Handheld Paint Pump with Retractable Plunger for Maneuverability
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Solution Overview
Problem
Conventional painting devices face challenges in efficiently applying paint to surfaces, particularly in small areas due to the design of the paint reservoir and plunger assembly, which can make them cumbersome and difficult to maneuver.
Innovation Solution
A handheld painting device with a paint pump that creates a vacuum to draw paint from a reservoir, featuring a tuck-in plunger rod mechanism to reduce length during use and a powered or manual pump assembly for efficient paint application, allowing one-handed operation and enhanced control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a conventional paint reservoir and plunger assembly design is used, then the device can hold sufficient paint, but the device becomes cumbersome and difficult to maneuver in small areas
Solution Approach 1:
The plunger rod is designed to be retractable into the handle housing, allowing the assembly to compact to a smaller size when not in use. This nesting mechanism enables the device to maintain sufficient paint capacity while reducing its extended length to improve maneuverability in confined spaces.
2Device complexity
If a manual plunger assembly is used, then the device structure can be simple, but the user effort required for paint application increases
Solution Approach 1:
The manual plunger assembly is replaced with a powered pump mechanism that uses an electric motor to drive paint flow. This substitution eliminates the need for manual pumping effort while maintaining relatively simple overall device structure through the use of compact motor-pump integration.
3Force
If a powered pump assembly is used, then user effort is reduced, but the device complexity increases
Solution Approach 1:
The pump mechanism is integrated directly into the handle assembly, merging the pumping function with the existing structural components. This consolidation reduces overall device complexity by eliminating separate pump housing and mounting structures, while still providing powered paint delivery to reduce user effort.
4Productivity
If the plunger rod is extended for paint delivery, then paint flow is enabled, but the device length increases reducing maneuverability
Solution Approach 1:
The plunger rod is designed with dynamic extendability, allowing it to lengthen only when paint delivery is required and retract when not in use. This dynamic configuration enables the device to maintain compact dimensions for maneuverability while providing extended reach for effective paint application when needed.
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 device enables efficient and controlled paint application in small areas with reduced user effort, improving maneuverability and paint flow consistency.
Implementation Method 1
A paint pump is positioned between the paint reservoir and the paint applicator. The paint pump is operable to create a vacuum that draws paint from the reservoir through the pump assembly and to the applicator.
Data Source
Figure 1
Figure 2-1~2-2
Figure 2-3
AI summary
The invention relates to a handheld painting device comprising: an elongate handle having an internal paint reservoir therein; a paint applicator for applying paint to a surface; and a rotary drive mechanism configured to deliver paint from the internal paint reservoir to the paint applicator, the rotary drive mechanism including: a rotatable shaft extending within at least a portion of the paint reservoir and having a connector formed at one end; a plunger mounted on the shaft and movable within the paint reservoir by rotation of the shaft; and a powered actuator mechanism, interchangeable with other painting devices, and comprising a connector that is configured to engage the connector on the end of the rotatable shaft to thereby rotate the rotatable shaft.