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:
Apr. 03, 1990
Filed:
Aug. 17, 1988
Applicant:
Inventors:
Ilija Orec, Auckland, NZ;
Erwin J Meyer, Auckland, NZ;
Assignee:
Fisher & Paykel Limited, Auckland, NZ;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M / ; A61M / ;
U.S. Cl.
CPC ...
12820316 ; 12820326 ; 137451 ; 261139 ;
Abstract
A humidifier for humidifying gases flowing from a source to a person, e.g. a patient breathing apparatus, has a gas chamber interconnected with a water compartment and at least one float controlled valve which controls the flow of water into the water compartment so that if the level of water in the gas chamber exceeds a predetermined level, flow of water to the water compartment is prevented. A further float controlled valve may be provided to prevent flow of water from the water compartment to the gas chamber when the water level in the gas chamber exceeds the predetermined, or a further predetermined, level.