Acoustic sounding system for measuring distances
CA 2603724 C · Owner: Weatherford Technology Holdings, Llc · Inventors: Guion, Walter Franklin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An acoustic generator, a device that generates sound by opening a pressurized gas chamber (80) to a gaseous void, comprising a chamber having at least one valve (84) that opens to a void, a pressure system (90s) linked to the chamber to set the chamber's gas pressure to a different pressure than the void's gas pressure when the valve is in the closed position an actuator (20) that , continues to apply an actuating force to the valve (84) after the valve is cracked open and the unequal gas pressures begin to equilibrate said , actuating force being other than the force created by the unequal gas pressures equilibrating, and an offset system (45) linked to the valve that opposes the …
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
- Filed March 30, 2006 and granted January 29, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 30, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.