Wrench Extender Angled Neck Leverage Reach
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wrench extensions primarily focus on increasing leverage rather than extending reach, which is crucial when dealing with nuts or bolts in tight, deeply recessed spaces.
Innovation Solution
A wrench extender that securely holds a wrench handle with vertically-opening clamping receptacles and features a downwardly-angled neck with a ramp and stop, allowing both leverage and reach enhancement, accommodating double-ended wrenches and their offset angles, enabling effective engagement with nuts or bolts from various angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a pipe is slid over the wrench handle to extend reach, then reach is improved, but leverage is reduced
Solution Approach 1:
The patent introduces an intermediary device (the extender assembly with base and neck) that mediates between the wrench handle and the extended reach requirement. The base receives the wrench handle while the neck extends the reach, and together they provide both leverage multiplication and extended reach through their combined mechanical structure.
Solution Approach 2:
The patent transitions from a simple linear extension (pipe sliding over handle) to a multi-dimensional structure with a base portion and an angled neck portion. This dimensional change allows the extender to provide both vertical support for the wrench handle and horizontal extension for reach, resolving the trade-off between the two functions.
2Force
If an angled adapter bar with U-bolt is used to multiply force, then leverage is improved, but reach is not extended
Solution Approach 1:
The patent merges the functions of leverage multiplication and reach extension into a single integrated extender assembly. The base portion provides the leverage multiplication through its reception of the wrench handle, while the neck portion extends the reach, combining both functions that were previously separate.
Solution Approach 2:
The extender assembly is designed to perform multiple functions simultaneously: it acts as a handle supporter, a leverage multiplier, and a reach extender. This multi-functionality allows a single device to address both leverage and reach requirements without needing separate components.
3Length of moving object
If a double-ended wrench is used to access tight spaces, then reach is improved, but the offset angle reduces effectiveness
Solution Approach 1:
The patent incorporates an asymmetric angled neck portion that specifically accommodates the offset angle of double-ended wrenches. This asymmetric design allows the wrench to be positioned at the correct angle for accessing recessed fasteners while maintaining proper mechanical alignment and effectiveness.
Solution Approach 2:
The patent applies local quality by providing specific geometric features (the angled neck with particular angle and the stop) at the location where the wrench interacts with the extender. This localized geometric adaptation ensures proper fit and functionality for double-ended wrenches without affecting the overall structure.
Data Source
AI summary
A wrench extender useful for extending both the reach and leverage of most double-ended wrenches. The extender includes a flat base with spaced clamping receptacles for receiving and securing a wrench handle, the receptacles selectively closed with clamping means locking the wrench handle in the receptacles with a compressive and/or frictional fit. The wrench is further secured by its inner non-free end in a downwardly-angled neck or relief connecting the wrench-supporting base and an aligned grip. In a first form, the neck is provided with a vertical stud for engaging the inner end of the wrench to prevent longitudinal shifting. In a second form, the neck terminates in a vertical wall adjacent the grip to longitudinally stop the inner end of the wrench.