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. 10, 1991
Filed:
Sep. 07, 1989
Rainer Fehr, Hofstetten, CH;
Kontron Instruments Holding N.V., Caracao, AN;
Abstract
A Doppler measuring device for measuring the flow velocity of a fluid which carries particles which reflect ultrasonic waves is described. The device includes an ultrasonic transducer for insonating the fluid with ultrasonic wave pulses in response to corresponding transmit pulses supplied to the transducer at a predetermined pulse repetition rate. A transmitter connected to a transducer and adapted to produce transmission pulses which excite the transducer to deliver the ultrasonic wave pulses is present. The device also includes a receiver connected to the transducer to receive and process echo signals corresponding to at least two groups of echo waves reflected by particles in the fluid, and an evaluator connected to the output of the receiver to derive from the Doppler information obtained by the receiver an output signal corresponding to the flow velocity.