Tandem drive axle system
CA 2003642 C · Owner: Dana Corporation · Inventors: Hicks, Bradford Wallace
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tridem rear drive axle system (100) comprising a front-rear drive axle assembly (112), a middle-rear drive axle assembly (22) and a rear-rear drive assembly (24) is provided wherein torque is distributed substantially equally to each of the three rear drive axles. The front-rear drive axle assembly (112) includes a first input shaft (118) for driving the front-rear drive axle gear set and a second input shaft (114) for driving a through shaft (116) drivingly connected to the middle-rear drive axle assembly (22) which is of a standard forward tandem axle design. A transfer case (102) having a first output shaft (108) for connection to the first input shaft and a second output shaft (106) …
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 November 22, 1989 and granted April 20, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 22, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 2011.
- 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.