Vacuum breaker-pressure release device
CA 1138300 A · Owner: Kuykendall, John R. · Inventors: Kuykendall, John R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The vacuum breaker-pressure release device has a vacuum chamber including an upper end for connection to a downwardly extending fitting connected to the upper end of the gasoline storage tank vent pipe. The vacuum chamber has a reduced open bottom end portion defining a shoulder seating a valve assembly. A conduit extends from the side of the vacuum chamber and has an upwardly extending terminal portion. A pressure release chamber having escape openings and an, open bottom end is connected to the terminal portion and in communication with the conduit and the vacuum release chamber. The shoulder at the bottom of the pressure release chamber seats a valve assembly.
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 December 28, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 28, 1999.
- 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.