Offsetting link assembly for folding luffing jib
CA 2198953 C · Owner: Manitowoc Company, Inc. (The) · Inventors: Krajnik, Daniel L.; Wanek, Michael J.; Walker, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A crane boom and luffing jib assembly have an offsetting link to allow the luffing, jib to fold back and under the main boom for assembly of the boom and luffing jib, assembly on a construction site where the entire length of the boom and luffing jib cannot, be laid out during assembly. A method of assembling the crane boom and luffing jib, comprises the steps of assembling the luffing jib and boom the luffing jib , pivotally, attached to the jib connection pivot the luffing jib folded back and under the boom along, a ground surface, the hinged connection allowing neutral axis of the jib boom section to, be offset relative to the boom connection pivot; attaching the boom to a crane; …
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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 March 3, 1997 and granted October 10, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 3, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 3, 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.