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Child-resistant lighter

a lighter, child-resistant technology, applied in the direction of fuel lighters, combustion processes, lighting and heating equipment, etc., can solve the problem of user's hardness and exertion of for

Inactive Publication Date: 2009-07-30
HUMBOLDT STATE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The invention is a children-resistant lighter that aims to improve safety by reducing the risk of fire accidents caused by children. The lighter has a lever with a slant surface that reduces the force exerted by the user's thumb, while still being able to be used by an adult. The lever has a cross-section in rhombus, rectangular, or new-moon shape. The lighter is designed to prevent accidental ignition and protect children from causing fire accidents."

Problems solved by technology

This will make the user harder to exert force to ignite the lighter but the exerting force required is still within the capability of the user while makes the children harder to cause fire accident.

Method used

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Experimental program
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first embodiment

[0028]As shown FIG. 2A, in the invention, the cross-section of the pressing part appears a rhombus shape.

second embodiment

[0029]As shown FIG. 3A, in the invention, the cross-section of the pressing part appears a rectangular shape with a chamfered vertex angle.

third embodiment

[0030]As shown FIG. 4A, in the invention, the cross-section of the pressing part appears a new-moon shape.

[0031]As shown again in FIG. 2A, FIG. 3A, and FIG. 4A, the angle α being the horizontal upward slant angle is within a range of 10°≦α≦20° and the slant surface of the pressing part makes an angle θ with respect to the lever (5) which makes a downward slant angle θ-α. If the exerting force of the user to exert force on the pressing part by his / her thumb is P, then the effective exerting force acting on the lever is P cos θ where the effective range of the angle θ is 27°≦θ≦60°, namely, the minimum and maximum value of θ are 27° and 60° respectively, thereby the range of effective exerting force is 0.5 P≦P cos θ≦0.9 P. In other words, the exerting force P of the user to press the pressing part and the file wheel by his / her thumb is reduced into 0.9P to 0.5P. As a result, the lighter of the invention is capable of protecting the children from causing fire accident to achieve the eff...

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PUM

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Abstract

A child-resistant lighter includes a main body, a wheel racket, a file wheel, a metal cap, and a lever is disclosed. The lever having an upward slant angle of α is within the range 10°≦α≦20° further includes a pressing part, a base, and a slipping hole. Both sides of the base furnish a salient part for acting as the pivot point of the lever, and the salient part is fitted into a securing hole provided at the bottom portion of the file wheel. The securing holes are used as the pivotal bearing seat for bearing the salient part. The pressing part having a slant surface forms an angle θ with respect to the lever and has a horizontal downward slant angle(θ-α). When it comes to use, the user exerts a force P by pressing on the slant surface of the pressing part and the file wheel with his / her thumb making the lighter generate flames. The effective force acting on the lever is P cos θ where the effective range of θ is 27°≦θ≦60°, thereby the range of the effective force is 0.5P≦P cos θ≦0.9P. Therefore, the child-resistant lighter of the invention is capable of preventing the children from carelessness or accidental igniting, thereby improving the safety efficacy of the child-resistant lighter. As a result, the lighter of the invention is capable of protecting the children from causing fire accident to achieve the efficacy of safety usage of the lighter. In this way, the lighter of the invention is capable of improving the efficacy of safety usage. Nevertheless, the exerting force P is still within the range of an adult user.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention relates to a children-resistant lighter, and more particularly, to a children-resistant lighter that makes use of the exerting force on the slant pressing part at an end of the lever of the lighter to make the effective force exerting on the lever diminish for protecting the children from easily playing around the lighter to cause fire accident for achieving the efficacy of safety usage.[0003]2. Description of the Prior Art[0004]The simple-type lighter provides consumers with conveniency and low cost, and claims to be a great breakthrough in the contemporary era ever since the first use of fire in material civilization of human history. However, the lighter brings forth concerns on safety consideration. Particularly, the child playing with the lighter may result in fire accident. According to an old saying, a tiny spark may spread to become a prairie fire. Therefore, it cannot be too careful to use the lig...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F23Q1/02
CPCF23Q2/161F23Q2/164
Inventor HSU
Owner HUMBOLDT STATE UNIVERSITY
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