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Expired Canadian patentCanada

Internally mounted drive mechanism for a belt-winding drum

CA 1282730 C · Owner: Hodgetts, Graham L. · Inventors: Hodgetts, Graham 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 internally mounted rotary drum drive mechanism optimizes the space within a drum by utilizing a rim-mounted, motor-driven rotating gearbox for applying torque to the drum through a split ring-type mounting flange releasably secured between the gearbox and an internal wall of the drum. Radial screws extend through the wall of the drum for releasably attaching the mounting flange and axial screws attach the mounting flange to the gearbox housing. A motor mounting flange locates the motor in driving position adjacent the gearbox and the motor mounting flange is provided with a peripheral notch for obtaining access to the gearbox mounting flange fasteners during assembly and dismantling 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 April 9, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 9, 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.
FiledOctober 13, 1987
GrantedApril 9, 1991
Term endedApril 9, 2008
Patent numberCA 1282730 C
Classification (IPC)B65G23/08 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedOct 13, 1987Patent grantedApril 9, 1991Term endedApril 9, 2008

Sources & verification

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