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:
Sep. 14, 1993
Filed:
Feb. 10, 1992
Wolfgang Falb, Krummesse, DE;
Karl-Ludwig Gippert, Lubeck, DE;
Ulrich Heim, Lubeck, DE;
Uvo Holscher, Stockelsdorf, DE;
Siegfried Kiske, Koummesse, DE;
Gotz Kullik, Lubeck, DE;
Ralf-Ernst Loser, Kreuzkamp, DE;
Christoph Maurer, Bad Schwartau, DE;
Dragerwerk Aktiengesellschaft, Lubeck, DE;
Abstract
A metering device for a liquid anesthetic that is fed from a reservoir via a supply line into a heatable intermediate container maintained under pressure, from which gaseous anesthetic is fed via a metering valve into a fresh gas line. Accurate metering, which can be better monitored, is provided for low-boiling anesthetics. A supply unit 7 is mounted in the supply line 5, and liquid anesthetic is transported by the supply unit 7 into the intermediate container 6 until it is filled up to a predetermined filling level. A heating device 12 stabilizes the temperature of the liquid bath and ensures a sufficiently high vapor pressure of the gaseous anesthetic above the liquid phase. The anesthetic vapor is sent via the metering valve into the fresh gas line.