2931462

Information

• Patent Grant
• 2931462

• References
• Source

• Patent Number

  2,931,462

• Date Filed

  Not available

• Date Issued

  Tuesday, April 5, 1960
  65 years ago

• CPC

  • B66B13/26 - between closing doors
  • G05D3/00 - Control of position or direction
  • G05B2219/34036 - Saturable reactor
  • G05B2219/41329 - Dc motor
  • G05B2219/43079 - Acceleration, deceleration controlled by switches along path
  • G05B2219/45242 - Door, panel, window operation, opening, closing
  • G05B2219/49141 - Detect near collision and slow, stop, inhibit movement tool

• US Classifications

  • 187 - Elevator, industrial lift truck, or stationary lift for vehicle
  • 318 - Electricity: motive power systems