Coffee maker-server

• US 3,290,484 A
• Filed: 03/22/1963
• Issued: 12/06/1966
• Est. Priority Date: 03/22/1963
• Status: Expired due to Term

• Current Assignee: William M. Day
• Original Assignee: William M. Day
• Inventors: Day, William M.
• Application Number:
  US04/267,100
• Time in Patent Office: 1,355 Days
• US Class Current: 219/441
• CPC Class Codes: A47J 31/005 Portable or compact beverage making apparatus, e.g. for travelling, for use in automotive vehicles
• CPC Class Codes: A47J 31/053 with repeated circulation of the extract through the filter
• CPC Class Codes: H02J 5/00 Circuit arrangements for transfer of electric power between ac networks and dc networks H02J3/36 takes precedence
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: Y10S 30/01 Rechargeable battery operated

Claims

1. A COMBINATION COFFEE MAKER-SERVER COMPRISING A COMPARTMENT FOR CONTAINING A LIQUID FOR MAKING A COFFEE BREW, A THERMAL PUMP FOR CIRCULATING THE LIQUID IN SAID COMPARTMENT, A MAIN ELECTRIC HEATER IN HEAT EXCHANGE RELATION WITH SAID PUMP TO ACTUATE SAID PUMP, CAUSE PERCOLATION OF THE LIQUID AND HEAT THE LIQUID TO A DESIRED TEMPERATURE, AN AUXILIARY ELECTRIC HEATER FOR MAINTAINING THE LIQUID IN SAID COMPARTMENT WARM, A SELF-CONTAINED AUXILIARY POWER SUPPLY CARRIED BY SAID COFFEE MAKERSERVER, A FIRST ELECTRIC CIRCUIT MEANS FOR CONNECTING SAID MAIN ELECTRIC HEATER TO AN EXTERNAL POWER SOURCE INCLUDING A TEMPERATURE SENSITIVE SWITCH TO TERMINATE PERCOLATION WHEN THE LIQUID REACHES THE DESIRED TEMPERATURE, A SECOND ELECTRIC CIRCUIT MEANS FOR CONNECTING SAID AUXILIARY ELECTRIC HEATER TO SAID AUXILIARY POWER SUPPLY, SAID SECOND CIRCUIT MEANS BEING INDEPENDENT FROM SAID FIRST CIRCUIT MEANS, AND A COMMON CONTROL SWITCH HAVING AT LEAST TWO OPERATIVE POSITIONS INCLUDING A FIRST POSITION FOR CONNECTING SAID MAIN HEATER TO AN EXTERNAL POWER SUPPLY SOURCE AND DISCONNECTING SAID AUXILIARY HEATER FROM SAID AUXILIARY POWER SUPPLY AND A SECOND POSITION FOR DISCONNECTING SAID MAIN HEATER FROM THE EXTERNAL POWER SOURCE AND CONNECTING SAID AUXILIARY HEATER TO SAID AUXILIARY POWER SUPPLY.