Expandable collet
CA 1082666 A · Owner: Ppg Industries, Inc. · Inventors: Briar, Thomas J.; Reese, Walter J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A collet for winding strand material, such as glass strands is, disclosed. The collet is capable of expanding under fluid pressure to firmly grasp a tube on which the strand material is wound. The collet comprises a sealed chamber into which the fluid enters under pressure a piston which is movable by the fluid pressure expandable rings and, inexpandable spacers between the rings and at the end of the set of rings opposite the piston; the piston, rings and spacers being located along a, common shaft and arranged such that fluid entering the chamber forces the piston towards the rings and spacers creating pressure on the expandable rings and expanding them to …
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
- Granted July 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 29, 1997.
- 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.