04889531 is referenced by 23 patents and cites 8 patents.

A pressure regulator including high and low pressure chambers separated by a divider having an opening, a closing member biassed to a closing position for closing the opening with a biassing force according to a desired pressure differential between the chambers, and a damping device for damping the resulting force on the closing member. There is also disclosed a fluid drainage system having a suction chamber with a suction regulator, and various arrangements of diaphragms for measuring pressure differentials. An anti-spill device for the draining system is disclosed as well.

Title
Dry bottle drainage system
Application Number
642564
Publication Number
4889531
Application Date
August 6, 1987
Publication Date
December 26, 1989
Inventor
Nicholas J D Antonio
Liverpool
NY, US
Nicholas F D Antonio
Liverpool
NY, US
Agent
Louis J Weisz
Mark M Kusner
D Peter Hochberg
Assignee
Pfizer Hospital Products Group
NY, US
IPC
A61M 1/00
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