Electrostatic spray gun apparatus

A hand manipulable spray gun has an air turbine (37) which is driven at high speed in the order of 60,000 rpm and drives directly an alternator (38) to generate an alternating voltage in the order of 50 volts at about 1000 Hz. The output of this alternator is supplied to a step-up transformer (39) t...

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Hauptverfasser:	REEVES, CLARENCE C, OWENS, DONALD REESE, LEVEY, GUSTAVE STANLEY
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS NOZZLES PERFORMING OPERATIONS SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL TRANSPORTING
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creator	REEVES, CLARENCE C OWENS, DONALD REESE LEVEY, GUSTAVE STANLEY
description	A hand manipulable spray gun has an air turbine (37) which is driven at high speed in the order of 60,000 rpm and drives directly an alternator (38) to generate an alternating voltage in the order of 50 volts at about 1000 Hz. The output of this alternator is supplied to a step-up transformer (39) to achieve a secondary voltage in the order of 2500 volts. From here, it is supplied to a long chain series voltage multiplier (40) to increase the voltage thereof to one in the order of 55-80 kilovolts. The combination of a relatively small transformer and small capacitance of capacitors (71 to 77) in the voltage multiplier (40) establishes a direct voltage output from the voltage multiplier which has an alternating voltage ripple in excess of fifteen percent. The gun has a "wrap" efficiency comparable to 75 to 125 kV systems without the danger of using high direct voltages.
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The output of this alternator is supplied to a step-up transformer (39) to achieve a secondary voltage in the order of 2500 volts. From here, it is supplied to a long chain series voltage multiplier (40) to increase the voltage thereof to one in the order of 55-80 kilovolts. The combination of a relatively small transformer and small capacitance of capacitors (71 to 77) in the voltage multiplier (40) establishes a direct voltage output from the voltage multiplier which has an alternating voltage ripple in excess of fifteen percent. 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The output of this alternator is supplied to a step-up transformer (39) to achieve a secondary voltage in the order of 2500 volts. From here, it is supplied to a long chain series voltage multiplier (40) to increase the voltage thereof to one in the order of 55-80 kilovolts. The combination of a relatively small transformer and small capacitance of capacitors (71 to 77) in the voltage multiplier (40) establishes a direct voltage output from the voltage multiplier which has an alternating voltage ripple in excess of fifteen percent. 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The output of this alternator is supplied to a step-up transformer (39) to achieve a secondary voltage in the order of 2500 volts. From here, it is supplied to a long chain series voltage multiplier (40) to increase the voltage thereof to one in the order of 55-80 kilovolts. The combination of a relatively small transformer and small capacitance of capacitors (71 to 77) in the voltage multiplier (40) establishes a direct voltage output from the voltage multiplier which has an alternating voltage ripple in excess of fifteen percent. The gun has a "wrap" efficiency comparable to 75 to 125 kV systems without the danger of using high direct voltages.</abstract><oa>free_for_read</oa></addata></record>
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language	eng ; fre ; ger
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subjects	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS NOZZLES PERFORMING OPERATIONS SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL TRANSPORTING
title	Electrostatic spray gun apparatus
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