Rotary processors and seals
CA 1257624 A · Owner: Farrel Corporation · Inventors: Valsamis, Lefteris N.; Mehta, Pradip S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel rotary processors including sealing means to control leakage of pressure and/or material between processing passages which are maintained at significantly different pressure levels. The processors comprise a rotatable element carrying a plurality of annular channels and a stationary element providing a coaxial. closure surface operationally arranged with -the channels to provide enclosed processing passages. Each passage includes inlet means outlet, means and a channel blocking member all associated with the stationary element and arranged and adpated so that material fed to the inlet can be carried forward by the rotatable channel walls to the blocking member for discharge from 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 July 18, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 18, 2006.
- 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.