Replaceable sprocket
CA 1065164 A · Owner: Westlake, Glen E. · Inventors: Westlake, Glen E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sprocket gear or pulley having an interchange-, able peripheral portion for replacement. The device has a hub with an axial boss, an annular member having teeth or a groove along its outer rim and located concentrically on the boss, and a cap or a collar to hold the annular member immovable on the boss. The annular member may be segmented. The inner rim of the annular member and the boss may be threaded or splined for interengagement.
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 30, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 30, 1996.
- 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.