2857493

Information

• Patent Grant
• 2857493

• References
• Source

• Patent Number

  2,857,493

• Date Filed

  Not available

• Date Issued

  Tuesday, October 21, 1958
  66 years ago

• CPC

  • A61C1/0023 - Foot control
  • A61C1/0007 - Control devices or systems
  • Y10T137/7032 - Furniture and housing furnishings
  • Y10T137/8376 - Combined
  • Y10T137/86992 - With subsequent closing of first opened port
  • Y10T137/87096 - Valves with separate, correlated, actuators
  • Y10T137/87161 - With common valve operator
  • Y10T137/87265 - Dividing into parallel flow paths with recombining
  • Y10T137/87772 - With electrical actuation

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 137 - Fluid handling
  • 251 - Valves and valve actuation