Self-steering converter dolly
CA 1195357 A · Owner: Weldex Company Limited · Inventors: Curry, N. Royce
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a self-steering converter dolly that in operation is releasably connected to the rear of a forward vehicle, such as a tractor trailer combination the, dolly supporting the front end of a towed rearward vehicle such, as a second or "pup" trailer, via a fifth wheel connection and so that the vehicles are in tandem. The connecting means between the dolly frame and the forward vehicle frame consist of two transversely-spaced connectors that permit free pitching movement between the two frames but without substantial rolling or yawing movements between the two frames. The wheels of the dolly are mounted for steering and are urged to the neutral or straight-ahead position …
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 October 15, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2002.
- 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.