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Device for producing an optical or acoustic shift instruction

  • US 4,438,423 A
  • Filed: 02/22/1982
  • Issued: 03/20/1984
  • Est. Priority Date: 03/09/1981
  • Status: Expired due to Fees
First Claim
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1. In a device for producing an optical or acoustic shift instruction in which a speed-of-rotation signal is fed to a first threshold switch for connecting an upshift signal indicator and to a second threshold switch for connecting a downshift signal indicator, the device being adapted to cooperate with a gas pedal of a vehicle, the improvement comprisingan AND gate arranged behind the first threshold switch,a gas-pedal position switch being connected to said AND gate at an input side of the latter such that when the gas pedal is depressed only slightly it is connected to the upshift signal indicator, andmeans comprising a third threshold switch in parallel to the two other said threshold switches, being connected directly with said upshift signal indicator and for becoming conductive when the maximum permissible speed of rotation is reached.

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