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Expired Canadian patentCanada

Triple cone synchronizer with servo action

CA 1324330 C · Owner: Frost, Barry L. · Inventors: Frost, Barry 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

An improved multi-cone strutless synchronizer has one or more cone rings concentrically disposed intermediate an outer blocker ring and an inner exterior cone surface of a ratio gear journally supported on a speed shaft. The cone ring is formed with a plurality of longitudinally extending drive tangs projecting into an associated window of the ratio gear. Each drive tang is symmetrical about its longitudinal centerline defining a pair of back-angled cam edges diverging outwardly at an acute angle from the centerline. Each window has a side wall disposed in spaced parallel relation with an associated tang cam edge and adapted to be slidably engaged thereby upon the synchronizer sleeve being …

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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, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 16, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 27, 1987
GrantedNovember 16, 1993
Term endedNovember 16, 2010
Patent numberCA 1324330 C
Classification (IPC)F16D23/06

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedNov 27, 1987Patent grantedNov 16, 1993Term endedNov 16, 2010

Sources & verification

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