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Expired Canadian patentCanada

Handle socket adapter

CA 1284409 C · Owner: Bristol-Myers Company · Inventors: Lewis, John C. Jr.

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 socket adapter for use with a broom block the socket, adapter for receiving a threaded handle such that the release torque required to remove the handle is aggrandized i.e. greater than the, application torque required to attach the handle. The socket adapter comprises a tube having an annular lip for abutting against a corresponding lip adjacent the threads of the handle and at least one thread on the tube. The thread begins a predetermined distance below the annular lip such that an expansion space is formed above the thread to provide a space into which the handle thread material may expand. Upon tightening the handle in the socket adapter with a predetermined amount of attachment …

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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 May 28, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 28, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 20, 1987
GrantedMay 28, 1991
Term endedMay 28, 2008
Patent numberCA 1284409 C
Classification (IPC)F16B9/00 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJan 20, 1987Patent grantedMay 28, 1991Term endedMay 28, 2008

Sources & verification

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