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Expired Canadian patentCanada

Rolling bias spring

CA 1182846 A · Owner: Teletype Corporation · Inventors: Menden, Thomas J.

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

A linear positioning device having a carriage slidAbly mounted on a guide rail incorporates a rolling bias spring located in a movable pocket formed by the carriage and the guide rod. The spring is formed with a flexible band material in a loop which is affixed to the carriage and is arranged to roll along the guide rod while exerting a force separating the carriage and the guide rod.

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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 February 19, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 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.
FiledMay 28, 1982
GrantedFebruary 19, 1985
Term endedFebruary 19, 2002
Patent numberCA 1182846 A
Classification (IPC)G11B21/08 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedMay 28, 1982Patent grantedFeb 19, 1985Term endedFeb 19, 2002

Sources & verification

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