Patent ID: 7190890
Filing Date: 2007-03-13
Classification: A01M,B05B,F24H

Abstract:
1. A portable fluid heating tool capable of heating a flow of fluid to a desired temperature for killing vegetation, said portable fluid heating tool comprising a fluid inlet for connection to a source of fluid, a fluid heating assembly connected to the inlet, and an outlet for delivering heated fluid supplied by the fluid heating assembly, wherein there is a temperature controlled pressure regulating valve disposed between the inlet and the outlet, the temperature controlled pressure regulating valve having a flow restriction device capable of regulating the flow of heated fluid delivered to the outlet, and wherein the temperature controlled pressure regulating valve is disposed in heat exchange communication with the fluid heating assembly or with the heated fluid leaving the fluid heating assembly, such that heating or cooling of the temperature controlled pressure regulating valve will cause the flow restriction device to open or close to allow an increase or decrease in the flow of heated fluid leaving the outlet, to thereby control the temperature of the heated fluid leaving the outlet.