2439763

Information

• Patent Grant
• 2439763

• References
• Source

• Patent Number

  2,439,763

• Date Filed

  Not available

• Date Issued

  Tuesday, April 13, 1948
  76 years ago

• CPC

  • F04B53/141 - Intermediate liquid piston between the driving piston and the pumped liquid
  • A62C11/005 - Receptacles of extinguishing agent with manually operable pump
  • F04B9/14 - Pumps characterised by muscle-power operation
  • F04B23/023 - only the pump-part being immersed, the driving-part being outside the reservoir
  • F04B53/121 - the valve being an annular ring surrounding the piston
  • F04B53/122 - the piston being free-floating

• US Classifications

  • 417 - Pumps
  • 092 - Expansible chamber devices
  • 169 - Fire extinguishers
  • 222 - Dispensing