Cam tooth starter pinion
CA 2111366 A1 · Owner: Ingersoll-Rand Company · Inventors: Mills, Floyd D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A drive pinion for an engine starting motor having a lead-in chamfer of the starter pinion defined by a geometry formed by rotating the radial gear tooth involute form through 90 degrees across the end of the tooth. The radius and axis of rotation are selected such that the cam surface is full across the height of the tooth and the cam surface intersects the back side of the tooth at the leading edge of the tooth.
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 December 14, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 14, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 14, 2015.
- 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.