Sterilize-in-place diaphragm pumps
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United States of America Patent
Stats
-
Sep 26, 1995
Grant Date -
N/A
app pub date -
Aug 1, 1994
filing date -
Aug 1, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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