Air atomizing spray nozzle with magnetically actuated shutoff valve
AssigneeSpraying Systems Co.
InventorMichael S. O'Brien
Life of this patent
Estimating the term…
Abstract
A spray device is provided that includes a body portion having a fluid passageway therein. A spray nozzle is affixed to the body portion. The spray nozzle includes a discharge orifice for directing fluid from the fluid passageway in the body portion in a predetermined spray pattern. A valve needle is supported in the body portion and spray nozzle for movement between an open position for permitting fluid discharge through the discharge orifice and a closed position for preventing fluid discharge through the discharge orifice. A control piston assembly is provided for controlling movement of the valve needle. The control piston assembly is movably supported in the body portion and is non-mechanically coupled to the valve needle by magnetic attraction.
Claims20
A spray device comprising:
- a body portion having a fluid passageway therein;
- a spray nozzle affixed to the body portion, the spray nozzle including a discharge orifice for directing fluid from the fluid passageway in the body portion in a predetermined spray pattern;
- a valve needle supported in the body portion and spray nozzle for movement between an open position for permitting fluid discharge through the discharge orifice and a closed position for preventing fluid discharge through the discharge orifice;
- and
- a control piston assembly for controlling movement of the valve needle, the control piston assembly being movably supported in the body portion and being non-mechanically coupled to the valve needle by magnetic attraction.
A spray device comprising:
- a body portion having a fluid passageway therein;
- a spray nozzle affixed to the body portion, the spray nozzle including a discharge orifice for directing fluid from the fluid passageway in the body portion in a predetermined spray pattern;
- a valve needle supported in the body portion and spray nozzle for movement between an open position for permitting fluid discharge through the discharge orifice and a closed position for preventing fluid discharge through the discharge orifice;
- a control piston assembly for controlling movement of the valve needle between the open and closed positions, the control piston assembly being movably supported in the body portion and being non-mechanically coupled to the valve needle by magnetic attraction, the control piston assembly being arranged in a control air chamber and being actuatable by compressed fluid to move the valve needle to the open position;
- and
- a valve return assembly for actuating the control piston assembly so as to move the valve needle to the closed position, the valve return assembly normally biasing the control piston assembly to move the valve needle towards the closed position.
Dependencies are inferred from the claim text.