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Expired Canadian patentCanada

Spring compressor

CA 1188489 A · Owner: Kloster, Kenneth D. · Inventors: Kloster, Kenneth D.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

The present invention relates to a tool for compressing a helical spring of the type typically used in a MacPherson strut suspension system. The tool comprises a pair of spaced apart shoes each having a helical groove formed therein for engaging a portion of the coil of the spring. Each shoe also includes a latchable locking device extendable over the respective helical groove for maintaining the coil of the spring within the groove during the compression operation. The two shoes are maintained in a spaced apart relationship with the associated grooves in facing relation to one another by means of a threaded shank member. The threaded shank member is employed to effect movement of 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 June 11, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 11, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 4, 1982
GrantedJune 11, 1985
Term endedJune 11, 2002
Patent numberCA 1188489 A
Classification (IPC)B25B27/30

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedMarch 4, 1982Patent grantedJune 11, 1985Term endedJune 11, 2002

Sources & verification

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