Saw chain
CA 1233729 A · Owner: Anderson, Margaret A. · Inventors: Anderson, Roy H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An anti-kickback saw chain having a drop-away articulated depth gauge link preceding each cutting or fibre removing link. The depth gauge surface of the depth gauge link is spaced forwardly of the cutting tooth and the trailing edge thereof is located aft of the pivotal connection with the cutting tooth link when the pivot points of the links are aligned. In one form of the invention, the link sequence utilize a V-shaped cutter tooth link followed by a generally L-shaped raker tooth link each being, preceded by a depth gauge link. In a second form each sequence, includes a half-V side mounted slitter tooth and a transversely inclined raker tooth for removing wedge shaped chips. Each said …
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 March 8, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 8, 2005.
- 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.