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:
Aug. 13, 1991
Filed:
Feb. 03, 1989
Warren E Perkins, Jensen Beach, FL (US);
Other;
Abstract
A fail-safe system for use with pulse dose respirating gas delivery devices provides a continuous, metered flow of oxygen to the patient in the event that the delivery device malfunctions or suffers a power failure. The system includes a piston resiliently biased toward one end of a cylinder and having provision for applying the force of pressurized respirating gas on the piston in opposition to the biasing force and in synchronization with doses of respirating gas produced by the delivery device and to remove that force in coordination with the delivery of a gas dose to the patient. The piston movement is arranged to actuate valve means opening a path for the continuous flow of oxygen to the patient in the event that successive gas doses are not delivered to the patient within a predetermined length of time.