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Expired Canadian patentCanada

Multiple control circuit

CA 1304768 C · Owner: Makino, Fumio · Inventors: Makino, Fumio

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 multiple control circuit is for use with an anti-lock brake control assembly. It includes a plurality of control logic circuits and an output decision circuit. The control circuits simultaneously receive redundant sensor signals representative of wheel speeds and carry out logical operations based upon the input signals to simultaneously transmit redundant command signals to control the brake pressure of the wheels. Such output signals are not directly sent to actuators, such as brake pressure control valve, but are instead sent through the output decision circuit. If the command signals of the control circuits should be different for some reason the output, decision circuit …

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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 July 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 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.
FiledMarch 16, 1988
GrantedJuly 7, 1992
Term endedJuly 7, 2009
Patent numberCA 1304768 C
Classification (IPC)B60T8/62 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMarch 16, 1988Patent grantedJuly 7, 1992Term endedJuly 7, 2009

Sources & verification

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