Flexible Valve Extension Knob for Remote Propane Tank Access
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Solution Overview
Problem
Users of propane grills face challenges in accessing and operating the main valve on propane tanks, which can be inconvenient and hazardous, especially when the tank is positioned out of reach or behind the grill.
Innovation Solution
An extension device comprising a user knob, a flexible connector, and an adaptor that allows remote operation of the valve, enabling the user to open and close the main valve without having to physically access the tank by transferring rotational motion through a flexible rod and secure attachment mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the main valve knob is positioned on the propane tank, then the valve can be operated directly, but the user must physically access the tank which may be positioned out of reach or behind the grill, creating inconvenience and safety hazards
Solution Approach 1:
The patent introduces an extension device as an intermediary between the user and the main valve. This device includes a rod mechanism with a user-operated knob positioned away from the tank, allowing the user to operate the valve remotely without needing to reach behind or below the hot grill surface
Solution Approach 2:
The extension device extends the operational interface in a spatial dimension away from the tank location. By positioning the user knob at a different location (on the grill surface or nearby structure) and using a rod mechanism to transmit rotational motion, the system changes the spatial relationship between user and valve, enabling remote operation
2Area of stationary object
If the propane tank is positioned behind or below the grill for space efficiency, then the grill area is maximized, but the valve becomes inaccessible requiring user to bend or lean over
Solution Approach 1:
The extension rod acts as a mediator that bridges the spatial gap created by positioning the tank in an optimized location. The rod transmits mechanical motion from a user-accessible location to the valve, allowing the tank to remain in its space-efficient position while maintaining ease of operation
3Reliability
If the main valve is kept closed to prevent gas leakage and inadvertent ignition, then safety is improved, but the user cannot quickly open it when needed without accessing the tank
Solution Approach 1:
The extension device enables rapid valve operation by providing immediate access to the valve control mechanism. The user can quickly rotate the extension knob to open the valve without the delay of locating and reaching the tank, while the valve remains closed during storage for safety
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 extension device improves user convenience and safety by allowing valve operation from a distance, reducing the risk of accidents and potential gas leaks, while accommodating various tank positions and sizes.
Implementation Method 1
enabling the user to open and close the main valve without having to physically access the tank by transferring rotational motion through a flexible rod
Data Source
AI summary
An extension device for remotely opening and closing a valve from a user knob is described. The device includes a flexible connector that allows the user knob to be positioned in various places relative the valve. One use for the disclosed device is with a gas grill, wherein the gas tank is placed in a position that is not easily accessible or is difficult for some persons to access. The extension device may be mounted in various positions on or near the grill allowing the user to open and close the gas tank's valve before and after use of the grill.