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Expired Canadian patentCanada

Internal shoe drum brake

CA 1062179 A · Owner: Nissan Motor Co. Ltd. · Inventors: Tanbara, Masakazu; Hoshino, Kazuo

CIPO record

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Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Internal shoe drum brake comprises a pair of brake shoes, a return spring means, a service brake a manually, actuated auxiliary brake including an actuating lever with a finger and an adjustable, in length, strut. The latter includes relatively rotatable screw threaded parts, i.e. a screw-threaded spindle slidably received in a tube member a ratchet wheel in, threaded engagement with the spindle and stopper held in yielding contact with the wheel, so that the strut is adjustable in length to adjust shoe clearances a pivoted, adjusting lever with a pawl tooth for effecting rotation of the ratchet wheel relative to the spindle upon brake application by the auxiliary brake, and a prestressed …

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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 September 11, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 11, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedSeptember 11, 1979
Term endedSeptember 11, 1996
Patent numberCA 1062179 A
Classification (IPC)F16D65/56 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedSep 11, 1979Term endedSep 11, 1996

Sources & verification

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