Leaf spring cambering method and apparatus
CA 2018903 C · Owner: Kabushiki Kaisha Morita And Company · Inventors: Morita, Motoo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a method and an apparatus for cambering a leaf spring by pressing a heated leaf spring material between a pair of molds, characterized in that said pair of molds each comprise a plurality of mold fingers which can be advanced or retracted relative to the opposite mold by operating a plurality of drive means connected to said plurality of mold fingers based on a predetermined command given from a control means to advance or retract said fingers to required heights respectively, so that the free ends of the mold fingers as a whole may form a required mold surface; and each mold finger is locked with a releasable locking means. The cambering apparatus may further comprise a …
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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 June 13, 1990 and granted February 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 13, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 13, 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
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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.