Adjustable Limb Pocket for Bow Draw Weight and Brace Height
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Solution Overview
Problem
Existing archery bows lack the ability to adjust both draw weight and brace height simultaneously without introducing inaccuracies, and conventional adjustment structures are inadequate for providing consistent accuracy and user forgiveness.
Innovation Solution
The implementation of adjustable limb pocket systems that allow limbs to slide relative to the riser, enabling precise adjustment of both draw weight and brace height while the bow is in tension, using mechanisms like threaded bolts and turnbuckles to facilitate continuous adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a pivot design is used to adjust draw weight, then draw weight adjustment is enabled, but brace height changes and inaccuracies are introduced
Solution Approach 1:
The limb pocket system is divided into separate adjustment components: a limb pocket for brace height adjustment and a limb bolt for draw weight adjustment. This segmentation allows independent control of each parameter without affecting the other, resolving the contradiction between draw weight adaptability and brace height precision.
Solution Approach 2:
The patent introduces an intermediary limb pocket structure that mediates between the limb and the pivot point. This intermediary allows draw weight adjustment through the limb bolt while maintaining a stable, accurate brace height reference point, eliminating the direct coupling that causes inaccuracies in conventional pivot designs.
2Adaptability or versatility
If conventional adjustment structures are used, then some parameter adjustment is possible, but simultaneous adjustment of both draw weight and brace height is not achieved
Solution Approach 1:
The patent merges the limb pocket and limb bolt into a single integrated adjustment system. The limb pocket provides brace height adjustment while the limb bolt provides draw weight adjustment, and both functions are combined in one location at the limb attachment point. This merging achieves simultaneous adjustment of both parameters without requiring separate complex systems.
Solution Approach 2:
The limb pocket system serves multiple functions: it acts as both the attachment point for the limb and the adjustment mechanism for both brace height and draw weight. This multi-functionality reduces overall system complexity while enabling comprehensive parameter adjustment.
3Manufacturing precision
If the bow is de-tensioned for adjustment, then precise adjustment is possible, but adjustment time and loss of shooting readiness increase
Solution Approach 1:
The adjustment mechanism allows continuous adjustment of draw weight and brace height while the bow remains in tension. The limb bolt can be adjusted without de-tensioning the bow, maintaining continuous readiness for shooting while enabling precise parameter adjustments. This eliminates the interruption and time loss associated with de-tensioning for adjustment.
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
This solution allows for quick and precise adjustment of draw weight and brace height without de-tensioning the bow, enhancing accuracy and user forgiveness by enabling the bow to be configured to suit individual archers, while also providing improved performance and strength characteristics with reduced weight.
Implementation Method 1
using mechanisms like threaded bolts and turnbuckles to facilitate continuous adjustment
Implementation Method 2
As the bow is drawn by pulling back on the string, energy is stored in the limbs. When the string is released, the string is propelled rapidly forward and energy is transferred via the string to an arrow to be projected by the bow.
Data Source
AI summary
Archery bow adjustment systems that enable adjustment of both the draw weight and the brace height of the bow. The adjustment system includes a plate mounted on an end of a riser of the bow. The plate supports a limb of the bow and is adjustably positionable relative to the riser.