Cutting apparatus for a noncircular cross section
CA 1315576 C · Owner: Izumi Industries Ltd. · Inventors: Higuchi, Toshiro; Tanaka, Minoru; Izumi, Hajime
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cutting apparatus is provided for forming a noncircular cross-section on a workpiece that includes a tool advancing and retreating device. The tool advancing and retreating device includes a central shaft on which is to be mounted a tool, a journal for supporting the central shaft a, movable plate fixed to the central shaft and electromagnets, positioned opposite to one another such that the movable plate is interposed between the electromagnets with a clearance between the plate and the electromagnets. The journal that supports the central shaft includes a mount and a plurality of leaf springs which are secured to the central shaft and to a holder. The holder is also secured to the …
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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
- Granted April 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 6, 2010.
- 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.