Self-adjusting transformer sling
CA 2089931 A1 · Owner: Saulnier, Georges · Inventors: Saulnier, Mario; Saulnier, Georges
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The sling includes a telescopic compensation bar provided, with two pairs of lever arms pivotally mounted to the opposite ends respectively of the compensation bar. The lever arms pivotally engage at their bottom ends the integral sling hooks of the transformer to be lifted. Each of the two parallel plates of the telescopic bar has an intermediate ovoidal slit both slits, slidingly engaged by a transverse shaft. The shaft depends from a yoke suspended to the hoist gear cable. The two ovoidal slits are not parallel, but rather disposed in X-shaped fashion. Hence during lift, for a smaller transformer width the compensation bar, will automatically retract to a shorter overall length so as to, …
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 February 19, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 2015.
- 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.