Flanged spool made of plastic, in particular for the taking-up of glass fiber yarns
CA 2026097 C · Owner: Hallmann, Franz · Inventors: Illig, Heinz-Peter; Hallmann, Franz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flanged spool made of plastic, in particular for the taking-up of glass fiber yarns, has an essentially cylindrical jacket (1) which forms a winding surface with a flange (3) extending radially outwards on one end and a concentric collar (9) with a reduced diameter on the other end and with a supporting element (11) inside the jacket (1) which has a central guide bush (12) designed to be radially flexible and elastic in a peripheral area (16) facing the end with the flange (3) (bottom end). This flexibility reliably ensures that the peripheral area (16) fits closely on a receiving lug, thus improving the rotating and the load bearing qualities.
Read the whole patent
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 September 24, 1990 and granted June 23, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 24, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 24, 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.