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Expired Canadian patentCanada

Multifunctional energy-saving system for vehicles

CA 2087924 C · Owner: Hitop Science Technology (Shenzhen) Co. Ltd. · Inventors: Gao, Xinglong

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

A multifunctional energy-saving system for vehicles is composed of automatic clutch means (1) and control means (2) The automatic clutch means mainly comprises a shaft (4) with a regular prismatic section (5), a hub (6) a synchronous cage, (10) with torque-transmitting elements (12).When the speed of the shaft is higher than that of the hub torque is transmitted, between them through said elements (12). When the speed of the shaft becomes lower than that of the hub no torque is, transmitted between them. The shaft can be engaged with the hub as required at any time responding to the control means. The energy consumption can be considerably reduced by means of the present system. When the …

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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

  • Filed January 22, 1993 and granted April 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 22, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 22, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 22, 1993
GrantedApril 8, 2003
Term endedJanuary 22, 2013
Patent numberCA 2087924 C
Classification (IPC)F16H29/00 +2 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedJan 22, 1993Patent grantedApril 8, 2003Term endedJan 22, 2013

Sources & verification

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