2018136

Information

• Patent Grant
• 2018136

• References
• Source

• Patent Number

  2,018,136

• Date Filed

  Not available

• Date Issued

  Tuesday, October 22, 1935
  89 years ago

• CPC

  • A47J31/043 - Vacuum-type coffee-making apparatus with rising pipes in which hot water is passed to the upper bowl in which the ground coffee is placed and subsequently the heat source is cut-off and the water is sucked through the filter by the vacuum in the lower bowl
  • H01H33/56 - Gas reservoirs
  • H01H33/86 - the flow of arc-extinguishing fluid under pressure from the contact space being controlled by a valve
  • H01H33/95 - the arc-extinguishing fluid being air or gas
  • H01H33/98 - the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow

• US Classifications

  • 218 - High-voltage switches with arc preventing or extinguishing devices