Momentum-Based Force Amplifier for High-Load Mechanical Lifting
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Solution Overview
Problem
Existing force-amplifying devices do not utilize acceleration and momentum to enhance output force beyond what is achievable with input force, leading to inefficiencies in tasks requiring sustained or repetitive force application.
Innovation Solution
A device comprising a prime mover and a secondary mover, where the prime mover rotates about a first axis through a power stroke of less than ninety degrees, causing the secondary mover's input to revolve and its body to pivot, generating a greater output force without additional input force, leveraging momentum for increased amplification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If traditional force-amplifying devices (block and pulley, lever and fulcrum) are used, then force amplification is achieved, but the output force cannot exceed the input force without additional force input
Solution Approach 1:
The patent applies the dynamics principle by introducing a moving mass that accelerates during the power stroke. The moving mass transitions from a static component to a dynamic one, utilizing acceleration to generate additional output force through momentum. This allows the system to produce output force greater than the input force without requiring additional force input, as the accelerated mass contributes kinetic energy to the output.
Solution Approach 2:
The patent changes the parameter of mass from static to dynamic by accelerating a moving mass during operation. By varying the velocity of the moving mass throughout the power stroke (accelerating it), the system transforms a constant mass parameter into a dynamic one that contributes to force amplification through its acceleration and momentum, enabling output force to exceed input force.
2Device complexity
If force is generated by human body alone, then simplicity is maintained, but the body tires quickly and cannot sustain force through required duration or repetitions
Solution Approach 1:
The moving mass acts as a dynamic energy storage element that accumulates kinetic energy during the power stroke and releases it during the return stroke. This dynamic component allows the system to sustain force output over multiple cycles without requiring continuous high-level human effort, thereby extending the duration of sustained force application while maintaining relatively simple device structure.
3Force
If acceleration is added to force-amplifying devices, then momentum can help generate output force and increase the difference between output and input force, but device complexity increases
Solution Approach 1:
The patent merges the force amplification function with the momentum generation function by integrating the moving mass directly into the existing force-amplifying mechanism. Rather than adding a separate acceleration mechanism, the design combines these functions into a unified system where the moving mass is part of the force transmission path, achieving both force amplification and momentum utilization without proportionally increasing device complexity.
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
Enables the amplification of input force to lift masses three times heavier, facilitating tasks like lifting, compressing, and pumping with increased efficiency by utilizing momentum generated during the prime mover's power stroke.
Implementation Method 1
With acceleration, one can use momentum to help generate the output force, and further increase the difference between the output force and the input force
Implementation Method 2
as the first end approaches the end of the power stroke, the first end of the prime mover's output accelerates, without an additional force applied to the prime mover's output
Data Source
AI summary
A device for amplifying a force includes a prime mover configured to receive a first force, and a secondary mover configured to generate a second force that is greater than the first force in response to the prime mover receiving the first force. The prime mover includes an output that, in response to the first force, rotates about a first axis through a power stroke defined by an angular displacement that is less than ninety degrees. The prime mover's output includes a first end that revolves about the first axis during the power stroke. The secondary mover includes an input, an output, and a body. The input includes a second end that is coupled with the first end of the prime mover's output, and that, as the first end of the prime mover's output revolves about the first axis through the power stroke, the second end of the secondary mover's input also revolves about the first axis and moves relative to the secondary mover's body. The secondary's mover's output is configured to apply the second force to an object. The secondary mover's body is pivotally anchored at a location such that as the first end of the prime mover's output revolves about the first axis through the power stroke, the body of the secondary mover pivots about a second axis that passes through the location. The position of the device's secondary mover relative to the first end of the prime mover's output is such that, as the first end approaches the end of the power stroke, the first end of the prime mover's output accelerates, without an additional force applied to the prime mover's output.