Transmission pipe
CA 1283786 C · Owner: Mitsui & Co. Ltd. · Inventors: Nakamura, Masanobu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to an improvement for a drive shaft which transmits rotation from an engine to an axle of driving wheels of an automobile. The prior art drive shaft using a solid shaft was not only heavy but expensive. This invention attempts to solve such inconvenience by providing a transmission pipe which comprises a tubular member having a smaller diameter at the middle portion thereof and larger diameter at both ends thereof and solid shaft members which are inserted into the both ends of the tubular member, the tubular member and the shaft members being connected by caulking.
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 May 7, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 7, 2008.
- 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.