2949894

Information

• Patent Grant
• 2949894

• References
• Source

• Patent Number

  2,949,894

• Date Filed

  Not available

• Date Issued

  Tuesday, August 23, 1960
  64 years ago

• CPC

  • B66C13/04 - Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
  • F15B11/072 - Combined pneumatic-hydraulic systems
  • F15B2211/216 - the pressure sources being pneumatic-to-hydraulic converters
  • F15B2211/30505 - Non-return valves
  • F15B2211/30525 - Directional control valves
  • F15B2211/3105 - Neutral or centre positions
  • F15B2211/324 - manually
  • F15B2211/40507 - with constant throttles or orifices
  • F15B2211/46 - Control of flow in the return lin
  • F15B2211/50554 - the pressure control means controlling a pressure downstream of the pressure control means
  • F15B2211/5151 - being connected to a pressure source and a directional control valve
  • F15B2211/75 - Control of speed of the output member
  • F15B2211/86 - Control during or prevention of abnormal conditions
  • F15B2211/8606 - the abnormal condition being a shock
  • F15B2211/8855 - Compressible fluids

• US Classifications

  • 091 - Motors: expansible chamber type