Spray Gun Light Assembly with Inductive Power Supply

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Solution Overview

Problem

Conventional spray guns require external power sources for lighting, adding complexity and cost to coating operations, especially in low-light conditions where the application of electrostatically charged coating materials may not be visibly apparent.

Innovation Solution

Integration of a light assembly within the spray gun that utilizes a voltage multiplier to generate a magnetic field, allowing inductive power supply to an LED for illumination without external power connections, enabling self-sufficient lighting for inspecting coated surfaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a light assembly is integrated into the spray gun, then illumination is provided for inspecting coated surfaces, but the device complexity increases

Engineering Contradiction:
ImproveilluminationVSAvoiddevice complexity
Core Design Contradiction:
Illumination intensityVSDevice complexity

Solution Approach 1:

The light assembly is integrated into the spray gun body, combining the lighting function with the coating application device. This allows the user to have both functions in a single tool, eliminating the need to switch between separate light and spray gun tools during coating operations.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The light assembly is powered by a battery pack that is self-contained within the assembly, and the light is activated automatically or manually without requiring external power sources. This self-service capability allows the light to operate independently once attached to the spray gun.

Inventive Principle:
Principle #25Self-service

2Illumination intensity

If conventional lights are used for inspection, then illumination is provided, but additional tools and external power sources are required

Engineering Contradiction:
ImproveilluminationVSAvoidease of operation
Core Design Contradiction:
Illumination intensityVSEase of operation

Solution Approach 1:

The light assembly is designed to attach to the spray gun, merging the lighting function with the coating application tool. This integration eliminates the need to use separate conventional lights and external power sources, simplifying the overall operation.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The spray gun system becomes multi-functional by incorporating the light assembly, allowing it to perform both coating application and illumination functions. This universality reduces the number of separate tools needed in the coating operation.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Illumination intensity

If the light assembly is activated continuously, then consistent illumination is provided, but energy consumption increases

Engineering Contradiction:
Improveconsistent lightingVSAvoidenergy consumption
Core Design Contradiction:
Illumination intensityVSUse of energy by moving object

Solution Approach 1:

The light assembly includes an activator that allows the user to turn the light on and off as needed. This dynamic control enables the light to be activated only when illumination is required, reducing unnecessary energy consumption while maintaining consistent lighting when in use.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The light can be activated periodically or intermittently based on the user's needs during the coating process, rather than running continuously. This periodic activation reduces overall energy consumption while still providing consistent illumination when the light is on.

Inventive Principle:
Principle #19Periodic action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This solution simplifies coating operations by eliminating the need for additional power sources, reduces costs, and provides consistent lighting for ensuring adequate coating application without the hassle of switching tools, while being adaptable to various coating materials and work pieces.

Implementation Method 1

The circuitry is configured to supply electrical energy inductively obtained by the circuitry to the light when the voltage multiplier is in the activated state

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

The light assembly includes a light and circuitry electrically connected to the light

Methodology Applied
Scientific EffectLight emitting diode effect: Light Emitting Diode

Data Source

PatentUS11300283B2Retrofit light assembly and powder spray gun with integrated or retrofit light
Publication Date: 2022.04.12 NORDSON CORP
  • US11300283B2 patent drawing
  • US11300283B2 patent drawing
  • US11300283B2 patent drawing

AI summary

A light assembly coupled to a spray gun for spraying electrostatically charged coating material is disclosed. The spray gun includes a gun body comprising a barrel, a nozzle assembly extending from the barrel in a longitudinal direction, a voltage multiplier, and an actuator assembly configured to transition the voltage multiplier between an activated state and a deactivated state. The light assembly includes a light and circuitry electrically connected to the light. The circuitry is configured to supply electrical energy inductively obtained by the circuitry to the light when the voltage multiplier is in the activated state. The light assembly can also include a housing, a lens cover releasably attached to the housing, and a control member for changing a characteristic of the light.