3691440

Information

• Patent Grant
• 3691440

• References
• Source

• Patent Number

  3,691,440

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1972
  52 years ago

• CPC

  • G01P1/106 - by comparing the time duration between two impulses with a reference time
  • B23Q15/00 - Automatic control or regulation of feed movement, cutting velocity or position of tool or work
  • Y10S388/918 - Trigger by unijunction transistor

• US Classifications

  • 388 - Electricity: motor control systems
  • 318 - Electricity: motive power systems
  • 324 - Electricity: measuring and testing
  • 361 - Electricity: electrical systems and devices