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:
Dec. 30, 2025
Filed:
Sep. 09, 2021
Drägerwerk Ag & Co. Kgaa, Lübeck, DE;
Thomas Rossen, Lübeck, DE;
DRÄGERWERK AG & CO. KGAA, Lübeck, DE;
Abstract
A pneumatic module () and a process supply a patient with breathing gas. An inlet () connects a medical gas source and an outlet () via a main flow duct () with a flow valve (), setting a downstream volume flow, and a pressure relief valve () downstream of the flow valve () that vents the main flow duct () when a pressure is exceeded. A control duct (), connected to a relief valve control port (), branches off from the main flow duct () at a branch () upstream of the flow valve (). A pressure control unit (), arranged in the control duct, sets a flow value through the control duct (), and acts on the control port () for setting a maximum pressure. The control port () is connected to a compensating element () providing a compensating volume () for the control duct ().