1830987

Information

• Patent Grant
• 1830987

• References
• Source

• Patent Number

  1,830,987

• Date Filed

  Not available

• Date Issued

  Tuesday, November 10, 1931
  93 years ago

• CPC

  • G05B1/08 - stepwise sensing
  • G01D5/10 - Applying external forces to increase force available for operation of indicating or recording part
  • G01R1/02 - General constructional details
  • G01R1/08 - Pointers Scales Scale illumination
  • G01R17/04 - in which the reference value is continuously or periodically swept over the range of values to be measured
  • H03J1/08 - Toothed-gear drive Worm drive
  • Y10T74/22 - Miscellaneous

• US Classifications

  • 116 - Signals and indicators
  • 033 - Geometrical instruments
  • 074 - Machine element or mechanism
  • 200 - Electricity: circuit makers and breakers
  • 346 - Recorders