Automatic lifting angle adjuster for lifting wire rope
CA 2044157 C · Owner: Chaen, Yoshinobu · Inventors: Sato, Masanori; Hiyama, Katsuyuki; Chaen, Yoshinobu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An automatic lifting angle adjuster for lifting wire rope having expandable arm members 12 which are connected to an expanding driving means 11 at the center thereof and fixing means 21 which is attached to the top end portion of each arm member 12, and provided with rope-fixing member 23 each of which fixes a wire rope 20, rope guide members 24 through each of which the wire rope 20 passes and tension springs 25 each of which connects each of them wherein the, rope guide member 24 is rotated inside and outside of arm member 12 for hooking a load to be lifted and for removing by itself from the transported load. And an automatic, lifting angle adjuster for lifting wire rope having an …
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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 September 29, 1990 and granted July 2, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 29, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 2012.
- 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.