Belt conveyor and conveyor belt therefore
CA 2008120 C · Owner: Tingskog, Lennart · Inventors: Tingskog, Lennart
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A conveyor belt of elastic material comprises a planar central part (2), two planar edge parts (3 4), and two hinge parts (5, 6). The central part is flexurally rigid about the longitudinal axis of the belt (1) by means of a transverse reinforcement (8 9b) and, has a low extensibility in the longitudinal direction by means of a longitudinal reinforcement (10). The two planar edge parts (3, 4) are each hingedly connected with a side edge of the central part and flexurally rigid about the longitudinal axis of the belt by means of a transverse reinforcement (8, 9a, 9c). The edge parts are further extensible in the longitudinal direction of the belt and have a total width which is at least …
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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 January 19, 1990 and granted June 1, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 19, 2012.
- 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.