Elastomeric air pump

Details Elastomeric air pump Elastomeric air pump

1990-04-13

1991-12-24

Smith, Leonard E.

Pumps

Expansible chamber type

Valve in collapsible wall pumping member

36 29, 441 91, F04B 4500

Patent

active

050747657

ABSTRACT:
An air pump formed of a resilient elastomeric material bondable about the perimeter of an opening provided in a plastic inflatable bladder, has a self-supporting spherical dome portion and a generally planar base portion. An inlet flapper type valve is integrally formed in a wall of the dome and an outlet check valve extends through an opening in the base for supplying air into the plastic bladder accomplished by alternately compressing and releasing the dome. The underside of the base includes projections disposed about the outlet valve to hold the bladder wall clear of the outlet valve. The base may also include a tail portion which extends laterally of the dome with an exhaust valve affixed thereto for deflating the bladder.

REFERENCES:
patent: 3068494 (1962-12-01), Pinkwater
patent: 3118596 (1964-01-01), Saile
patent: 3133696 (1964-05-01), Mirando
patent: 3155991 (1964-11-01), Dunham
patent: 3486663 (1969-12-01), Humphrey
patent: 3507586 (1970-04-01), Gronemeyer et al.
patent: 4552515 (1985-11-01), Endo
patent: 4995173 (1991-02-01), Spier

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