Ultrasonic flowmeter
CA 1189948 A · Owner: The Boc Group, Inc. · Inventors: Polenske, Errol E.; Kou, Abraham H.; Peickert, Wilfried R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ultrasonic flowmeter which measures the velocity of a gas medium flowing within a conduit utilizing the time of flight principal with phase measurement approach. A pair of ultrasonic transducers are oppositely located around the conduit at a predetermined angle to the direction of the flow. Each transducer alternates between acting as a transmitter of ultrasonic frequencies and a detector of ultrasonic frequencies, thus as one transducer is transmitting the other is, receiving. In each instance a measurement is made of the time, of flight of the ultrasonic signal between the transmitter transducer and the receiver transducer and a microcomputer calculates the velocity of the gas by a …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted July 2, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2002.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.