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:
Feb. 12, 2002
Filed:
Apr. 15, 1999
Siemens Elema AB, Solna, SE;
Abstract
An ultrasonic flow meter for measuring a flow in a measurement channel has a first sensor chamber with a first membrane arranged against the measurement channel and a first transducer arranged at a specific distance from the first membrane, and a second sensor chamber with a second membrane arranged against the measurement channel and a second transducer arranged at a specific distance from the second membrane is described. The first membrane and the second membrane are gas-tight. In order to reduce loads on the membrane, while still allowing the membrane to be made as thin as possible, the first sensor chamber and the second sensor chamber are gas-tight, a first gas line connects the first sensor chamber to the measurement channel and a second gas line connects the second sensor chamber to the measurement channel.