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. 04, 1982
Filed:
Nov. 02, 1979
Herman L Watson, Perrine, FL (US);
Marvin A Sackner, Miami Beach, FL (US);
Respitrace Corporation, Ardsley, NY (US);
Abstract
A device for measuring a predetermined respiratory volume comprises an elongate, air-tight flexible bag of the predetermined volume, the bag being closed at one end and open at the other; and an elongate substantially rigid tubular member extending into the bag through its open end and occupying a major portion of the length of the bag, the bag being secured at its open end to the tubular member for forming an air-tight seal between the bag and the tubular member, the portion of the tubular member extending into the bag having a plurality of distributed apertures along its length and the portion of the tubular member outside the bag having at least one opening defining a mouthpiece.