3814265

Information

• Patent Grant
• 3814265

• References
• Source

• Patent Number

  3,814,265

• Date Filed

  Not available

• Date Issued

  Tuesday, June 4, 1974
  50 years ago

• CPC

  • F15B11/17 - using two or more pumps
  • B66C13/18 - Control systems or devices
  • E02F9/2203 - Arrangements for controlling the attitude of actuators
  • B66C2700/06 - Cranes in which the lifting movement is done with a hydraulically controlled plunger
  • F15B2211/20538 - constant capacity
  • F15B2211/20576 - with multiple pumps
  • F15B2211/30535 - the pressure compensating valve is arranged between pressure source and directional control valve
  • F15B2211/31 - characterised by the positions of the valve element
  • F15B2211/3122 - Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
  • F15B2211/40507 - with constant throttles or orifices
  • F15B2211/40546 - with flow combiners
  • F15B2211/428 - actuated by fluid pressure
  • F15B2211/45 - Control of bleed-off flow
  • F15B2211/50509 - the pressure control means controlling a pressure upstream of the pressure control means
  • F15B2211/5155 - being connected to multiple output members
  • F15B2211/6054 - using shuttle valves
  • F15B2211/65 - Methods of control of the load sensing pressure
  • F15B2211/67 - Methods for controlling pilot pressure
  • F15B2211/7058 - Rotary output members
  • F15B2211/7128 - the chambers being connected in parallel
  • F15B2211/7142 - the output members being arranged in multiple groups
  • F15B2211/715 - having braking means

• US Classifications

  • 212 - Traversing hoists