Hand-Pumped Hydraulic Lug Nut Tool
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Solution Overview
Problem
The existing methods for removing or tightening vehicle lug nuts require substantial physical effort and often rely on external power sources, posing safety risks and accessibility issues, especially for individuals with physical limitations or in situations where power is not available.
Innovation Solution
A portable device utilizing a housing with fluid conduits and gears, powered by a hand pump, which uses hydraulic fluid to rotate an impeller and engage socket gears to tighten or loosen lug nuts without requiring significant user strength or external power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a pneumatic impact wrench or mechanical device is used to tighten lug nuts, then the tightening force and reliability are improved, but the device requires external power sources and is not portable
Solution Approach 1:
The patent uses a hand-operated hydraulic pump to generate hydraulic pressure that drives a hydraulic motor, which in turn rotates the socket gear to tighten or loosen lug nuts. This hydraulic system provides high torque output from a compact, portable device without requiring external electrical power sources.
2Ease of manufacture
If substantial force is applied by hand to remove or tighten lug nuts, then the operation can be performed without mechanical assistance, but the risk of injury and accidents increases
Solution Approach 1:
The patent introduces a hydraulic transmission system as an intermediary between the user's hand pump input and the lug nuts. This intermediary mechanism multiplies the user's input force through hydraulic pressure, providing sufficient tightening force while keeping the user at a safe distance from the wheel and lug nuts, thereby reducing injury risk.
3Ease of operation
If mechanical or pneumatic assistance is used to tighten lug nuts, then the ease of operation is improved for individuals with physical limitations, but the device requires external power sources that are not readily available
Solution Approach 1:
The device is designed to be self-powered through a hand-operated hydraulic pump that the user operates directly. The hydraulic fluid circulates within the device, and the user's manual pumping action generates the hydraulic pressure needed to drive the hydraulic motor. This self-contained system requires no external electrical power sources, making it fully portable and usable anywhere.
4Adaptability or versatility
If a portable hand-operated device is used, then the adaptability and portability are improved, but the tightening force and power output are reduced
Solution Approach 1:
The patent employs a hydraulic motor that converts hydraulic pressure into rotational mechanical power. The hydraulic system provides high power density, enabling the compact hand-operated device to generate sufficient torque to tighten and loosen lug nuts on vehicles, despite the limited input power from manual pumping.
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 safe removal or tightening of lug nuts using only human effort, eliminating the need for electrical power and reducing the risk of injury, and can be used by individuals with physical limitations in various settings.
Implementation Method 1
A hand pump associated with the device is operable to draw fluid within the reservoir into the first conduit, and also to force the fluid in the first conduit through the second conduit and into the receiving chamber
Implementation Method 2
fluid entering the receiving chamber impinges on the impeller and causes rotation of the impeller
Implementation Method 3
The socket gears each include a toothed perimeter engaging the internal perimeter of the impeller such that rotation of the impeller causes a corresponding rotation of the socket gear
Data Source
AI summary
A portable device for tightening or removing lug nuts includes a housing defining an interior reservoir, a first conduit, and a second conduit. The first conduit is in fluid communication with the interior reservoir and the second conduit is in fluid communication with the first conduit. A receiving chamber is provided within the housing and is also in fluid communication with the second housing. A hand pump associated with the device is operable to draw fluid within the reservoir into the first conduit, and also to force the fluid in the first conduit through the second conduit and into the receiving chamber. A first gear is rotatably disposed within the housing. A plurality of second gears are rotatably disposed within the housing. The plurality of second gears engage the first gear so that rotation of the first gear causes a corresponding rotation of the plurality of second gears. Each of the plurality of second gears is configured to engage a lug nut associated within the wheel of a vehicle.