3668882

Information

• Patent Grant
• 3668882

• References
• Source

• Patent Number

  3,668,882

• Date Filed

  Not available

• Date Issued

  Tuesday, June 13, 1972
  52 years ago

• CPC

  • G05D23/1919 - characterised by the type of controller
  • F25B9/006 - the refrigerant containing more than one component
  • F25B45/00 - Arrangements for charging or discharging refrigerant
  • F25J1/0022 - Hydrocarbons
  • F25J1/0055 - originating from an incorporated cascade
  • F25J1/0212 - as a single flow MCR cycle
  • F25J1/0249 - Controlling refrigerant inventory
  • F25J1/0252 - Control strategy
  • F25B2400/08 - Refrigeration machines, plants and systems having means for detecting the concentration of a refrigerant
  • F25B2600/05 - Refrigerant levels
  • Y10T137/2509 - By optical or chemical property

• US Classifications

  • 062 - Refrigeration
  • 137 - Fluid handling