A method and apparatus for manufacturing a flexible abrasive hone
CA 2087901 C · Owner: Rands, Tara · Inventors: Fowlie, Robert G.; Rands, Tara
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The method and apparatus enables enlarged multiphase globules 65 to be firmly and non-detachably mounted on tip end portions of flexible hone bristles 55, By one method aspect, a first coating 90 of an at least semi-liquid, controllably hardenable adhesive matrix material 85a is applied to each tip end portion 60 of the bristles in a desired lamina thickness, as determined in part by the natural retention characteristics of the coated bristle tip end portions 60. each first coating 90 is fixed and immobilized relative to its bristle tip end portion 60 whereby to substantially inhibit and prevent displacement of excess liquid, or partly liquid portions of said matrix material 85a from …
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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 22, 1993 and granted December 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 22, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 22, 2015.
- 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.