# US 8,770,496 B2 · Circuit for displaying the relative voltage at the output electrode of an electrostatically aided coating material atomizer

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 8,770,496 B2
- Document ID: US8770496B2
- Status: Granted
- Kind: B2
- Application number: 12/045,169
- Filed: 2008-03-10
- Published: 2009-09-10
- Granted: 2014-07-08
- Earliest claimed: 2008-03-10
- Assignees: Finishing Brands Holdings Inc.
- Applicants: Gene P. Altenburger
- Inventors: Gene P. Altenburger
- Web page: https://patentgrep.com/patent/US8770496B2

## CPC

- B05B 5/03: characterised by the use of gas {, e.g. electrostatically assisted pneumatic spraying (B05B5/04, B05B5/043, B05B5/047 take precedence)}
- B05B 5/053: Arrangements for supplying power, e.g. charging power
- B05B 5/0532: {driven by a gas turbine}
- B05B 12/004: {comprising sensors for monitoring the delivery, e.g. by displaying the sensed value or generating an alarm (B05B12/08 takes precedence; registering or indicating the condition or the working of machines or other apparatus in general G07C3/00)}
- B05B 5/0533: {Electrodes specially adapted therefor; Arrangements of electrodes}
- H02M 7/04: by static converters
- B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D)
- H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P)

## Abstract

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.

## Claims

### Claim 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.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 2)

The coating dispensing device of claim 2 wherein the first impedance comprises a parallel combination of a resistor and a capacitor.

### Claim 4 (depends on 3)

The coating dispensing device of claim 3 wherein the first impedance further comprises a transient suppressor in parallel with the resistor and the capacitor.

### Claim 5 (depends on 1)

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.

### Claim 6 (depends on 5)

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.

### Claim 7 (depends on 5)

The coating dispensing device of claim 5 wherein the first impedance comprises a parallel combination of a resistor and a capacitor.

### Claim 8 (depends on 7)

The coating dispensing device of claim 7 wherein the first impedance further comprises a transient suppressor in parallel with the resistor and the capacitor.

### Claim 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.

### Claim 10 (depends on 9)

The coating dispensing device of claim 9 wherein the first impedance comprises a parallel combination of a resistor and a capacitor.

### Claim 11 (depends on 10)

The coating dispensing device of claim 10 wherein the first impedance further comprises a transient suppressor in parallel with the resistor and the capacitor.

### Claim 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.

### Claim 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.

### Claim 14 (depends on 13)

The coating dispensing device of claim 13 wherein the first impedance further comprises a transient suppressor in parallel with the resistor and the capacitor.