Patent Yard Sign in
Expired Canadian patentCanada

Compound transmission having hybrid single and twin countershafts

CA 2123444 C · Owner: Eaton Corporation · Inventors: Stine, Alan Charles

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

A "5x2" compound transmission is disclosed. A main section includes a mainshaft and two countershafts. The mainshaft has a spool gear rotatably mounted thereon and reverse and four forward gears rotationally fixed thereto. A first clutch splined on the first countershaft couples one of two countershaft gears rotatably engaged with a mainshaft gear to the first countershaft. A second clutch splined on the second countershaft couples one of two countershaft gears rotatably engaged with the other mainshaft gears to the second countershaft. An auxiliary section includes an output shaft and third and fourth countershafts. The third and fourth countershafts are concentric with the first and …

Read the whole patent

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

  • Filed May 12, 1994 and granted February 22, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 12, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 12, 2016.
  • 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 12, 1994
GrantedFebruary 22, 2000
Term endedMay 12, 2014
Patent numberCA 2123444 C
Classification (IPC)F16H3/09

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedMay 12, 1994Patent grantedFeb 22, 2000Term endedMay 12, 2014

Sources & verification

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