Core Shaft Air Valve Shroud for Safe Pneumatic Deflation
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Solution Overview
Problem
Operators often suffer injuries while releasing air from pneumatic core shafts due to the risk of their fingers being injured or pinched as they manually release air through the bearing tube aperture, especially when loads shift during the process.
Innovation Solution
A safety system featuring a threaded air valve with a disk that threadingly engages the bearing tube aperture and an adapter for an air gun, preventing the operator's finger from entering the aperture by acting as a shroud around the air valve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If operators manually release air through the bearing tube aperture using their finger, then air release operation is simple and direct, but operator safety is compromised due to risk of finger injury or amputation
Solution Approach 1:
The patent introduces an intermediary device (adapter with finger protection member) between the operator's finger and the air valve. The adapter allows operators to release air safely by pressing the outer surface of the finger protection member rather than inserting fingers into the bearing tube aperture, eliminating direct exposure to pinching hazards while maintaining operational simplicity
Solution Approach 2:
The finger protection member is designed to prevent the harmful action (finger insertion into aperture) before it can occur. By providing a protective barrier that extends into the aperture, the system proactively blocks the dangerous sequence of events that leads to finger injury, allowing operators to perform the same releasing action without risk
2Ease of operation
If a traditional air valve is used accessible through the bearing tube aperture, then air valve access is direct and simple, but finger injury risk increases during air release
Solution Approach 1:
The adapter assembly serves as an intermediary mechanism that maintains direct access to the air valve while introducing a protective element. The finger protection member extends through the bearing tube aperture and covers the air valve, allowing operators to interact with the valve through the protective barrier rather than exposing fingers to the hazardous opening
Solution Approach 2:
The solution moves the interaction point from the internal dimension (inside the bearing tube aperture where the air valve resides) to the external dimension (outer surface of the finger protection member). This dimensional shift allows operators to perform the same function from a safe external position rather than inserting fingers into the hazardous internal space
Data Source
AI summary
An improved shaft safety pneumatic valve system in combination with a pneumatic expanding core shaft, is provided. The valve system provides a threaded air valve with a disk threadingly engaging the threaded air valve and a corresponding adapter fitted onto an air gun and adapted to engage the threaded air valve via the threaded disk. The threaded disk acts as a shroud about the air valve preventing an operator's finger from entering the bearing tube aperture to release air from the air valve.