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Elastomeric air pump

  • US 5,074,765 A
  • Filed: 04/13/1990
  • Issued: 12/24/1991
  • Est. Priority Date: 04/13/1990
  • Status: Expired due to Term
First Claim
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1. Air pump for inflatable bladder comprising an open ended dome member of self-supporting, semi-spherical configuration and a generally planar base member, the dome member being hermetically sealed to the base member about a peripheral edge portion of the open end thereof to form a dome-shaped unitary pumping chamber, the dome member being formed of a resiliently flexible, elastomeric material such that the dome is inherently compressible and expansible, an inlet check valve of the flap type formed by a portion of the elastomeric material of the sperical dome member and an outlet check valve extending through the base member for providing communication between the unitary pumping chamber and the interior of the inflatable bladder.

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