Pin for a fastener and method of making same
CA 1287758 C · Owner: Alvi, Zia Raheem · Inventors: Hiblen, Christopher Robin; Alvi, Zia Raheem
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
P.309, ABSTRACT, A headed steel pin (10) for a multi-grip fastener of the pin and swageable collar (12) type has a homogeneous microstructure, and consists substantially entirely of sorbitic tempered martensite. Suitable coarse-grained medium carbon steel is shaped to form a headed pin (10) having a plurality of identical regularly spaced, annular, combination grooves (22) each able to function alternatively as a locking groove a, pulling groove, or a breaker groove. The shaped pin (10) is heat treated, the steel being rendered homogeneously martensitic and then tempered at a temperature approaching as closely as practicable to the lower critical temperature of the steel, to convert the …
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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 August 20, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 20, 2008.
- 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.