Lawn mower height-adjust systems
CA 2090044 A1 · Owner: Hess, Kristoffer A. · Inventors: Hess, Kristoffer A.; Jackson, Ronald A.; Hare, Ronald G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Lawn mower height-adjust systems include three embodiments. Two permit the user to adjust the position of the deck relative to each wheel individually. The third permits the user to adjust the positions of all four wheels simultaneously, aided by a counterbalance system. A modification of the third embodiment is available to automatically bypass the height-adjust mechanism in the event an abnormally high load is placed on the deck. One of the two individual systems permits an operator to adjust the position of a respective wheel simply by removing a single nut and washer from an axle bolt. The second individual height-adjust system permits the operator to adjust the height of an individual …
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 April 24, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 24, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 2013.
- 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.