Thermostatically controlled fluidized solid particle bath apparatus

Claim 1

IN COMBINATION, A FLUIDIZED SOLID PARTICLE BATH AND MEANS FOR CONTROLLING THE TEMPERATURE OF SAID BATH, SAID SOLID PARTICLE BATH BEING CLOSE AT THE BOTTOM AND HAVING A POROUS PLATE SPACED FROM THE BOTTOM ADAPTED TO PREVENT MOVEMENT OF THE SOLID PARTICLES THERETHROUGH, PIPE MEANS EXTENDING INTO THE REGION BETWEEN THE BOTTOM AND SAID POROUS PLATE FOR SUPPLYING GAS PRESSURE THERETO, AT LEAST ONE ELECTRICAL HEATING MEANS IN SAID BATH ABOVE THE POROUS PLATE, SAID MEANS FOR CONTROLLING THE TEMPERATURE OF SAID BATH COMPRISING A THERMOSTAT OF THE TYPE ADAPTED TO OPERATE BY LINEAR EXPANSION AND MOVEMENT OF ONE PART THEREOF WITH RESPECT TO ANOTHER PART HAVING A PORTION THEREOF EXTENDING INTO SAID SOLID PARTICLE BATH TO SENSE THE TEMPERATURE OF SAID BATH, A JET MEANS INCLUDING A JET ORIFICE, A GAS PRESSURE LINE HAVING ONE END THEREOF CONNECTED TO SAID JET MEANS, THE OTHER END OF SAID GAS PRESSURE LINE BEING CONNECTED TO SAID PIPE MEANS SUPPLYING GAS PRESSURE TO SAID BATH, CONSTRICTION MEANS IN SAID GAS PRESSURE LINE BETWEEN THE JET MEANS AND THE PIPE MEANS, MEANS OPERATIVELY ASSOCIATED WITH SAID JET ORIFICE AND CONTROLLED BY THE MOVEMENT OF SAID ONE PART OF SAID THERMOSTAT FOR REGULATING THE ESCAPE OF GAS FROM THE JET ORIFICE WHEREBY TO VARY THE PRESSURE BUILD-UP IN SAID GAS PRESSURE LINE BETWEEN SAID CONSTRICTION