3623389

Information

• Patent Grant
• 3623389

• References
• Source

• Patent Number

  3,623,389

• Date Filed

  Not available

• Date Issued

  Tuesday, November 30, 1971
  53 years ago

• CPC

  • B30B1/16 - operated by fluid-pressure means
  • B21D24/14 - pneumatically or hydraulically
  • B21D28/00 - Shaping by press-cutting Perforating
  • B21D28/002 - Drive of the tools
  • B30B15/16 - Control arrangements for fluid-driven presses
  • F15B11/036 - by means of servomotors having a plurality of working chambers
  • F15B2211/20538 - constant capacity
  • F15B2211/30505 - Non-return valves
  • F15B2211/30525 - Directional control valves
  • F15B2211/327 - electrically or electronically
  • F15B2211/40515 - with variable throttles or orifices
  • F15B2211/41509 - being connected to a pressure source and a directional control valve
  • F15B2211/45 - Control of bleed-off flow
  • F15B2211/50518 - using pressure relief valves
  • F15B2211/50536 - using unloading valves controlling the supply pressure by diverting fluid to the return line
  • F15B2211/5151 - being connected to a pressure source and a directional control valve
  • F15B2211/5152 - being connected to multiple pressure sources
  • F15B2211/6309 - the pressure being a pressure source supply pressure
  • F15B2211/6336 - representing a state of the output member
  • F15B2211/7052 - Single-acting output members
  • F15B2211/7053 - Double-acting output members
  • F15B2211/7107 - the output members being mechanically linked
  • F15B2211/775 - Combined control
  • Y10T83/8827 - Means to vary force on, or speed of, tool during stroke
  • Y10T83/8845 - Toggle links, one link pivoted to tool support
  • Y10T83/8866 - Offset cutter

• US Classifications

  • 083 - Cutting