3829828

Information

• Patent Grant
• 3829828

• References
• Source

• Patent Number

  3,829,828

• Date Filed

  Not available

• Date Issued

  Tuesday, August 13, 1974
  50 years ago

• CPC

  • B60Q1/54 - for indicating speed outside of the vehicle
  • B60Q1/143 - combined with another condition
  • G01P1/103 - by comparing the value of the measured signal with one or several reference values
  • G01P1/11 - by the detection of the position of the indicator needle
  • G01P3/4807 - by using circuits for the detection of the pulses delivered by the ignition system of an internal combustion engine
  • B60Q2300/052 - Switching delay
  • B60Q2300/112 - Vehicle speed

• US Classifications

  • 340 - Communications: electrical
  • 180 - Motor vehicles