Rack and Pinion Sight for Vertical Adjustment
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Solution Overview
Problem
Current vertically adjustable sights for firearms and bows have numerous moving parts, leading to increased manufacturing costs, failure rates, wear, and susceptibility to external elements, which can affect accuracy due to added weight and complexity.
Innovation Solution
A sight design featuring a minimal number of moving parts, utilizing a rack-and-pinion mechanism with a spur gear and lock nut system to provide precise vertical adjustment while minimizing weight and vulnerability to debris, allowing for fine calibration and adaptability to various equipment sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a gearing system with multiple moving parts is used to adjust the sight pin, then the sight can be vertically adjusted to account for external factors, but the number of moving parts increases leading to higher manufacturing costs, increased failure rate, and more wear
Solution Approach 1:
The patent extracts and eliminates unnecessary moving parts from the adjustment mechanism. Instead of using a complex gearing system with multiple components, the invention uses a simplified mechanism where a single rotating member directly drives the sight pin through a minimal number of essential components, removing extraneous parts that contribute to complexity and failure points
Solution Approach 2:
The rotating member serves multiple functions simultaneously: it provides the adjustment input, drives the sight pin through gear engagement, and includes integrated locking features. This multi-functionality reduces the need for separate components for each function, thereby reducing the overall number of moving parts while maintaining full adjustment capability
2Adaptability or versatility
If multiple moving parts are used in the sight mechanism, then vertical adjustment can be achieved, but the weight of the sight increases affecting accuracy due to fatigue
Solution Approach 1:
The patent removes redundant moving parts from the adjustment mechanism, keeping only the essential components needed for vertical adjustment. This extraction of unnecessary mass directly reduces the overall weight of the sight while preserving the full range of adjustment capabilities
Solution Approach 2:
The rotating member is designed to perform multiple functions with a single component: it provides rotational input, engages with the gear mechanism, and incorporates locking features. This consolidation of functions into fewer components significantly reduces the total weight compared to traditional multi-component systems
3Adaptability or versatility
If a complex gearing system with multiple slots is used, then adjustment range can be increased, but the opportunity for external elements like dirt or debris to interfere with operation increases
Solution Approach 1:
The patent eliminates multiple slots and complex gear paths that create numerous exposure points for debris. The simplified mechanism uses a single rotational path with minimal exposure points, removing the slots and intermediate components that would allow dirt and debris to interfere with operation
Solution Approach 2:
Instead of allowing the sight pin to move through multiple slots and complex paths, the invention inverts the approach by keeping the sight pin constrained to a single protected path and rotating the driving mechanism externally. This reversal minimizes exposure to harmful external elements while maintaining the full adjustment range
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 solution enhances accuracy and durability by reducing the number of parts prone to defects and external interference, maintaining precision while being adaptable to different firearms and bows, thus improving overall performance and reliability.
Implementation Method 1
A rack is engaged with the pinion, such that when the pinion rotates in a first direction the rack is raised and when the pinion is rotated in a second direction the rack is lowered
Implementation Method 2
A spur gear is located within the aperture that is engaged with the vertical gear. When the cylindrical handle is rotated in a first direction, the spur gear is rotated in the first direction, and the engagement between the spur gear and the vertical gear causes the vertical gear and scope head to move upward
Implementation Method 3
When the wing nut is tightened, the wing nut contacts the washer to thereby prevent the cylindrical handle from rotating with respect to the post
Data Source
AI summary
A sight apparatus with a rack and pinion mechanism, used to raise or lower a scope head and/or sight pin. The sight apparatus may also include a number of adjustment mechanisms for pivotally adjusting the sight, a locking mechanism and selectively interchangeable spools, e.g. spools for different arrow velocity and/or trajectory.