Vane for a rotary compressor
CA 2226801 C · Owner: Riegger, Otto K. · Inventors: Weatherwax, Richard B. Iii; Riegger, Otto K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Vane (60, 90, 102, 120) for use in a rotary vane compressor (30) or other rotaryexpansible chamber device and process for making the vane in which the vane comprises a vane body having a first tip (61 92, 104, 122), a second tip (63, 94, 106 124), and a vane body (65, 96, 108, 126) interconnecting the tips. At least one of the first and second tips comprises a metal alloy and a lubricating agent provided in admixture with the metal alloy. The vane body comprises a metal alloy and a plurality of inorganic particles provided in admixture with the metal alloy. The inorganicparticles have a coefficient of thermal expansion which is less than the coefficient of thermal expansion of the metal …
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 January 14, 1998 and granted June 26, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 14, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 14, 2020.
- 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.