Circuit for displaying the relative voltage at the output electrode of an electrostatically aided coating material atomizer
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B05B-007/02
B05B-005/053
B05B-005/03
B05B-012/00
H02M-007/04
출원번호
US-0045169
(2008-03-10)
등록번호
US-8770496
(2014-07-08)
발명자
/ 주소
Altenburger, Gene P.
출원인 / 주소
Finishing Brands Holdings Inc.
대리인 / 주소
Barnes & Thornburg LLP
인용정보
피인용 횟수 :
2인용 특허 :
170
초록▼
A coating dispensing device includes a trigger assembly for actuating the coating dispensing device to dispense coating material and a nozzle through which the coating material is dispensed. The coating dispensing device further includes a source of voltage and a voltage multiplier for multiplying t
A coating dispensing device includes a trigger assembly for actuating the coating dispensing device to dispense coating material and a nozzle through which the coating material is dispensed. The coating dispensing device further includes a source of voltage and a voltage multiplier for multiplying the voltage. The voltage multiplier is coupled to the source. An output terminal of the voltage multiplier is charged to a high-magnitude electrostatic potential and is adapted to charge coating material as the coating material is dispensed from the dispensing device. The coating dispensing device further includes a circuit for providing a visual indication of the voltage at the output terminal. The circuit for providing a visual indication of the voltage at the output terminal comprises a first impedance across which a portion of the voltage at the output terminal appears and an amplifier. The output terminal of the amplifier is coupled to a light source for providing the visual indication of the voltage at the output terminal of the voltage multiplier.
대표청구항▼
1. A coating dispensing device including a trigger assembly for actuating the coating dispensing device to dispense coating material, and a nozzle through which the coating material is dispensed, a source of voltage, a voltage multiplier for multiplying the voltage, the voltage multiplier coupled to
1. A coating dispensing device including a trigger assembly for actuating the coating dispensing device to dispense coating material, and a nozzle through which the coating material is dispensed, a source of voltage, a voltage multiplier for multiplying the voltage, the voltage multiplier coupled to the source, an output terminal of the voltage multiplier charged to a high-magnitude electrostatic potential and adapted to charge coating material as the coating material is dispensed from the dispensing device, and a circuit for providing a visual indication of the voltage at the output terminal, the circuit comprising a first impedance across which a portion of the voltage at the output terminal appears, a buffer amplifier having an input terminal coupled to the first impedance and an output terminal, the buffer amplifier isolating the first impedance from the output terminal of the buffer amplifier, the output terminal of the buffer amplifier coupled to a light source for providing the visual indication of the voltage at the output terminal of the voltage multiplier. 2. The coating dispensing device of claim 1 further comprising a differential amplifier having a non-inverting input terminal (+), an inverting input terminal (−) and an output terminal, one of the + and − input terminals of the differential amplifier coupled to the voltage source and the other of the + and − input terminals of the differential amplifier coupled to the output terminal of the buffer amplifier, and the output terminal of the differential amplifier coupled to the light source for providing the visual indication of the voltage at the output terminal of the voltage multiplier. 3. The coating dispensing device of claim 2 wherein the first impedance comprises a parallel combination of a resistor and a capacitor. 4. The coating dispensing device of claim 3 wherein the first impedance further comprises a transient suppressor in parallel with the resistor and the capacitor. 5. The coating dispensing device of claim 1 wherein the voltage multiplier includes an oscillator, a transformer coupled to the oscillator, and a voltage multiplier cascade coupled to the transformer. 6. The coating dispensing device of claim 5 wherein the voltage multiplier cascade is coupled to the output terminal of the voltage multiplier through a second impedance whose real component is on the order of about 2×103 to about 4×103 times a real component of the first impedance. 7. The coating dispensing device of claim 5 wherein the first impedance comprises a parallel combination of a resistor and a capacitor. 8. The coating dispensing device of claim 7 wherein the first impedance further comprises a transient suppressor in parallel with the resistor and the capacitor. 