Safety Gaff with Pivot Hook and Button Lock
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Solution Overview
Problem
Fishing gaffs lack a mechanism to securely fold back the hook, posing a risk of accidental injury and entanglement with the hook point when not in use.
Innovation Solution
A fishing gaff with a pivotally affixed hook that can be selectively folded back against the handle, featuring a finger-actuated mechanism for locking and releasing the hook in both open and closed positions, and a torsion spring bias to return the hook to its open disposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the hook is made sharply pointed and barbed for effective gaffing, then the gaffing functionality is improved, but the risk of accidental injury and entanglement increases
Solution Approach 1:
The hook is designed to be movable between two stable positions: an open position for gaffing operations and a closed position for safety storage. The pivot mechanism allows the hook to dynamically change its configuration based on operational needs, transforming from a dangerous exposed state to a safe retracted state.
Solution Approach 2:
The harmful aspect (sharp hook point) is extracted from the operational state by folding it back against the handle. The locking mechanism secures the hook in the closed position, effectively removing the dangerous element from the environment when not in use, while preserving it when needed for gaffing.
2Object-affected harmful factors
If a locking mechanism is added to secure the hook in closed position, then the safety is improved, but the device complexity increases
Solution Approach 1:
The locking mechanism is designed to be self-actuating through user interaction. Pushing the button releases the locking pin, and releasing the button allows the spring to automatically engage the pin with the slot, securing the hook without requiring complex control systems or additional actuators.
Solution Approach 2:
A locking pin serves as an intermediary element between the button and the hook positioning system. The pin translates the simple button press into the appropriate mechanical action of releasing or securing the hook, providing a straightforward mechanical linkage that avoids complexity.
3Ease of operation
If a button mechanism is added for releasing the hook, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The button mechanism is self-actuating: pressing the button directly pulls the locking pin out of the slot, releasing the hook. Releasing the button allows the spring to automatically engage the pin, securing the hook. This self-service design eliminates the need for complex control systems, motors, or additional actuators.
Solution Approach 2:
The locking pin acts as an intermediary that translates the simple button press into the appropriate mechanical action. The pin provides a direct mechanical linkage between the button and the hook positioning, allowing easy operation without requiring complex transmission mechanisms.
4Ease of operation
If the hook is left in open position for accessibility, then the ease of operation is improved, but the safety deteriorates
Solution Approach 1:
The hook is designed to be movable between an open position for operational accessibility and a closed position for safety. The pivot mechanism with locking and releasing capabilities allows the system to dynamically adapt its configuration based on whether the hook needs to be accessible for use or safe for storage.
Solution Approach 2:
The spring applies a preliminary bias force that continuously urges the hook toward the closed safe position. This preliminary action ensures that the hook defaults to the safe state and requires deliberate user action (button press) to move to the open operational state, preventing accidental exposure of the sharp point.
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
Significantly reduces the risk of accidental injury and entanglement by providing a secure closed position for the hook while maintaining functionality for gaffing purposes, ensuring safety and convenience.
Implementation Method 1
a bias for urging the hook toward its open disposition
Implementation Method 2
a pointed fish hook rotatably affixed to one end of the handle
Data Source
AI summary
An elongated handle has a pointed fish hook rotatably affixed to one end of the handle, the hook having two operating dispositions, a first disposition wherein the hook is open for gaffing purposes and a second disposition wherein the hook folded back against the handle to block the hook point for safety. A mechanism releasably secures the hook at either disposition. A button actuated mechanism releases the hook from either disposition so that the hook can be moved from one operating disposition to the other. Preferably the gaff further includes a bias for urging the hook toward its open, gaffing disposition.