04587967 is referenced by 159 patents and cites 23 patents.

A variable flow reciprocating piston respirator system which is capable of providing a substantially constant oxygen enrichment over an entire inspiration stroke of a variable flow respirator output. A proportional control valve is used to deliver oxygen from an oxygen supply tank to the output of a reciprocation piston pump. A microprocessor controls the magnitude of opening of the proportional valve to insure that a proper overall volume of the output is produced with the proper percentage of enrichment of oxygen.

Title
Oxygen enriched reciprocating piston respirator
Application Number
6/753334
Publication Number
4587967
Application Date
July 9, 1985
Publication Date
May 13, 1986
Inventor
Marc A Bergman
Lafayette
CO, US
Anthony C Rubner
Arvada
CO, US
Raymond D Chu
Boulder
CO, US
Agent
William C Cochran II
Assignee
Lifecare Services
CO, US
IPC
A61M 16/00
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