Simplified bump-feed type cutting head assembly for flexible line trimmers
CA 2023714 A1 · Owner: Collins, Imack L. · Inventors: Collins, Imack L.; Desent, Nash S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
EAI, ?7501, ABSTRACT, A compact, light weight structurally simplified bump-, feed type cutting head for a flexible line trimmer is formed from only six components - a hollow cylindrical hub having an open lower end; an annular cover member releasably securable over the lower hub end; a threaded arbor press-fitted into the hub to secure it to the trimmer drive shaft for rotation therewith; a hollow tubular release button member slidably extended through the central cover member opening and axially movable between downwardly extended and upwardly retracted positions; a line storage spool rotatable carried by the release button member within the hub; and a cylindrically coiled compression …
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 August 21, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 21, 2012.
- 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.