3478534

Information

• Patent Grant
• 3478534

• References
• Source

• Patent Number

  3,478,534

• Date Filed

  Not available

• Date Issued

  Tuesday, November 18, 1969
  55 years ago

• CPC

  • F25B41/062 - Expansion valves
  • G05D23/1906 - using an analogue comparing device
  • G05D23/1919 - characterised by the type of controller
  • G05D23/1921 - using a thermal motor
  • G05D23/20 - with sensing elements having variation of electric or magnetic properties with change of temperature
  • G05D23/24 - the sensing element having a resistance varying with temperature
  • G05D23/275 - with sensing element expanding, contracting, or fusing in response to changes of temperature
  • F25B2341/0651 - actuated by electric heating means
  • F25B2600/21 - Refrigerant outlet evaporator temperature
  • F25B2600/2513 - Expansion valves
  • F25B2700/21174 - of the refrigerant at the inlet of the evaporator
  • F25B2700/21175 - of the refrigerant at the outlet of the evaporator
  • Y02B30/72 - Electric or electronic refrigerant flow control

• US Classifications

  • 062 - Refrigeration
  • 236 - Automatic temperature and humidity regulation