Power wheel for a trailer tongue jack
CA 2452859 A1 · Owner: Fine, Boyce · Inventors: Fine, Boyce
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved jack for horizontally extending trailer tongue (22) including a bracket (30) attached to the trailer tongue (22) a longitudinal shaft , pivotally supported to the bracket (30) and pivotal between a substantially vertical position and a substantially horizontal position a wheel housing , (42) supported at a lower end of the shaft a wheel (46) rotatably supported , by the housing (42) a lower portion of the shaft (40) being rotatable about a shaft longitudinal axis, a crank arm (58) rotatably extending from said wheel housing (42) and having a drive gear (62) thereon and a driven gear (56) , affixed to the wheel (46) the driven gear (56) being coupled for rotation when the …
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 December 31, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 31, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 31, 2024.
- 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.