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:
Jun. 17, 1980
Filed:
Jul. 17, 1978
Max Isaacson, Dayton, OH (US);
Other;
Abstract
A medical patient or other individual exhales air through a pressure control exhalation valve at a pressure which remains substantially constant during exhalation and corresponds to the residual pressure desired within the lungs. The pressure control exhalation valve incorporates a disc-like valve member which is biased towards a closed position by a spring having a low spring modulus, and the spring engages a back-up plunger which is adjustable according to the desired residual lung pressure. The pressure control valve may be connected in series with a flow control or retard valve which is adjustable to produce a biofeedback pressure within the valve for teaching the individual to breathe slower and with less effort. During inhalation, pressurized air may be supplied to the pressure control exhalation valve through a demand inhalation valve which is adjustable to a supply pressure corresponding to the preselected exhalation pressure in order to provide for continuous positive pressure breathing.