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:
Nov. 11, 1980
Filed:
Jul. 17, 1978
Victor L Bartholomew, Hemet, CA (US);
Harold R Havstad, Eagle Point, OR (US);
Hudson Oxygen Therapy Sales Company, Temecula, CA (US);
Abstract
A therapeutic incentive spirometer comprises a spirometer body having an outer wall and an inner wall, separated by a passageway, an interior chamber defined by said inner wall, a gas outlet for directing gas out of the chamber, a gas inlet means for directing gas into the chamber. A component for varying the flow rate of gas through either the gas inlet or outlet, and visual device associated with the interior chamber for indicating the rate of gas flow through the chamber. The preferred device includes a cap having a gas by-pass intake port located therein, which port is registered with a slanted surface on the outer body wall, the cap being movable relative to the body wall which movement changes the by-pass port opening size.