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:
Aug. 09, 1988
Filed:
Jan. 29, 1987
Alvin E Brown, Santa Cruz, CA (US);
Manning Technologies, Inc., Santa Cruz, CA (US);
Abstract
A circuit simulating the electrical signal response of a flowing liquid whose velocity is to be measured by an upstream-downstream flowmeter. The circuit takes the electrical flowmeter transmit signal from an upstream-downstream flowmeter and actuates a gated oscillator which feeds pulses to a counter, establishing an electrical signal which has a duration of almost the mean transit time of an acoustic signal traveling between transducers and the flowmeter. This signal is incremented by further pulse counts and these further pulses are indicative of the exact mean transit time, plus pulses arriving on either side of the exact mean transit time, indicative of the upstream and downstream transit times. The upstream and downstream pulses are fed to a second oscillator for wave shaping. The second oscillator and associated circuitry simulates electrical signals produced by a transducer receiver in the flowmeter.