3452428

Information

• Patent Grant
• 3452428

• References
• Source

• Patent Number

  3,452,428

• Date Filed

  Not available

• Date Issued

  Tuesday, July 1, 1969
  55 years ago

• CPC

  • H01F7/14 - Pivoting armatures
  • G01N1/18 - with provision for splitting samples into portions
  • H01F7/08 - with armatures
  • H01H71/7463 - Adjusting only the electromagnetic mechanism
  • H02J7/18 - due to variation of ohmic resistance in field circuit, using resistance switching in or out of circuit step by step
  • H02J7/225 - characterised by the mechanical construction
  • H04M19/02 - providing ringing current or supervisory tones
  • Y10T29/49004 - including measuring or testing of device or component part
  • Y10T29/49105 - Switch making
  • Y10T29/49771 - Quantitative measuring or gauging
  • Y10T29/49776 - Pressure, force, or weight determining

• US Classifications

  • 029 - Metal working
  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets