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Expired Canadian patentCanada

Ratchet wrench handle

CA 1135540 A · Owner: Tracy, Kurt L. · Inventors: Tracy, Kurt L.

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 reversible ratchet wrench handle in which the actuator for the direction reversing mechanism is located close to the portion of the handle that is grasped by the user. This permits the user to operate the actuator with the thumb of the hand holding the handle whereby changing the direction of operation of the wrench is a one handed rather than a two handed operation. Locating the actuator near the hand grip portion of the handle also removes it from the head of the handle, the usual location and this allows the head, to be made thinner for better access to narrow places. The actuator for the direction reversing mechanism is a switch button that is movable back and forth axially 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 November 16, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 16, 1999.
  • 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 30, 1980
GrantedNovember 16, 1982
Term endedNovember 16, 1999
Patent numberCA 1135540 A
Classification (IPC)B25B13/46

Timeline

Timeline From CIPO dates

1981198319851987198919911993199519971999Application filedMay 30, 1980Patent grantedNov 16, 1982Term endedNov 16, 1999

Sources & verification

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