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Infinitely variable pneumatic pulsatile pump

  • US 5,487,649 A
  • Filed: 09/29/1993
  • Issued: 01/30/1996
  • Est. Priority Date: 09/29/1993
  • Status: Expired due to Term
First Claim
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1. A variable pneumatic pulsatile pump comprising:

  • a pump means including at least two pneumatically independent compression chambers independently and fluidly communicating with a supply of pressurized operating fluid;

    a pneumatic control circuit in fluid communication with said pump means for controllably communicating said pump means with said pressurized operating fluid so as to variably and selectively supply and deprive said compression chambers with said pressurized operating fluid; and

    at least one supply of working fluid to be selectively admitted to and ejected from said pump means in response to said pneumatic control circuit.

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