Gearless differential speed reducer
CA 1278441 C · Owner: Imase, Kenji · Inventors: Imase, Kenji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A gearless speed reducer structure characterised by first and second discs disposed, to face each other so as to transfer the rotation of the former to the latter; sinuous grooves provided in the facing sides of said first and second discs and arranged in a closed loop; and rollable balls arranged between said first and second discs and positioned in said grooves so as to roll along the grooves at the, same time, transmitting rotation of said first disc to said second disc.
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 January 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 2, 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.