3788425

Information

• Patent Grant
• 3788425

• References
• Source

• Patent Number

  3,788,425

• Date Filed

  Not available

• Date Issued

  Tuesday, January 29, 1974
  51 years ago

• CPC

  • F15B13/042 - operated by fluid pressure
  • B66C13/18 - Control systems or devices
  • F15B11/16 - with two or more servomotors
  • B66C2700/06 - Cranes in which the lifting movement is done with a hydraulically controlled plunger
  • F15B2211/30505 - Non-return valves
  • F15B2211/322 - actuated by biasing means
  • F15B2211/324 - manually
  • F15B2211/329 - actuated by fluid pressure
  • F15B2211/50518 - using pressure relief valves
  • F15B2211/5157 - being connected to a pressure source and a return line
  • F15B2211/55 - for limiting a pressure up to a maximum pressure
  • F15B2211/615 - Filtering means
  • F15B2211/6355 - having valve means
  • F15B2211/67 - Methods for controlling pilot pressure
  • F15B2211/7058 - Rotary output members
  • F15B2211/71 - Multiple output members

• US Classifications

  • 182 - Fire escape, ladder, or scaffold
  • 060 - Power plants
  • 091 - Motors: expansible chamber type