Bristle sub-assemblies having parallel pairs of bristles; and methods of making same
CA 2387165 A1 · Owner: Edwards, Mark Stephen · Inventors: Edwards, Mark Stephen; Reed, Winship Stinson, Iii; Brown, Robert Maurice
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for forming bristle sub-assemblies includes a vertically oriented slot, which is formed by two endless belts (52 54). A wheel (76) disposed , above the slot pushes a bristle string into the slot. The bristle string has a plurality of bristles connected to a base string in two rows. The bristle rows can be horizontally oriented, so that all of the bristles are co-planar in a horizontal plane, or they can be angularly oriented with the base string at the vertex of the angle. When the bristles are pushed into the slot they bend , to adopt a new, substantially parallel orientation. An ultrasonic heater (80) heats the bent bristles to re-set the thermoplastic material 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 December 6, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 6, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 6, 2022.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.