Universal Puller with Synchronized Claw Mechanism
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Solution Overview
Problem
Conventional pullers are hazardous due to independent claw engagement, require multiple sizes for different annular elements, and have limited pivoting angles, making them inconvenient and expensive to use.
Innovation Solution
A puller design featuring a collar with slots and pivotal connectors, synchronized by a movable synchronizer with protuberances, allowing for adjustable claw engagement and extended pivoting range, enabling safe and efficient detachment of annular elements without the need for multiple tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If claws are independently engaged with annular element, then each claw can be operated independently, but accidental disengagement occurs causing safety hazards
Solution Approach 1:
The patent connects multiple claws through a common body structure with slots that guide claw movement. The claws are mechanically linked so they move together as a unified system, preventing individual claw disengagement while maintaining coordinated operation. This merging approach ensures that all claws engage and disengage simultaneously, eliminating the safety hazard of accidental independent disengagement.
2Stability of the object's composition
If lugs of synchronizer are inserted in slots of claws, then pivoting of claws is synchronized, but pivoting angle is limited to small angle
Solution Approach 1:
The patent employs a movable synchronizer that can shift position along the slots of the claws. This dynamic adjustment capability allows the synchronizer to accommodate different pivoting angles by changing its relative position, thereby enabling both synchronization and adaptability to various annular element sizes without limiting the pivoting range.
3Stability of the object's composition
If lugs of synchronizer are inserted in slots of claws, then claws are synchronized, but replacement of claws with different lengths is difficult
Solution Approach 1:
The patent designs the synchronizer with separate, independently replaceable claws that are not permanently fixed. Each claw can be individually removed and replaced through the slot mechanism without affecting the synchronization system. This segmentation approach maintains claw synchronization while enabling easy replacement of worn or damaged claws, improving ease of manufacture and maintenance.
4Adaptability or versatility
If multiple pullers of various sizes are purchased, then different annular elements can be handled, but cost and convenience are reduced
Solution Approach 1:
The patent creates a universal puller design where the body with slots and the movable synchronizer can accommodate claws of various lengths and configurations. This multi-functional capability allows a single puller tool to handle different sizes of annular elements by simply adjusting the synchronizer position or replacing claws, eliminating the need to purchase and maintain multiple specialized pullers.
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 provides a safe, efficient, and versatile puller that can handle various sizes of annular elements with a wide pivoting range, reducing user risk and eliminating the need for multiple puller sizes, thus enhancing convenience and cost-effectiveness.
Implementation Method 1
The threaded rod is rotated relative to the collar 90 to move the collar 90 and the claws 91 away from the axle
Implementation Method 2
A spring 95 is compressed between the synchronizer 96 and the collar 90. The spring 95 moves the synchronizer 96 away from the collar 90
Data Source
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AI summary
A puller includes a collar, claws, a synchronizer and a threaded rod. The collar includes a space, a screw hole in communication with the space, slots in communication with the space, and pivotal connectors located corresponding to the slots. The claws are pivotally connected to the pivotal connectors. Each of the claws includes a protuberance movable in and along a corresponding one of the slots. The synchronizer includes a receiving portion for receiving the protuberances. The synchronizer is movable in the collar between an opening position and a closing position. In the opening position, the synchronizer opens the claws by the protuberances. In the closing position, the synchronizer closes the claws by the protuberances. The threaded rod is inserted in the screw hole of the collar.