with a second area surrounded by a periphery section,whereinsaid central section is thicker than said periphery section,said second area of said central section is smaller than said third area of said open end of said chamber,said membrane element is arrangable over said pump housing forming a sealed chamber,said central section of said membrane element being arranged over said open end of said chamber,said thicker central section being shaped to protrude away from said chamber,said beveled inner side wall forms a progressively narrowing, progressive deceleration surface for the central section as the central section is pressed inward within the chamber during a pump stroke.

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