Driving endless flexible belts
CA 1191185 A · Owner: Brockway Engineering Company Limited · Inventors: Wooldridge, Cyril S.; Wooldridge, Lawson C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a conveyor belt driven by linear induction motors positioned a predetermined distance from the lower portion of the belt and opposite a laminated section included in the belt and extending longitudinally thereof said laminated section consisting of an upper layer of a standard belt construction including a plurality of textile yarns embedded in rubber, a second layer of magnetic iron particles embedded in rubber a third layer of non-magnetic aluminium particles embedded in rubber and a fourth protective lower layer of rubber. The laminated section may be in the middle of the belt or may be located in the winy portions of the belt when the belt is to be used in a troughed …
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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 30, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 2002.
- 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.