Coordinated control of an active suspension system
CA 2309989 A1 · Owner: Schubert, William L. · Inventors: Schubert, William L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An active suspension system including multiple active vibration isolators (28 30, 32) mounted between the chassis (4) and cab (6) is disclosed. Each isolator (28, 30, 32) includes a spring (44) and hydraulic actuator (68) connected between mounts (40, 42) between the cab (6) and chassis (4). The actuator (44) moves the cab (6) relative to the chassis (4) when hydraulic fluid is selectively supplied to the actuator (68) by a valve assembly (206) responsive to a valve control signal. A first isolator sensor (132) measures displacement between the mounts, and a second isolator sensor (84) measures cab movement due to disturbances in the chassis (4). The multiple isolators (28, 30, 32) …
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 October 19, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 19, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 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.