Patent ID: 6669057
Filing Date: 2003-12-30
Classification: B05B,B05C,Y10T

Abstract:
A dispensing apparatus for dispensing a liquid comprising:a liquid distribution manifold capable of heating the liquid; a dispenser body capable of receiving a flow of the liquid from said liquid distribution manifold, said dispenser body including a flow-control mechanism having a first condition in which the flow of the liquid is discharged from said dispenser body and a second condition in which the flow of the liquid is blocked; a pneumatic actuator including a solenoid valve with a first duct and a second duct, an air piston housing, a first passageway extending through said air piston housing to said first duct, an air cavity disposed within said air piston housing, a second passageway extending through said air piston housing coupling said air cavity in fluid communication with said second duct, and an air piston positioned for movement within said air cavity, said air piston operatively coupled with said flow-control mechanism for providing said first and second conditions, said first passageway supplying pressurized fluid to said first duct, said solenoid valve capable of selectively allowing pressurized fluid to flow from said first duct through said second duct to said air cavity for reciprocating said air piston within said air cavity to provide said first and second conditions of said flow-control mechanism, and said solenoid valve mounted in abutting, thermally-conductive contact with said air piston housing so that said first duct is continuous with said first passageway and said second duct is continuous with said second passageway; and a thermally insulating shield positioned between said air piston housing and said liquid distribution manifold, said shield capable of reducing the transfer of heat from said liquid distribution manifold to said air piston housing.