Valve mechanism for an air pump

Details Valve mechanism for an air pump Valve mechanism for an air pump

1977-08-04

1979-01-30

Freeh, William L.

Pumps

Motor driven

Electric or magnetic motor

417566, 137855, F04B 4304, F04B 3910

Patent

active

041370163

ABSTRACT:
An improved valve mechanism for a small sized air pump, having valve elements each of which is secured in a housing of a valve casing. The valve element has a semi-circular portion and a tongue. The semi-circular portion is trapezoidal and snuggly and firmly positioned within the housing.

REFERENCES:
patent: 2266270 (1941-12-01), Roth
patent: 2961149 (1960-11-01), Hull
patent: 3005523 (1961-10-01), May
patent: 3314600 (1967-04-01), Hadley
patent: 3613935 (1971-10-01), Rogge
patent: 3671151 (1972-06-01), Duke et al.
patent: 3821966 (1974-07-01), Small
patent: 3825374 (1974-07-01), Rondo
patent: 3830596 (1974-08-01), Rondo

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