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Triple discharge pump

  • US 4,610,605 A
  • Filed: 06/25/1985
  • Issued: 09/09/1986
  • Est. Priority Date: 06/25/1985
  • Status: Expired due to Term
First Claim
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1. A pump comprising:

  • a housing;

    a flexible diaphragm mounted in said housing;

    means cooperating with a first region of the diaphragm to define a first pumping chamber, said pumping chamber having an inlet and an outlet;

    a wobble plate drive at least partially in said housing and subject to nutating motion, said wobble plate drive being drivingly coupled to said first region of the diaphragm to provide a pumping action in said first pumping chamber;

    said wobble plate drive having a nutating axis and said first region of the diaphragm lying radially outwardly of the nutating axis;

    said first region of said diaphragm having a generally annular ramp section which flexes when driven by the wobble plate drive to provide said pumping action in the first pumping chamber; and

    said ramp section when unstressed by any external member being wider radially at a location remote from the nutating axis than at a location nearer the nutating axis.

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