Composite, heavy-duty spool with plastic end cones
CA 1165297 A · Owner: Wyrepak Industries, Inc. · Inventors: Kovaleski, Joseph J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite, heavy-duty spool with plastic end cones, consisting of a cylindrical spool body of thick rigid, heavy cardboard having open ends and a pair of, plastic end cones. When dismantled the end cones can, nest in each other so as to occupy little space. Each end cone comprises a truncated, conical body portion all parts of which are essentially of uniform thickness. At its small base part, each body portion has a transverse wall that is apertured to receive a draft bolt and has a, plurality of integral strengthening ribs each of which is disposed both on the conical exterior and on the transverse wall exterior. The ribs lie in planes which pass through the axis of the body portion and …
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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
- Granted April 10, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2001.
- 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.