Gas venting assembly for vacuum truck
CA 2239628 C · Owner: Angeltvedt, Kelvin · Inventors: Angeltvedt, Kelvin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An elongate tubular stack is pivotally connected by a swivel elbow with the vent line leading from a vacuum/blower pump connected with the tank of a vacuum truck. The stack is positioned to extend alongside the tank. A hydraulic cylinder assembly is connected to the stack for raising and lowering it between horizontal transport and vertical venting positions. When the vacuum truck is taking on crude oil into the tank H2S-containing gas is , vented, through the raised stack. When the truck is travelling the stack is lowered , to, the horizontal position.
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 June 1, 1998 and granted August 26, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 1, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 1, 2020.
- 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.