Vehicle suspension
CA 1109901 A · Owner: Jackson Lift Co. Inc. · Inventors: Becker, James M.; Jackson, William E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A retractable tag axle assembly including a, hydraulic cylinder for up-and-down reciprocation of the tandem axle, is provided with structure for protecting the cylinder against damage from shock forces imparted to the suspension spring through the ground-engaging wheels. The structure includes a crank secured to one end of the spring and coupled with the hydraulic cylinder at a point intermediate the ends of the spring each that the full length of the latter is available for up-and-down flexure yet, the overall length of the assembly is not increased over, that of conventional tag axle assemblies. Ball-and-socket type mountings between the ends of the cylinder and the, frame and crank …
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 September 29, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 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.