Apparatus for axially positioning the roll shell in a hydrostatically loaded controlled deflection roll
CA 2197663 C · Owner: Mitsubishi Heavy Industries, Ltd. · Inventors: Brown, Dale A.; Roerig, Arnold J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A controlled deflection roll (1) has a rod shell (2) which is hydrostatically radially supported by internally disposed hydrostatic shoes. In order to axially position the roll shell (2) a mechanical location link (23) is provided which is disposed externally of the roll shell (2). The link is coupled at one end to an element attached to the roll shell (2) and is, coupled at an opposite end to a fixed support such as a floor, stand (7). The end of the roll at which the locating link (23) is disposed is thus axially fixed, while the opposite end of the roll remains free to float. The locating link (23) can be connected to an oscillator to oscillate the roll shell (2) axially during operation …
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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 August 10, 1995 and granted January 30, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 10, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 10, 2017.
- 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.