Liquid acoustic waveguide tube
CA 1315385 C · Owner: Viscovich, Paul W. · Inventors: Viscovich, Paul W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A monitor for detecting the presence of liquid in a fluid supply conduit wherein the fluid has at least a liquid phase, and wherein bubbles may form in the fluid is, shown to include an ultrasonic signal transmitter for generating and transmitting an ultrasonic signal an, ultrasonic signal receiver, means for attaching the transmitter and receiver to the conduit and a waveguide, which confines a portion of the fluid so that the ultrasonic signal is guided to the receiver when liquid is present in the confined portion. The waveguide also tends to exclude bubbles from the confined portion. The waveguide may include a cylinder positioned in the conduit between the transmitter and the receiver …
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 March 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2010.
- 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.