Air cannon
CA 1298248 C · Owner: De Rooy, Johannes Jacobus · Inventors: De Rooy, Johannes Jacobus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An air cannon, comprised of a pressure tank with an inlet opening and an outlet opening for air, whereby the outlet opening is composed of a tube which is airtightly fastened in the wall of the pressure tank and the one open end debouches into the pressure tank and the other open end debouches out of the pressure tank. A cylinder shaped second tube is fixed in the pressure tank with an open and a closed end, more or less concentric to the mentioned first tube, of which the cross section is larger than the cross section of the first tube. The first tube through the open end debouches into the inside of the second tube, and more or less concentric to it in the bottom of the second tube, an in …
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 31, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 2009.
- 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.