Sterilize-in-place diaphragm pumps

Details Sterilize-in-place diaphragm pumps Sterilize-in-place diaphragm pumps

1994-08-01

1995-09-26

Bertsch, Richard A.

Pumps

Motor driven

Electric or magnetic motor

F04B 4302

Patent

active

054529930

ABSTRACT:
A pump housing including a base and head mounted to the base in a working position and a sterilize-in-place position. A flexible rolling diaphragm is positioned and clamped by the base and head in the working position to define between the diaphragm and head a working chamber. A retainer is provided for retaining the diaphragm fixed to the base when the base and head are in their sterilize-in-place position. The housing elements in their working position, exposes a first area of the diaphragm to the working chamber and in the sterilize-in-place position, exposes a second area greater than and including the first area. This provides a larger area of sterilization beyond the clamping area which is exposed in the working position of the head and base.

REFERENCES:
patent: 3250225 (1966-05-01), Taplin
patent: 3769879 (1973-11-01), Lofquist, Jr.
patent: 3855995 (1974-12-01), Bentley
patent: 4035107 (1977-07-01), Kesten et al.
patent: 4265600 (1981-05-01), Mandroian
patent: 4269906 (1981-05-01), Schmechtig
patent: 4466339 (1984-08-01), Muddle
patent: 4846636 (1989-07-01), Danby et al.
patent: 5145331 (1992-09-01), Goes et al.
patent: 5192198 (1993-03-01), Gebaver et al.
patent: 5306122 (1994-04-01), Gebaver et al.

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