Vaporizer

Claim 1

VAPORIZING DEVICE COMPRISING A CONTAINER FOR RECEIVING VAPORIZABLE MATERIAL WHICH IS NORMALLY IN SOLID FORM BUT WHICH IS VAPORIZABLE UPON THE APPLICATION OF HEAT, THERMALLY RESPONSIVE CONTROL MEANS NORMALLY EMBEDDED IN AND CARRIED BY SAID MATERIAL IN HEAT EXCHANGE RELATION THEREWITH AND HAVING A CRITICAL OPERATING TEMPERATURE, MEANS FOR SUPPLYING HEAT TO SAID MATERIAL TO VAPORIZE IT AND TO SAID ELEMENT AT SUCH RATE AS TO BE NORMALLY EFFECTIVE TO RAISE IT TO SAID CRITICAL OPERATING TEMPERATURE, SAID MATERIAL HAVING A VAPORIZING TEMPERATURE BELOW SAID CRITICAL TEMPERATURE WHEREBY SAID MATERIAL IS EFFECTIVE BY VIRTUE OF SAID HEAT TRANSFER RELATION TO MAINTAIN THE TEMPERATURE OF SAID CONTROL MEANS BELOW SAID CRITICAL TEMPERATURE UNTIL THE VAPORIZATION OF SAID MATERIAL HAS PROGRESSED TO A PREDETERMINED DEGREE, SAID CONTROL MEANS BEING EFFECTIVE WHEN IT REACHES SAID CRITICAL TEMPERATURE FOR REDUCING THE HEAT SUPPLIED BY SAID HEAT SUPPLYING MEANS, AND MEANS FORMING A RELEASABLE HEAT ENERGY TRANSFER CONNECTION BETWEEN SAID CONTROL MEANS AND SAID SUPPLY MEANS WHEREBY SAID CONTROL MEANS MAY BE REMOVED PRIOR TO THE PLACING OF A FRESH CHARGE OF NEW MATERIAL INTO SAID CONTAINER.