Pressure filters
CA 1162152 A · Owner: English Clays Lovering Pochin & Company Limited · Inventors: Eggleston, David; Gwilliam, Ralph D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tube pressure filter comprises (a) a pair of generally coaxial inner and outer tubular assemblies which define between them a chamber of annular crosssection, (b) an impermeable elastic sleeve which divides said chamber into non-intercommunicating inner and outer compartments, (c) a filter element,(d) a slurry inlet extending annularly around one of the tubular assemblies for feeding a slurry to said inner compartment (e) a, hydraulic fluid inlet/outlet for feeding hydraulic fluid to and withdrawing hydraulic fluid from the outer compartment, (f) filtrate discharge means for the discharge of filtrate which has passed through the filter element and through apertures in the inner tubular …
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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 February 14, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 14, 2001.
- 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.