Rotational control apparatus with variable actuation methods
CA 2471176 C · Owner: Nexen Group, Inc. · Inventors: Weiss, Kevin B.; Hein, Dave
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus (10) for controlling rotation of an input (12) in the most preferred form of a brake includes a housing (50) which can be positioned in either first or second positions. In the first position a piston (66) moves out of , its cavity (64) in the housing (50) and forces a plate (76a) including the piston (66) and an interface facing (80) toward an interface disc (20) while a release spring (92) located in a countersink (74) acts on a fastener (98) to move the first plate (76a) away from the interface disc (20). When flipped to the second position, the piston (66) moves out of its cavity (64) in the housing (50) and forces a second plate (76b) interconnected to the first plate …
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 August 19, 2002 and granted August 11, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 19, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 19, 2024.
- 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.