Diaphragm pump

Details Diaphragm pump Diaphragm pump

2006-11-22

2009-10-06

Leslie, Michael (Department: 3745)

Expansible chamber devices

Collapsible chamber wall portion

Wall portion formed of flexible material

C092S09800R

Reexamination Certificate

active

07597043

ABSTRACT:
A diaphragm unit includes a plurality of diaphragms which are layered on top of each other. A case and the diaphragm unit define a pump chamber. The diaphragm unit has a first surface and a second surface on the side opposite to the first surface. A support member for supporting the diaphragm unit has a first support surface for supporting the first surface and a second support surface for supporting the second surface. The support member allows the diaphragms to slide between the first support surface and the second support in case here the diaphragm unit changes its form. Thus, the durability of the diaphragm is improved.

REFERENCES:
patent: 5291822 (1994-03-01), Alsobrooks et al.
patent: 5468128 (1995-11-01), Benalikhodja
patent: 6080685 (2000-06-01), Eady
patent: 6145430 (2000-11-01), Able et al.
patent: 718205 (1942-03-01), None
patent: 69301902 (1996-09-01), None
patent: 7-14179 (1995-03-01), None
patent: 2001-115967 (2001-04-01), None

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