Pump diaphragm

Details Pump diaphragm Pump diaphragm

1979-03-01

1981-06-02

Hershkovitz, Abraham

Expansible chamber devices

Collapsible chamber wall portion

Wall portion formed of flexible material

92 98R, 92103SD, F01B 1900

Patent

active

042704413

ABSTRACT:
A diaphragm configuration is disclosed for an air-driven pump. The diaphragm includes concentric ribs on the pressure side of the flexure portion thereof. This has been found to extend the life of diaphragms made of relatively brittle materials such as synthetic resin polymers. A ridge is provided on the surface of the diaphragm where sealing is to occur as a means for increasing the sealing capability of the synthetic resin polymer material.

REFERENCES:
patent: 1338080 (1920-04-01), Hodgson
patent: 2339876 (1944-01-01), Phillips
patent: 2550672 (1951-05-01), Chyba
patent: 2678663 (1954-05-01), Chyba
patent: 2741205 (1956-04-01), Paulton
patent: 2786423 (1957-03-01), Coffey
patent: 3872777 (1975-03-01), Mastis
patent: 3911796 (1975-10-01), Hull
patent: 3982559 (1976-09-01), Ochs
patent: 4035107 (1977-07-01), Kesten

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