Patent Yard Sign in
Expired Canadian patentCanada

Trouble detecting circuit for resistive sensor type indicator

CA 1258093 A · Owner: Yazaki Corporation · Inventors: Ohishi, Shigeru

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

In a resistive-sensor type indicator having a resistive sensor whose resistance changes according to a quantity to be measured and an indicator for indicating a sensor output voltage developed across the resistive sensor, when the resistive sensor is open due to disconnection or malconnection of the resistive sensor the, indicator indicates a maximum reading thus resulting in a, problem such that the user cannot recognize the abnormal state. To overcome this problem, a novel trouble detecting circuit is additionally incorporated in the indicator. The circuit comprises a comparator for outputting an abnormal signal when the sensor voltage exceeds a reference voltage and a transistor for …

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 August 1, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 1, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 27, 1987
GrantedAugust 1, 1989
Term endedAugust 1, 2006
Patent numberCA 1258093 A
Classification (IPC)G01R35/00

Timeline

Timeline From CIPO dates

1988199019921994199619982000200220042006Application filedJuly 27, 1987Patent grantedAug 1, 1989Term endedAug 1, 2006

Sources & verification

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