3356918

Information

• Patent Grant
• 3356918

• References
• Source

• Patent Number

  3,356,918

• Date Filed

  Not available

• Date Issued

  Tuesday, December 5, 1967
  57 years ago

• CPC

  • G05B19/238 - the positional error is only used to control speed in steps according to distance left, or to give a stop signal when error reaches zero
  • G05B19/42 - Recording and play-back systems, i.e. in which the programme is recorded from a cycle of operations
  • G05D3/20 - using a digital comparing device
  • G05B2219/36591 - Tape moves synchronized with machine driven axis
  • G05B2219/41105 - Coarse fine
  • G05B2219/41472 - Servo loop with position error indicates speed step value

• US Classifications

  • 318 - Electricity: motive power systems
  • 340 - Communications: electrical
  • 346 - Recorders
  • 455 - Telecommunications