Automotive air suspension system
CA 2089670 A1 · Owner: Thackray, Donald S. · Inventors: Thackray, Donald S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A conventional leaf spring suspension system as applicable to pick-up trucks vans and, motor homes produces a harsh ride and is unable to compensate for changes in vehicle ride height and quality brought about by uneven or heavy vehilcle loading conditions. A more effective suspension is achieved by incorporating air springs to compliment the existing leaf springs thus providing the ability to adjust ride height and hence ride quality. This is, accomplished by replacement of existing suspension components such as shock absorbers, with, on the front suspension an air spring and various attachment brackets and on the rear, an air spring in combination with a sub-frame and torque arm linked …
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 February 17, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 17, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 17, 2015.
- 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.