Hanger for use in conveyors
CA 2087653 C · Owner: Nakanishi Metal Works Co. Ltd. · Inventors: Wakabayashi, Takao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hanger for use in conveyors comprises an upper frame suspendable from a free trolley a lower, frame for loading thereon the article to be transported and a pair of front and rear arms interconnecting the upper and lower frames and so inclined as to approach each other as the arms extend toward lower ends thereof. The arms have upper ends pivotably connected to the upper frame and have their lower ends pivotably connected to the lower frame. The front and rear arms the, portion of the upper frame between the arm upper ends and the portion of the lower frame between the arm lower ends are connected together in the form of a trapezoid which is shorter at its lower side than at its upper side …
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 January 20, 1993 and granted April 15, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 20, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 20, 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.