One-Handed Telescoping Pole Mechanism for Paint Rollers
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Solution Overview
Problem
Existing adjustable length poles in the paint industry are difficult to use, often requiring two hands, are prone to shifting out of setting, offer only discrete length adjustments, and have a short lifespan, increasing costs.
Innovation Solution
An extendable pole mechanism with a housing, contact devices, levers, and a trigger that allows for one-handed adjustment of pole length, featuring biasing devices to maintain the pole position and enable infinite length adjustment by moving the trigger to switch between use and adjustment conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If known adjustable length poles are designed to be adjustable, then the pole length can be changed to suit different painting heights, but the poles require two hands to adjust and are difficult to use
Solution Approach 1:
The pole mechanism uses spring biasing devices that automatically engage and disengage contact devices to lock and unlock the telescoping pole sections. When the user simply pushes or pulls the pole, the spring-loaded contact devices automatically release or engage to allow or prevent movement, eliminating the need for manual operation of separate locking mechanisms with both hands.
Solution Approach 2:
The contact devices are designed to dynamically transition between engaged and disengaged states based on applied force. The springs provide continuous biasing force that maintains the pole in its current extended or retracted position, while allowing easy transition between positions when force is applied, enabling one-handed operation.
2Adaptability or versatility
If known adjustable length poles are designed to be adjustable, then the pole length can be changed, but the poles easily come loose from their setting and change length when change is not desirable
Solution Approach 1:
The spring biasing devices continuously apply a preliminary counteracting force to prevent the pole sections from moving unintentionally. The contact devices are biased into engagement with the pole surface, creating constant friction and mechanical contact that resists unwanted movement while still allowing intentional adjustment when force is applied.
3Device complexity
If known adjustable length poles are designed with discrete adjustment increments, then the structure is simpler, but the poles only offer discrete length adjustments rather than infinite adjustment
Solution Approach 1:
The telescoping pole sections can slide freely within each other when the contact devices are disengaged, allowing continuous adjustment to any length position rather than being restricted to discrete increments. The spring-loaded contact devices can engage at any position along the pole, enabling infinite adjustability while maintaining simple mechanical construction.
4Adaptability or versatility
If known adjustable length poles are designed for frequent adjustment, then the adaptability is improved, but the poles quickly wear out and increase costs
Solution Approach 1:
The spring biasing devices automatically return the contact devices to their engaged position after each adjustment, eliminating the need for manual resetting. This self-resetting mechanism reduces wear on the adjustment components by ensuring consistent engagement and proper alignment, thereby extending the pole's operational life despite frequent adjustments.
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 mechanism allows for easy, one-handed adjustment of pole length, maintains the desired position, and extends the pole's lifespan, reducing operational costs and user effort.
Implementation Method 1
A first biasing device may exert a first biasing force that biases the first contact device toward contact with the first associated pole. A second biasing device may exert a second biasing force that biases the second contact device toward contact with the first associated pole.
Data Source
AI summary
An extendable pole mechanism may be used with a pair of poles that are longitudinally movable to adjust the overall length of both poles. The mechanism may include a housing that receives the poles and a trigger that is moveable with respect to the housing to adjust the mechanism between a use condition, where the poles are held in a longitudinally relative fixed position, and an adjustment condition, where the poles are longitudinally moveable with respect to each other.