Coffee maker-server

Claim 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.