Axle suspension system
CA 2108724 C · Owner: Ramsey, John · Inventors: Ross, Joseph M.; Keeler, Michael J.; Ramsey, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A beam-type axle suspension system particularly applicable to trailers and which is subject to torsional forces includes an elongated beam a pneumatic bellows located on the beam a hanger bracket located at one end of the beam means for rigidly connecting the beam to the axle and a resilient pivot connection for resiliently connecting the beam to the hanger bracket wherein the beam includes an orifice through which the axle is slid or pressed and rigidly attached thereto thereby preventing the axle from assuming a cross-sectional shape substantially different from its unstressed shape due to the torsional forces imposed on the axle. This beam- type axle suspension system also includes a …
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, 1993 and granted May 20, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 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.