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Expired Canadian patentCanada

Adjustable locking wrench

CA 1086998 A · Owner: Tasato, Noboru · Inventors: Tasato, Noboru

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 In a locking wrench designed to grip an object between a stationary and a movable jaw firmly under the action of a toggle link associated at one end with the movable jaw and at the other end with a threaded bolt, the movable jaw is divided into two separate parts, that is a body member, pivotally secured to the stationary jaw and a grip member supported on the body member for sliding movement relative thereto so that the distance between the grip faces of the grip member and the stationary jaw may be adjusted as desired. With this structure an optimum force of grip is readily, obtainable at all times for thickness s of the object to be gripped without the need of …

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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 7, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 7, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 25, 1977
GrantedOctober 7, 1980
Term endedOctober 7, 1997
Patent numberCA 1086998 A
Classification (IPC)B25B7/12

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedOct 25, 1977Patent grantedOct 7, 1980Term endedOct 7, 1997

Sources & verification

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