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:
May. 02, 1995
Filed:
Apr. 15, 1993
Applicant:
Inventor:
Charles G Murray, Auckland, NZ;
Assignee:
Fisher & Paykel Limited, Auckland, NZ;
Primary Examiner:
Int. Cl.
CPC ...
A61M / ; F16K / ;
U.S. Cl.
CPC ...
137392 ; 7386141 ; 1374875 ; 250574 ; 250576 ; 250577 ; 604253 ;
Abstract
Liquid supply apparatus is disclosed for controlling the supply of liquid to humidifier apparatus. The liquid supply apparatus has a chamber with an inlet through which a liquid such as water is supplied to the chamber. The chamber has a flow detector to detect liquid entering the chamber and a level detector near the base of the chamber in a narrow portion of the chamber which, in conjunction with a calibrated orifice at the chamber outlet, provides an indication of the rate of liquid flow from the chamber. Control of supply of liquid is performed by a magnetically activated valve member.