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Expired Canadian patentCanada

Torque controlled clamp stick adapter

CA 1105066 A · Owner: Chance (A. B.) Company · Inventors: Mckelvy, Marvin D.; Myers, Franklin D.

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

Abstract of the Disclosure A torque limiting adapter for an elongated, insulative hot line clamp stick is provided which allows completely safe, accurate take-up of workpieces only to desired torque levels. The adapter preferably includes an elongated tubular, axially rotatable head removably mounted onto the work end of a conventional clamp stick and housing a torque-limiting device; the input of the device is connected to the existing rotatable clamp stick, while the torque output of the device is connected to a manipulative tool, such as a pivotal hook. The tool is coupled to the head such that they rotate in unison until the desired torque level is reached, and is further coupled for …

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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 July 14, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 1998.
  • 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 7, 1979
GrantedJuly 14, 1981
Term endedJuly 14, 1998
Patent numberCA 1105066 A
Classification (IPC)B25B33/00 +1 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedAug 7, 1979Patent grantedJuly 14, 1981Term endedJuly 14, 1998

Sources & verification

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