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:
Mar. 06, 1979
Filed:
Oct. 06, 1977
Louis C Cosentino, Wayzata, MN (US);
Renal Systems, Inc., Minneapolis, MN (US);
Abstract
This invention relates to an ultrasonic flow meter utilizing a conventional tubular member with an inlet and outlet. An ultrasonic transducer is located in the member to transmit and receive ultrasonic energy through liquid flowing through the member. An energizing means is connected to the transducer so that ultrasonic energy can be transmitted through the liquid in the member. Reflector means variably positionable within the member are provided for establishing a position for the reflector means which is proportional to liquid flow rate through the member and for reflecting ultrasonic energy from the transducer back to the transducer. Control means are provided for producing at least a single pulse of ultrasonic energy from the transducer to be transmitted through the liquid and for detecting an echo pulse reflected from the reflector means. Means are provided for converting the time between transmission of the ultrasonic pulse and receipt of the echo pulse by the transducer to a signal proportional to the liquid flow rate through the tubular member.