Patents Represented by Attorney William C. Cochran, II

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  • Oxygen enriched reciprocating piston respirator
    Patent number: 4587967
    Abstract: 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.
    Type: Grant
    Filed: July 9, 1985
    Date of Patent: May 13, 1986
    Assignee: Lifecare Services, Inc.
    Inventors: Raymond D. Chu, Anthony C. Rubner, Marc A. Bergman