Fluid actuator
CA 1286950 C · Owner: Schisler, Robert Charles · Inventors: Schisler, Robert Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is a fluid actuator (82) of the rolling lobe form in which a closed toroidal flexible membrane (84) forms concentric rolling lobes on the inside and outside surfaces of an annular piston (86) which moves axially into the membrane (84). The fluid actuator (82) can be used in brake and clutch assemblies (80) where the actuator is connected to a high pressure fluid source (98) and serves to activate the brake or clutch assembly (80), a shaft (114) or axle can pass through the center of the toroid.
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 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 2008.
- 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.