3474231

Information

• Patent Grant
• 3474231

• References
• Source

• Patent Number

  3,474,231

• Date Filed

  Not available

• Date Issued

  Tuesday, October 21, 1969
  55 years ago

• CPC

  • H03M1/00 - Analogue/digital conversion Digital/analogue conversion
  • G05B19/291 - the positional error is used to control continuously the servomotor according to its magnitude
  • G06F7/02 - Comparing digital values
  • G06K7/10 - by electromagnetic radiation
  • G05B2219/50189 - Compare position of slide with positioning, tape data
  • H03M2201/01 - First edition
  • H03M2201/122 - Servo-systems for D/A conversion
  • H03M2201/128 - using a servomotor as analogue generator
  • H03M2201/194 - Control systems
  • H03M2201/2111 - using a pure representation
  • H03M2201/2185 - Photoelectric
  • H03M2201/412 - representing linear position
  • H03M2201/4125 - representing angular position
  • H03M2201/4225 - Parallel
  • H03M2201/4233 - Bivalued
  • H03M2201/4266 - Decimal radix
  • H03M2201/4279 - Pure
  • H03M2201/60 - Fidelity improvement
  • H03M2201/6121 - Automatic
  • H03M2201/81 - Electrical components
  • H03M2201/8192 - Photoelectric devices
  • H03M2201/853 - Reduction gearings
  • H03M2201/93 - Constructional details
  • Y10T82/141 - having transverse tool and templet guide
  • Y10T409/300896 - with sensing of numerical information and regulation without mechanical connection between sensing means and regulated means [i.e., numerical control]

• US Classifications

  • 340 - Communications: electrical
  • 034 - Drying and gas or vapor contact with solids
  • 082 - Turning
  • 250 - Radiant energy
  • 318 - Electricity: motive power systems
  • 324 - Electricity: measuring and testing
  • 341 - Coded data generation or conversion
  • 409 - Gear cutting, milling, or planing