Valved coupling
CA 1088586 A · Owner: Otis Engineering Corporation · Inventors: Cox, Don C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
COUPLING, Abstract of the Disclosure, A coupling having two valved sections. The valves of each section are open when the sections are joined together and the valves close whenever the sections separate. This abstract is neither intended to define the scope of the invention which, of, course, is measured by the claims nor is it intended to be, limiting in any way.
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 October 28, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 28, 1997.
- 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.