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:
Jul. 01, 2025
Filed:
Jun. 22, 2022
Drägerwerk Ag & Co. Kgaa, Lübeck, DE;
Ralf Heesch, Lübeck, DE;
DRÄGERWERK AG & CO. KGAA, Lübeck, DE;
Abstract
An anesthetic dispenser () includes an anesthetic tank () and a mixing unit () that mixes an anesthetic from the anesthetic tank with a carrier gas. Liquid anesthetic (Nm) can be refilled into the anesthetic tank through a refill opening (). In one operating mode, a specified operating pressure is maintained. A closure () is moveable from a closed position via an intermediate position to an open position and closes the refill opening in both the closed position and the intermediate position. When the closure is moved from the closed position to the intermediate position, a transition time period elapses. A position sensor () detects the event that the closure has been moved out of the closed position. In response to this detection, pressure in the anesthetic tank is lowered during the transition period to a refill pressure that is still above ambient pressure. The closure is then opened.