Power trowel handle mounted controls
CA 2261156 A1 · Owner: Hodgson, James A. · Inventors: Hodgson, James A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A power trowel handle (50) has controls that permit electronically operating the functions of an engine (12) on the power trowel (10) from the handle (50). The engine (12) includes a servo controlled carburetor (80) which will permit a circuit (66) to close and inject a quantity of fuel for starting a two cycle engine (12), which normally has to be done manually as well as permitting , control of a throttle (88) using a trigger switch (54) on the handle. The power trowel (10) further has an elongated pole (26) braced with a slider (40) to prevent twisting under torque and to permit better control of the power trowel (10) from a remote handle (50). The handle grip (50) is usable in …
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 July 10, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2019.
- 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.