Ceramic conveyor roller having flat-sided spring retainer for non-rotatably mounting end caps to roller
CA 2116627 A1 · Owner: Daily, Alan W. · Inventors: Daily, Alan W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A conveyor roll for conveying heated glass sheets along a conveyor assembly is provided that comprises a fused silica roller having opposing cylindrical ends, a pair of end caps formed from a machinable steel which may be heat resistant for rotatably mounting the ceramic roller within a conveyor assembly, wherein each end cap has a tubular wall for receiving and surrounding one of the cylindrical ends of the roller and a spring, retainer for non-rotatably mounting each of the end caps to the roller. Each spring retainer includes a coil spring formed from flat sided coils helically wound around a cylindrical end of the roller each of which coils, includes bent portions and straight portions …
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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 February 28, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 28, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 28, 2016.
- 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.