Post Driver Extractor With Pivotable Handle And Striker Disc
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Solution Overview
Problem
Existing devices for driving and extracting posts, such as wooden stakes and metal star pickets, are cumbersome and require separate heavy tools for both functions, leading to inefficiency and wasted time when switching between driving and extracting tasks.
Innovation Solution
A single device with a hollow barrel and two longitudinal handles, one permanently fixed and one pivotable, equipped with a striker disc and a hook clamp mechanism, allowing conversion from a driving to an extracting mode without needing to remove bolts or add attachments, facilitating both functions with improved portability and noise reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate driving and extracting devices are used, then each device can be optimized for its specific function, but the overall system becomes heavy and cumbersome requiring multiple trips
Solution Approach 1:
The patent combines a post driving device and a post extracting device into a single integrated tool. The driving device includes a hollow barrel with a striker disc for driving posts, while the extracting device includes a hook mechanism that can be positioned around the post. Both functions are integrated into one device that can be carried in a single trip, eliminating the need to return for a separate extracting device.
Solution Approach 2:
The single device performs multiple functions: it can drive posts into the ground using the striker disc mechanism, and it can extract posts using the hook and lever mechanism. This multi-functionality allows one device to replace what would traditionally require two separate specialized devices, improving portability while maintaining functional capability.
2Weight of moving object
If a single device performs both driving and extracting functions, then portability is improved, but device complexity increases
Solution Approach 1:
The device is segmented into distinct functional modules: a hollow barrel for receiving the post, a striker disc for driving, a hook mechanism for extracting, and a lever system for mechanical advantage. Each module performs a specific function and can be independently understood, which manages complexity while enabling multi-functionality.
Solution Approach 2:
The device uses movable and adjustable components including a pivotable handle that can be positioned in different configurations for driving or extracting operations. The hook mechanism can be positioned around the post and the lever can be adjusted to provide mechanical advantage during extraction. This dynamic adaptability allows one device to perform multiple functions without requiring overly complex fixed mechanisms.
3Adaptability or versatility
If the pivotable handle is released to act as a lever for extracting, then extraction capability is enabled, but the driving configuration must be disassembled
Solution Approach 1:
The handle is designed to be pivotable rather than fixed, allowing it to be repositioned between a driving configuration where it aids in the driving operation and an extracting configuration where it acts as a lever for the hook mechanism. This dynamic repositioning capability enables mode conversion without requiring disassembly or complex attachment changes.
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
Enables efficient and convenient driving and extraction of posts with reduced noise and improved safety, eliminating the need for carrying multiple devices and allowing quick conversion between modes, enhancing operational efficiency and user convenience.
Implementation Method 1
at least one handle is pivotally fixed at the closed end of the barrel and releasably secured with a fastener at the other end such that said handle is utilised to facilitate driving of the post or can be released to act as a lever for extracting the post
Implementation Method 2
a hook clamp is attached to the pivotable handle by at least one linkage such that moving the handle results in an opposing movement of the clamp
Data Source
AI summary
A device for driving and extracting a post having a hollow barrel having one closed end and one open end for receiving the post, and two longitudinal handles, wherein at least one handle is pivotally fixed at the closed end of the barrel and releasably secured with a fastener at the other end such that the is utilized to facilitate driving of the post or can be released to act as a lever for extracting the post. The device also has a striker disc fixed within the barrel at the closed end with a void between the disc and closed end of the barrel to muffle the noise created during driving of a post.