Tool for making convolution wire decorative elements
CA 1057166 A · Owner: Buchanan, Grace E. · Inventors: Buchanan, Grace E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stem is surmounted by an upwardly and inwardly tapered forming portion having anchoring pins extending upwardly from the apex. One end of a piece of flexible wire is detachably anchored between the pins and the tool is rotated slowly so that the wire is wound around the one end to form a convolute spiral type element. The plan view shape of the element is controlled by the plan view shape of the one end. The formed element is then removed from the one end and used in the manufacture of costume jewellery and the like.
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 June 26, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 26, 1996.
- 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.