Integrated AR-Style Crossbow Mainframe Barrel Design
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Solution Overview
Problem
Existing crossbow designs require costly and complex adapter devices to integrate an assault rifle style mainframe barrel with a butt stock, complicating assembly and increasing production costs.
Innovation Solution
A single, directly receivable assault rifle style mainframe barrel for a crossbow that combines AR style butt stock mounting elements with crossbow barrel extrusion features, extending behind and in front of the string latch housing, and can be fabricated using plastic injection molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate tube is used to couple the AR style butt stock and crossbow barrel, then the assembly is functional, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the mounting tube and crossbow barrel into a single integrated mainframe barrel component. The AR style butt stock mounts directly to the mainframe barrel without requiring a separate tube, eliminating the need for additional coupling components and simplifying the overall assembly structure.
Solution Approach 2:
The mainframe barrel serves multiple functions simultaneously: it acts as the crossbow barrel, provides mounting surfaces for the AR style butt stock, and integrates the string latch housing. This multi-functional design eliminates the need for separate specialized components.
2Reliability
If multiple separate pieces are used to achieve the desired design, then the functional requirements are met, but the manufacturing cost and assembly complexity increase
Solution Approach 1:
The patent combines multiple functional pieces into a single mainframe barrel component that can be manufactured as one piece. This integration reduces the number of parts that need to be manufactured, stored, and assembled, thereby reducing manufacturing costs and assembly complexity.
Solution Approach 2:
The mainframe barrel is designed with integrated features for mounting the AR style butt stock and housing the string latch, allowing these features to be formed as part of the single piece rather than requiring separate components to be assembled together.
3Adaptability or versatility
If adapter devices are used to integrate the mainframe barrel with the butt stock, then the integration is achieved, but the assembly process becomes more complex and costly
Solution Approach 1:
The patent eliminates the need for adapter devices by directly integrating the AR style butt stock mounting features into the mainframe barrel. The butt stock mounts directly to the mainframe barrel through built-in mounting surfaces, removing the intermediate adapter component entirely.
Solution Approach 2:
The patent removes the intermediary adapter device that would normally be needed between the mainframe barrel and AR style butt stock. The direct integration allows the two components to work together without requiring a mediating element.
Data Source
AI summary
A shooting crossbow includes two cams, two pulleys, a bow string, two cables, a string latch housing, a bow riser, a mainframe barrel and two limbs. The bow riser is enjoined with the barrel. The first and second limbs extend from the bow riser. First and second cams are pivotally retained on first and second limbs. The first and second cams retain a bowstring. The cams and pulleys retain first and second cables. The two pulleys are retained on the barrel. The mainframe barrel combines elements of an AR style butt stock mounting tube, and flight deck elements of a crossbow barrel extrusion.