Lawn mower having independent drive wheel suspension and a movable cutter deck coupled to wheel motion
CA 2273790 A1 · Owner: Gordon, Todd B. · Inventors: Gordon, Todd B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mower (18) has a pair of front caster wheels (22) and a pair of independently suspended rear drive wheels (30). Each drive wheel is mounted on the shaft of a separate drive motor which is fastened to motor mount (49). Each motor mount is connected to the chassis (22) by means of pivotable links (42, 44), to enable up and down wheel motion respectively resisted and , assisted by springs (56). The cutter deck (24) hangs from two front chain suspenders (74) and two rear suspenders (76). The upper ends of the suspender pairs are connected respectively to bell cranks (72 70). Each rear bell crank , (72) is mounted on bracket (55) which is attached to the motor mount (49). Thus, when any …
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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 October 28, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 28, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 2020.
- 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.