Airless Sprayer Backpack With Segregated Battery Compartments

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Solution Overview

Problem

Existing methods for applying liquids to surfaces, such as window tinting, paint protection film, and vinyl graphics, rely on pressurized air tanks, which are cumbersome and pose safety concerns.

Innovation Solution

A mobile backpack system with an airless electronic spray device featuring a 12V 90 psi reinforced diaphragm pump, insulated bladder, crimped hose clamps, and segregated wiring compartments, along with ergonomic design and safety features like LED charge indicators and secure spray triggers, to enhance application ease and safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If pressurized air tanks are used for applying liquids, then liquid application is achieved, but device complexity and safety risks increase

Engineering Contradiction:

Improveliquid applicationVSAvoiddevice complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical pressurized air tank system with an electronic pump system. The pump is powered by a battery and controlled electronically, eliminating the need for compressed air storage tanks and associated mechanical pressure regulation components. This substitution reduces device complexity while maintaining liquid application capability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts and removes the pressurized air tank component from the system entirely. By eliminating this component, the system achieves simpler architecture and reduced safety risks associated with high-pressure air storage, while the liquid application function is maintained through the pump-based delivery system.

Inventive Principle:

Principle #2Taking out (Extraction)

2Ease of operation

If pressurized air tanks are used for applying liquids, then liquid application is achieved, but safety risks increase

Engineering Contradiction:

Improveliquid applicationVSAvoidsafety risks

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent eliminates the harmful aspect of pressurized air storage by replacing it with a low-pressure pump system. The battery-powered pump delivers liquid at controlled pressures without the safety risks of high-pressure air tanks, converting a potentially harmful system into a safe one while maintaining functionality.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Reliability

If component protection features are added, then reliability improves, but device complexity increases

Engineering Contradiction:

Improvecomponent protectionVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges multiple protective functions into integrated components. For example, the pump assembly includes integrated seals and mounting features that protect against leakage and damage. The battery compartment combines sealing, cushioning, and access control in a single integrated structure. This merging approach maintains reliability while minimizing the increase in overall device complexity.

Inventive Principle:

Principle #5Merging (Combining)

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

The system provides a safer, more efficient, and ergonomic solution for applying liquids, minimizing fluid leakage risks and enhancing user comfort through improved component protection and intelligent battery management.

Implementation Method 1

a 12V 90 psi reinforced diaphragm pump

Methodology Applied

Scientific EffectPump: Pump

Implementation Method 2

a thermofoil lining through an interior portion of said back compartment

Methodology Applied

Scientific EffectThermal Insulation: Thermal Insulation

Implementation Method 3

a hook and loop strap proximate a top rear of said interior portion of said back compartment

Methodology Applied

Scientific EffectHook and loop strap: Velcro

Data Source

PatentUS12447487B1Mobile sprayer backpack

Publication Date: 2025.10.21 SLAVICH BRUCE

AI summary

A mobile spray device that is wearable on the back of a user that incorporates a fill hose of ¼″ diameter and a spray hose of ⅛″ diameter, the hoses being connected to a pump housed in a top front compartment of said device which is connected to a battery and controller housed in a bottom front compartment of said device, both top and bottom compartments having hard outer shells, and wherein these compartments have apertures that allow for connection of wires from the battery and controller and hoses to pass through an intermediate safety compartment which then pass through into a thermofoil lined bladder compartment which houses a bladder capable of holding 4 liters or more of fluid and having a large dial with a hook that latches onto a loop in the bladder compartment so it remains upright at all times. Drainage ports on the bottom of the device allow for safety removal of fluid in the case of a leak. The spray hose exits the bladder compartment, is securable over the shoulder to a strap wherein the spray nozzle, made of metal, is securable via a magnet into a holster on one of straps.