Scroll compressor having axial compliance valve
CA 2292330 C · Owner: Gatecliff, George W. · Inventors: Gatecliff, George W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A scroll compressor assembly including a first scroll device having a first involute wrap element projecting from a first substantially planar surface a second scroll device having a second involute wrap element projecting from a second substantially planar surface and a third surface facing oppositely the second surface the first and second scroll devices adapted for mutual engagement with the first involute wrap element projecting toward the second surface and the second involute wrap element projecting toward the first surface the first surface positioned substantially parallel with the second surface whereby relative orbiting motion of the first and second surfaces compresses fluids …
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 December 13, 1999 and granted March 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 13, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 2021.
- 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.