Toothed wheel for a play-free spur gear set
CA 2560632 C · Owner: Sandner, Christian · Inventors: Sandner, Christian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A toothed wheel is described for a play-free spur gear set comprising a hub , (1), with a toothed ring (2) supported by the hub (1) which ring is split into two , partial rings along a dividing plane normal to an axis namely into a ring piece (3) , fixed to the hub and a ring crown (4) mounted to rotate coaxially relative to the above, and , an annular spring (5) enclosing the hub (1) with the circumferentially-opposed ends (6) resting on support webs (7, 8) embodied integrally with both partial rings, overlapping each other in the axial direction and arranged behind each other in , the circumferential direction of the toothed ring. In order to avoid any overload of , the partial …
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 March 21, 2005 and granted September 18, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 21, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.