Airsprings
CA 1115298 A · Owner: The Goodyear Tire & Rubber Company · Inventors: Brown, Paul R.; Hirtreiter, Arthur B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A high ratio L/D sleeve type rolling lobe airspring is modified to provide column stabilization and correct a "weinering" effect by reason of a collar mounted at the plug end of the airspring sleeve. The collar prevents the inflated sleeve from rolling over a mounting ring that retains the sleeve on the plug. In another embodiment a rigid member is mounted inside of the airspring to limit the kink effect of the sleeve at a full jounce position such that upon being repressurized under restrained load the sleeve returns to an axially symmetric configuration.
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 December 29, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 29, 1998.
- 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.