Spinning top and driving device for actuating the same
CA 1287491 C · Owner: Beaudry, Normand A. · Inventors: Beaudry, Normand A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A driving device for initiating and maintaining a spinning top in a continuous movement of rotation and precession. The driving device is made of a shaft adapted to axially rotate in a tube on which is concentrically fixed a rim. A top is hingely connected by its central post to the end of the shaft adjacent the rim. The post is able to rotate around the rim through a ball-bearing joint and the friction between the post and the rim causes the top to spin around the rim. By momentarily braking or changing the direction of the shaft with a manual contact on the shaft it is possible to create a, precession movement to the spinning top which will raise above the rim.
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 August 13, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 13, 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.