3921770

Information

• Patent Grant
• 3921770

• References
• Source

• Patent Number

  3,921,770

• Date Filed

  Not available

• Date Issued

  Tuesday, November 25, 1975
  49 years ago

• CPC

  • H02P5/50 - by comparing electrical values representing the speeds
  • H02K7/1125 - Magnetically influenced friction clutches and brakes

• US Classifications

  • 192 - Clutches and power-stop control
  • 112 - Sewing