Battery-powered walk-behind greensmower
CA 2443818 A1 · Owner: Dettmann, Benjamin D. · Inventors: Dettmann, Benjamin D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A greensmower having a cutting reel and a traction member and an independent electric circuit and motor for driving each. A handle is attached to the reel for mower, guidance by an operator in a walk-behind position. Separate electric controls are, connected to each motor for separate speeds for each motor and thereby control the, clip rate of the mowing. There are low battery power read-outs and automatic shutoffs. Provision is made for traction powering of the mower even when the reel motor is not, operating because of low battery power. A lift-out battery pack is shiftably mounted on, the mower for producing the desired force of the mower on the ground.
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 October 1, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 1, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 2025.
- 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.