9. A coating dispensing device including a trigger assembly for actuating the coating dispensing device to dispense coating material, and a nozzle through which the coating material is dispensed, a source of voltage, a voltage multiplier for multiplying the voltage, the voltage multiplier coupled to the source, an output terminal of the voltage multiplier charged to a high-magnitude electrostatic potential and adapted to charge coating material as the coating material is dispensed from the dispensing device, and a circuit for providing a visual indication of the voltage at the output terminal of the voltage multiplier, the circuit comprising a first impedance across which a portion of the voltage at the output terminal of the voltage multiplier appears, a differential amplifier having a non-inverting input terminal (+), an inverting input terminal (−) and an output terminal, one of the + and − input terminals of the differential amplifier coupled to the voltage source and the other of the + and − input terminals of the differential amplifier coupled to the first impedance, and the output terminal of the differential amplifier coupled to a light source for providing a visual indication of the voltage at the output terminal of the voltage multiplier, and a buffer amplifier having an input terminal coupled to the first impedance and an output terminal coupled to said other of the + and − input terminals of the differential amplifier, the buffer amplifier isolating the first impedance from said other of the + and − input terminals of the differential amplifier. 10. The coating dispensing device of claim 9 wherein the first impedance comprises a parallel combination of a resistor and a capacitor. 11. The coating dispensing device of claim 10 wherein the first impedance further comprises a transient suppressor in parallel with the resistor and the capacitor. 12. A coating dispensing device including a trigger assembly for actuating the coating dispensing device to dispense coating material, and a nozzle through which the coating material is dispensed, a source of voltage, a voltage multiplier for multiplying the voltage, the voltage multiplier coupled to the source, an output terminal of the voltage multiplier charged to a high-magnitude electrostatic potential and adapted to charge coating material as the coating material is dispensed from the dispensing device, and a circuit for providing a visual indication of the voltage at the output terminal of the voltage multiplier, the circuit comprising a first impedance across which a portion of the voltage at the output terminal of the voltage multiplier appears, a differential amplifier having a non-inverting input terminal (+), an inverting input terminal (−) and an output terminal, one of the + and − input terminals of the differential amplifier coupled to the voltage source and the other of the + and − input terminals of the differential amplifier coupled to the first impedance, and the output terminal of the differential amplifier coupled to a light source for providing a visual indication of the voltage at the output terminal of the voltage multiplier, the voltage multiplier including an oscillator, a transformer coupled to the oscillator, and a voltage multiplier cascade coupled to the transformer, the voltage multiplier cascade coupled to the output terminal of the voltage multiplier through a second impedance whose real component is on the order of about 2×103 to about 4×103 times a real component of the first impedance. 13. A coating dispensing device including a trigger assembly for actuating the coating dispensing device to dispense coating material, and a nozzle through which the coating material is dispensed, a source of voltage, a voltage multiplier for multiplying the voltage, the voltage multiplier coupled to the source, an output terminal of the voltage multiplier charged to a high-magnitude electrostatic potential and adapted to charge coating material as the coating material is dispensed from the dispensing device, and a circuit for providing a visual indication of the voltage at the output terminal of the voltage multiplier, the circuit comprising a first impedance across which a portion of the voltage at the output terminal of the voltage multiplier appears, a differential amplifier having a non-inverting input terminal (+), an inverting input terminal (−) and an output terminal, one of the + and − input terminals of the differential amplifier coupled to the voltage source and the other of the + and − input terminals of the differential amplifier coupled to the first impedance, and the output terminal of the differential amplifier coupled to a light source for providing a visual indication of the voltage at the output terminal of the voltage multiplier, the voltage multiplier including an oscillator, a transformer coupled to the oscillator, and a voltage multiplier cascade coupled to the transformer, the first impedance comprising a parallel combination of a resistor and a capacitor. 14. The coating dispensing device of claim 13 wherein the first impedance further comprises a transient suppressor in parallel with the resistor and the capacitor.
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