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Constant flow fluid pump

  • US 6,227,807 B1
  • Filed: 02/02/1999
  • Issued: 05/08/2001
  • Est. Priority Date: 02/02/1999
  • Status: Expired due to Term
First Claim
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1. A constant flow fluid pump, including a single fluid pump means having a single linear moving piston actuated by a rod and a crankshaft within a single cylinder for pumping a fluid through said single cylinder, comprising:

  • a motor disposed in mechanical communication with said crankshaft of said single pump means; and

    control means in electrical communication with said motor for energizing said motor at predetermined differing rates at discrete steps through the 360°

    rotation of said motor to provide for rotating said crankshaft at fluctuating speeds and thereby drive said single moving piston at a constant linear speed during the upstroke of said single piston, and to minimize the drown stroke time of said single piston.

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