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. 26, 1987
Filed:
Dec. 06, 1984
Adalbert Pasternack, Bad Schwartau, DE;
Dr/a/ gerwerk AG, , DE;
Abstract
A cycle respirator for pressure operation makes sure that in the respiratory cycle a positive pressure relative to the ambient atmosphere always prevails. During the exhaling phase this positive pressure is undesirable because he (the user) is additionally burdened unnecessarily during exhalation. The invention includes a sensor connected with a measuring circuit which can distinguish between inhalation phase and exhalation phase and activates through a measuring circuit an auxiliary device by which the positive pressure is reduced during the exhalation phase. Across an electric resistance path a voltage difference drops which varies in accordance with the stroke movements of the breathing bag. This varying voltage difference is used as a measurement signal for the switching of the auxiliary device, whereby the positive pressure in the respiratory cycle is created in the respiratory cycle only during the inhaling phase, but is reduced during the exhaling phase.