2986124

Information

• Patent Grant
• 2986124

• References
• Source

• Patent Number

  2,986,124

• Date Filed

  Not available

• Date Issued

  Tuesday, May 30, 1961
  63 years ago

• CPC

  • F15B11/08 - with only one servomotor
  • E01B27/16 - Sleeper-tamping machines
  • F15B11/12 - providing distinct intermediate positions with step-by-step action with a number of pistons in a single cylinder step-by-step action obtained by combining two or more servomotors F15B11/18
  • F15B2211/30525 - Directional control valves
  • F15B2211/3138 - the positions being discrete
  • F15B2211/324 - manually
  • F15B2211/7653 - at distinct positions
  • F15B2211/853 - during stopping
  • F15B2211/8606 - the abnormal condition being a shock
  • F15B2211/8855 - Compressible fluids
  • Y10T137/8671 - With annular passage [e.g., spool]

• US Classifications

  • 091 - Motors: expansible chamber type
  • 137 - Fluid handling