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.

Date of Patent:
Aug. 13, 2002

Filed:

Jan. 07, 2000
Applicant:
Inventors:

Patrick W. Truitt, Pittsburgh, PA (US);

Michael Bobeck, Sarver, PA (US);

Assignee:

Respironics, Inc., Murrysville, PA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M 1/500 ;
U.S. Cl.
CPC ...
A61M 1/500 ;
Abstract

A fluid mixing apparatus and method in a fluid supply system that mixes a secondary fluid flow with a primary fluid flow in such a manner so as to minimize disruption of the fluid flow profile for the primary fluid flow downstream of the mixing point as the secondary fluid flow is introduced to the primary fluid flow. This is accomplished by providing a second conduit carrying the secondary fluid flow that is coupled to a first side of a first conduit carrying the primary fluid flow such that the secondary fluid flow travels around at least a portion of the first conduit. An inlet port arrangement is defined in the first conduit and is arranged such that a size of the inlet port arrangement that introduces the secondary gas flow from the second conduit into the first conduit increases as a distance around the first conduit from the first side increases.


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