Chain saw guide bar
CA 2062074 A1 · Owner: Okamoto, Kenji · Inventors: Okamoto, Kenji; Okamoto, Kenji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This disclosure relates to a guide bar for a chain saw, wherein easily formed multiple through-holes are provided in a guide bar for the purpose of reducing the weight of the guide bar. A synthetic resin material fills the through-holes and is prevented from falling out of the guide bar by locking parts at the margins of the holes. In the process of making the guide bar after multiple through-holes 2 are provided in a guide bar, the areas around the through-holes 2 are compressed so that they undergo plastic deformation and form the locking parts 5. Then the synthetic resin material 7 is injected into these through-holes 2 and allowed to harden so that it becomes an integrated construction …
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 February 28, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 28, 2014.
- 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.