Table Saw Rise Stand Pivot Layout for Safe Auto Deployment
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Solution Overview
Problem
Existing power tool stands, such as those for table saws, are cumbersome, dangerous, and prone to accidents due to spring biasing mechanisms, require significant user effort to set up, and can damage surfaces with exposed metal feet, making them inconvenient and unsafe for construction sites.
Innovation Solution
A stand for power tools featuring strategically placed pivot points that utilize the weight of the saw to automatically move between closed, intermediate, and open positions, incorporating anti-tip feet and a latching mechanism for safe and ergonomic operation, with protective plates to prevent surface damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a spring biasing mechanism is used to automatically unfold the stand, then the stand can automatically move to the open position, but it becomes dangerous if the mechanism is released when the saw weight is not properly positioned, causing rapid unfolding that can strike and injure users
Solution Approach 1:
The patent converts the potentially harmful spring force into a beneficial automatic deployment mechanism by strategically positioning pivot points so that the saw's weight itself becomes the controlling factor. The mechanism only unfolds when the saw is properly positioned on the stand, turning what could be a dangerous uncontrolled release into a safe, weight-dependent automatic operation.
Solution Approach 2:
The stand uses the saw's own weight to automatically drive the unfolding mechanism without requiring external power or complex control systems. The pivot point geometry is designed so that placing the saw on the stand naturally causes the legs to unfold to the correct position, making the system self-actuating and eliminating the need for spring biasing mechanisms.
2Ease of operation
If the user manually lifts the stand to the open position, then the stand can be positioned at working height, but the user must lift a substantial portion of the saw's weight which is typically relatively heavy (60 pounds or more)
Solution Approach 1:
The stand is designed to automatically unfold using the saw's weight as the driving force. The pivot points are positioned so that when the saw is placed on the stand, gravity causes the legs to automatically swing outward and lock into the open position, completely eliminating the need for the user to manually lift or position the heavy stand.
Solution Approach 2:
The mechanism uses gravitational potential energy of the saw to drive the unfolding action. By positioning the pivot points at specific locations, the system allows the saw's weight to naturally convert potential energy into the kinetic energy needed to unfold the legs, requiring minimal user intervention.
3Stability of the object's composition
If metal feet with rubber bumpers are used on the stand, then the stand can provide stable support, but the rubber bumpers are prone to falling off during use or transport which leaves exposed metal feet that can damage finished floors and are prone to rusting
Solution Approach 1:
The patent replaces metal feet with composite material feet made from durable plastic or polymer materials that inherently provide both stability and floor protection. These composite feet are resistant to rust and deformation while maintaining the necessary friction and stability for supporting the saw on construction sites.
Solution Approach 2:
The material property of the feet is changed from metal to composite material, fundamentally altering the characteristics from prone-to-rust metal surfaces to rust-resistant, floor-friendly composite surfaces that maintain adequate friction for stability without requiring removable rubber bumpers.
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 stand provides ergonomic and safe operation, reduces the risk of accidents, and minimizes surface damage by automatically adjusting to working positions with minimal user effort, enhancing safety and convenience in construction environments.
Implementation Method 1
strategically placed pivot points which utilize the weight of the saw to cause the stand to automatically move to an intermediate position
Data Source
Figure 1
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AI summary
A table saw system (100) includes a table saw (102), and a stand (104) including a table saw coupling assembly (106), an intermediate support (168, 170) pivotably coupled to the coupling assembly (106), and a lower support (142, 144) pivotably coupled to the intermediate support through a second pivot. A longitudinal support (110, 112) pivotably connects to the coupling assembly (106) through a third pivot, and pivotably connects to the lower support through a fourth pivot. The stand is alternatively movable from an intermediate position to a closed position whereat the table saw (102) is vertically oriented, or an open position, whereat the table saw (102) is horizontally oriented, without passing through the other of the closed and open position. The table saw (102) is vertically oriented in the intermediate position with the second pivot closer to a vertical plane extending through the fourth pivot than when the stand is in the closed position. Movement from the closed position to the intermediate position is automatic.