Pipe coupling
CA 2537422 A1 · Owner: Gill, Ajit Singh · Inventors: Gill, Ajit Singh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coupling (C1) for attachment to the end portion of a pipe (14 14A) includes , jaw members (60, 62) adapted to slide along an inner end taper (60A 62A) in , the coupling body so that linear movement of the jaw members toward the end of the inner end taper adjacent an end of the coupling body causes movement of the jaw members radially inwardly of the coupling body against the end portion of the pipe when received in the coupling body. The coupling may include a bell type gasket (1) to function as a spring and the spring action of the gasket may be augmented by installing a springy crib ring (R) around the gasket inside the coupling body.
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 November 20, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 20, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 2025.
- 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.