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Expired Canadian patentCanada

Swaged collar fastener

CA 1323515 C · Owner: Sps Technologies, Inc. · Inventors: Dahl, Warren

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Predetermined limits are attained for the peak loads encountered when a composite assembly of workpieces is secured with a swaged collar fastener, by disposing cavities in the cylindrical wall of the fastener collar to receive material flow during the swaging operation. Rotation between the collar and pin of the fastener is precluded by disposing abutting portions on the pin, which interface against the swaged material of the collar. Fastener cost reductions are achieved by decreasing the volume of a post-swage scrap portion on the pin and by concurrently fabricating grooves thereon with a rolling die for, various functional purposes. Swaging tool malfunction is avoided by eliminating land …

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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 October 26, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 26, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 18, 1988
GrantedOctober 26, 1993
Term endedOctober 26, 2010
Patent numberCA 1323515 C
Classification (IPC)F16B19/05

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedAug 18, 1988Patent grantedOct 26, 1993Term endedOct 26, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.