05209761 is referenced by 5 patents and cites 7 patents.

A liquid trap for removing liquid such as condensed water vapor from gas in a patient's sampled airstream. The liquid trap includes a separation chamber that is used to separate the liquid from the gas. An opening in the separation chamber allows the liquid to flow into a collection chamber where it is temporarily stored. The collection chamber has a purge port that allows the chamber to be emptied of liquid without removing the chamber from a gas analyzer. A check valve is coupled to the purge port to retain the liquid in the collection chamber. Electrodes sense when the liquid reaches a predetermined level. A vacuum is applied to the check valve to remove the liquid from the collection chamber through the purge port.

Title
Liquid trap with purge port
Application Number
7/894057
Publication Number
5209761
Application Date
June 3, 1992
Publication Date
May 11, 1993
Inventor
Jeffrey M Payne
Snohomish
WA, US
Paul A Ivester
Seattle
WA, US
Agent
Seed and Berry
Assignee
SpaceLabs Medical
WA, US
IPC
B01D 45/12
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