Patent Yard Sign in
Expired Canadian patentCanada

Electromagnetic clutch having a structure for reducing torsion

CA 1311200 C · Owner: Gonda, Hideyuki · Inventors: Gonda, Hideyuki

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

An electromagnetic clutch according to the present invention includes a first rotatable member made of magnetic material and a second rotatable member connected to a driven member. An annular magnetic member is slidably connected to the second rotatable member so that the annular magnetic member can be capable of axial movement within a limited range. The annular magnetic member faces the axial end surface of the first rotatable member with an axial air gap therebetween. An electromagnet is associated with the first rotatable member to attract the annular magnetic member to the axial end surface of the first rotatable member so that the rotational force of the first rotatable member is …

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

  • Granted December 8, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 8, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 24, 1989
GrantedDecember 8, 1992
Term endedDecember 8, 2009
Patent numberCA 1311200 C
Classification (IPC)F16D27/10 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedApril 24, 1989Patent grantedDec 8, 1992Term endedDec 8, 2009

Sources & verification

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