Railroad tank car
CA 1109337 A · Owner: Union Tank Car Company · Inventors: Parsons, James D.; Wike, Paul S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a container for a plurality of non-compatible liquids, the container comprising a generally cylindrical tank having a generally horizontal longitudinal axis. A flexible diaphragm is in the tank, the periphery of the diaphragm contacting the wall of the tank in a generally vertical plane which generally bisects the tank. The diaphragm alternately lies against opposite portions of the tank so as to define different chambers for such non-compatible liquids. Means are provided for sealing the diaphragm against the wall and means are provided, for filling the chambers with liquid. The means for filing the chambers comprise a pair of liquid inlet conduits extending upwardly from the …
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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 September 22, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 22, 1998.
- 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.