Hand-held Vibrating Cement Trowel with Counter-balanced Motor
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Solution Overview
Problem
Existing hand tools used for finishing concrete surfaces, such as trowels, require excessive manual effort to settle the mixture and remove air pockets due to insufficient vibratory force, especially in hard-to-reach areas, leading to inefficiencies in construction processes.
Innovation Solution
A battery-powered trowel with a counter-balanced vibrator motor positioned directly below the handle on the smoothing plane, providing variable vibration settings to facilitate quicker settlement of concrete and reduce manual strokes needed for finishing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional hand trowels are used for finishing concrete surfaces, then the tool is simple and easy to operate, but the vibratory force is insufficient requiring dozens of manual strokes to settle the mixture and remove air pockets
Solution Approach 1:
The patent combines a conventional hand trowel with a battery-powered vibration motor integrated into the handle, merging two separate functions (manual smoothing and mechanical vibration) into a single unified tool that delivers both actions simultaneously
Solution Approach 2:
The patent incorporates a vibration motor that generates mechanical oscillations transmitted through the handle to the concrete surface, using vibratory forces to rapidly settle the mixture and remove air pockets without requiring multiple manual beating strokes
2Force
If small vibration devices are installed in hand trowel handles, then the tool remains portable and easy to use, but the vibratory force delivered to the surface is insufficient for effective settling
Solution Approach 1:
The patent changes the key parameter of vibration amplitude and power by using a battery-powered motor that generates significantly stronger oscillations than small piezoelectric devices, while maintaining the handheld form factor through proper weight distribution and ergonomic handle design
3Manufacturing precision
If multiple manual strokes are applied with conventional trowels to settle edge and border areas, then the concrete surface can be finished, but the time required increases significantly reducing user efficiency
Solution Approach 1:
The patent enables continuous vibratory action during the entire smoothing process, allowing the concrete to be settled and finished in a single continuous motion rather than requiring intermittent manual beating strokes, thereby maintaining surface quality while dramatically reducing the time and effort required
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 trowel enables faster and more efficient concrete finishing by delivering sufficient vibratory force to the surface, reducing labor and time required to achieve a smooth, dense, and structurally sound finish, even in difficult-to-reach areas.
Implementation Method 1
a battery powered vibrator counter-balanced motor positioned directly below the handle on the smoothing plane to help settle the concrete
Data Source
AI summary
The present invention involves a hand-held tool with a battery powered vibrator positioned on the smoothing plane of the float to help settle the concrete while the operator smooths the surface.