The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 21, 1999
Filed:
Jan. 12, 1996
Peter Francis Readey, Plano, TX (US);
Michael J Cochran, Plano, TX (US);
Cochran Consulting, Richardson, TX (US);
Abstract
A re-breather that includes an inhalant counterlung (18) and an exhalant counterlung (20), with a mouthpiece (30) disposed therebetween. Gas flows from the counterlung (18) to the mouthpiece (30) for use by the diver, with exhalant from the diver directed to the counterlung (20). Gas forced out of the counterlung (20) is input to a canister/scrubber (10) for processing through a scrubbing material in an interior canister (14). The CO.sub.2 -depleted gas is passed back to the counterlung (18). The counterlung (18) has disposed therein a PPO.sub.2 sensor (68) which is directed toward a control system (66) for controlling a valve (46) to adjust the rate of flow of oxygen from a bottle (40) into the CO.sub.2 -depleted gas exiting the canister/scrubber 10 prior to input to the counterlung (18). The rate is varied to maintain the PPO.sub.2 level at a substantially constant level.