Scroll compressor including drive pin and roller assembly having sliding wedge member
CA 2060807 C · Owner: Tecumseh Products Company · Inventors: Richardson, Hubert Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A swing-link radial compliance mechanism for scroll compressors which minimizes the damage and wear caused by chattering vibrations. The eccentric crankpin has a planar surface and a wedge is disposed in the bore of the roller between the planar surface of the crankpin and the arc surface of the roller. The wedge has a flat surface for transferring chattering vibrations focused on an axial line of force to the planar surface of the crankpin. Also, an arcuate surface of the wedge engages the arc surface of the roller and allows for rocking movement of the wedge.
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 February 4, 1992 and granted September 13, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 4, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 4, 2014.
- 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.