Arcuate Rocker Nail Puller for Multi-Directional Extraction
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Solution Overview
Problem
Existing nail pullers are not easily securable to the nail and lack versatility in direction of operation, making them inefficient for removing nails from various angles and surfaces.
Innovation Solution
A lever arm assembly with an arcuate gripping jaw plate and a pivotally secured arcuate rocker base plate allows for concentric movement, enabling secure grip and easy removal of nails in either direction, with a nail claw for exposing embedded heads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional claw hammers or pivotable jaw nail pullers are used, then nail removal function is provided, but the device is not easily securable to the nail and lacks versatility in direction of operation
Solution Approach 1:
The patent employs arcuate gripping jaw plate and arcuate rocker base plate with curved surfaces that conform to each other, enabling the device to be secured to nails from multiple directions. The arcuate geometry allows the gripping slots to engage nail shanks regardless of approach angle, resolving the contradiction between versatility and ease of operation.
Solution Approach 2:
The pivotable connection between the rocker base plate and lever arm assembly creates a dynamic mechanism that adapts to different operational directions. The pivot joint allows the device to rock clockwise or counterclockwise, enabling secure engagement with nails from various angles while maintaining ease of operation through natural rocking motion.
2Reliability
If conventional nail pullers are used, then nail removal is possible, but gripping pressure does not increase during operation and security to nail is poor
Solution Approach 1:
The rocking motion of the base plate dynamically increases gripping pressure on the nail shank during extraction. As the user rocks the device, the arcuate geometry converts rotational motion into increasing clamping force between the gripping slots, simultaneously improving grip security and maintaining ease of operation through natural rocking motion.
Solution Approach 2:
The arcuate gripping jaw plate and rocker base plate with complementary curved surfaces create a self-centering gripping mechanism. The curved geometry ensures that during rocking motion, the gripping slots maintain optimal contact with the nail shank, increasing grip security while allowing easy operation through simple rocking movements.
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 design provides enhanced security and ease of use by allowing nail removal in either hand direction with increasing grip pressure during rocking motion, facilitating efficient extraction of nails from various angles and surfaces.
Implementation Method 1
The arcuate rocker base plate is pivotally movable concentrically relative to the arcuate gripping jaw plate
Implementation Method 2
leverage the nail upward by rocking a bottom surface of the arcuate rocker base plate on a surface in which the nail is embedded
Implementation Method 3
the gripping pressure of the nail puller on the nail being removed proportionately increases with the rocking rotation of the lever arm
Data Source
AI summary
A nail puller having a lever arm assembly with an arcuate gripping jaw plate secured to a bottom end, and a base assembly pivotally secured to the bottom portion of the lever arm assembly, the base assembly includes an arcuate rocker base plate pivotally secured to a bottom portion of the lever arm assembly for concentric pivotal movement relative to the arcuate gripping jaw plate of the lever arm assembly. The arcuate gripping jaw plate of the lever arm assembly and the arcuate rocker base plate of the base assembly are provided with transverse open-ended slots for simultaneously receiving the shank of a nail to be extracted. The nail shank received within the slots is gripped and leveraged out by rotating the upper lever arm assembly in either a clockwise or counterclockwise direction.