Power centering compensator for vehicle steering systems
CA 2197710 C · Owner: Glendale Developments, Inc. · Inventors: Howard, Durrell U.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A power centering apparatus (10) for resisting off-center movement of the steered wheels (36) of a vehicle and returning them to a selected center position after each movement. A resistance force a return force and the selected center position are varied remotely. An annular liquid reservoir (64) is formed in an accumulator (62) by a solid outer wall (87) concentric with a flexible inner wall (68) and permits gas to be separated from returned liquid and gas free liquid to be supplied to a centering unit (13) and to a center position trimming unit (16). A plurality of passages and check valves make the trimming unit (16) operable by a single solenoid valve (25) to supply gas free liquid to …
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 September 26, 1995 and granted December 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 26, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 26, 2017.
- 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.