Passive mechanical damping system for a truck
CA 2022010 C · Owner: Navistar International Transportation Corp. · Inventors: Londt, Edward E.; Robinson, Duane S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A passive mechanical damping system, particularly for the suspension of a cab from a truck frame provides a, minimal level of damping force to impede the free movement of a truck cab about its nominal height and also provides higher levels, progressively or in discrete steps of, damping as the movement of the cab exceeds preset limits of displacement defined by a lost motion connection to provide maximum vibration isolation while providing additional damping to control cab movement when the preset displacement limits are exceeded. The system provides a low rate viscous damper continuously connected between the cab and the truck frame and a high rate viscous damper connected therebetween …
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 July 26, 1990 and granted April 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 2012.
- 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.