3831729

Information

• Patent Grant
• 3831729

• References
• Source

• Patent Number

  3,831,729

• Date Filed

  Not available

• Date Issued

  Tuesday, August 27, 1974
  50 years ago

• CPC

  • F16F1/326 - with a spiral-like appearance
  • B41J2/285 - of plunger type
  • B41J9/38 - Electromagnetic means
  • H01F7/13 - characterised by pulling-force characteristics
  • H01F7/1607 - Armatures entering the winding
  • H02K33/02 - with armature moved one way by energisation of a single coil system and returned by mechanical force

• US Classifications

  • 400 - Typewriting machines
  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets