3749994

Information

• Patent Grant
• 3749994

• References
• Source

• Patent Number

  3,749,994

• Date Filed

  Not available

• Date Issued

  Tuesday, July 31, 1973
  51 years ago

• CPC

  • G01P1/103 - by comparing the value of the measured signal with one or several reference values
  • B60K31/042 - where at least one electrical quantity is set by the vehicle operator
  • B60K31/18 - including a device to audibly, visibly, or otherwise signal the existence of unusual or unintended speed to the driver of the vehicle
  • G01P1/106 - by comparing the time duration between two impulses with a reference time
  • H02P7/2855 - whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
  • B60W2050/021 - Means for detecting failure or malfunction
  • B60W2050/143 - Alarm means
  • B60W2540/12 - Brake pedal position

• US Classifications

  • 318 - Electricity: motive power systems
  • 246 - Railway switches and signals
  • 303 - Fluid-pressure and analogous brake systems
  • 340 - Communications: electrical
  • 361 - Electricity: electrical systems and devices