Power transmission
CA 1189691 A · Owner: Sperry Corporation · Inventors: Stephan, Robert W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of making a rotor of a fluid energy translating device wherein the rotor has an annular passage entirely within the rotor, a plurality of radially extending vane slots intersecting the passage and axial openings intersecting the annular passage. The method comprises forming an annular groove in the periphery of a solid body closing the open side of the groove to provide the annular passage, forming radial vane slots in the body intersecting the annular passage, and forming axial openings in the body intersecting the annular passage.
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 July 2, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2002.
- 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.