Diaphragm pump having a gas venting surface

Details Diaphragm pump having a gas venting surface Diaphragm pump having a gas venting surface

2006-02-28

2006-02-28

Freay, Charles G. (Department: 3746)

Pumps

Motor driven

Fluid motor

C417S383000, C417S395000, C417S572000, C417S053000

Reexamination Certificate

active

07004731

ABSTRACT:
A scarred surface structure on the cover curvature of a diaphragm compressor is created by shot blasting. The scarred surface structure hinders the sealing effect between the cover curvature and the diaphragm and thereby counteracts the formation of gas cushions.

REFERENCES:
patent: 2578746 (1951-12-01), Scherger et al.
patent: 4109535 (1978-08-01), Reed et al.
patent: 4136603 (1979-01-01), Doyle, Jr.
patent: 4430048 (1984-02-01), Fritsch
patent: 4580952 (1986-04-01), Eberle
patent: 4828464 (1989-05-01), Maier et al.
patent: 4832581 (1989-05-01), Muller et al.
patent: 6120033 (2000-09-01), Filippi et al.
patent: 31 46222 (1983-06-01), None
patent: 31 46222 (1983-06-01), None

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