Combustion – Correlation of fuel or power supply with component movements...
Reexamination Certificate
2000-09-20
2001-10-02
Price, Carl D. (Department: 3743)
Combustion
Correlation of fuel or power supply with component movements...
C431S255000, C431S344000
Reexamination Certificate
active
06296476
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of The Invention
The present invention relates to a gas burner and, more specifically, to a safety control mechanism for use in a gas burner, for example, the gas burner shown in U.S. patent application Ser. No. 09/481,383, which can be locked to stop the gas burner from being triggered by an accident.
2. Description of Related Art
A burning device may be used to make fire instead of matches. Further, handy gas burners, for example, hand gas torches are popularly accepted by consumers for the advantages of high mobility and ease of use. However, these handy gas burners must be kept away from reach of children. Because conventional handy gas burners can easily accidentally be triggered to make fire, they are not safe in use. In order to eliminate this problem, most advances countries have defined safety rules, enforcing gas burner manufacturers to provide gas burners with safety means. Similar safety means have been seen in U.S. Pat. No. 5,460,521 (equivalent to Taiwan Utility Model No. 106178) and U.S. Pat. No. 5,741,128 (equivalent to Taiwan Utility Model No. 137470), which were issued to the present inventor. A gas burner with safety means can be locked when not in use, and the safety means must be unlocked before each use of the gas burner. However, according to conventional designs, the safety means must be locked manually after each use. This manual locking procedure is complicated.
SUMMARY OF THE INVENTION
The invention has been accomplished to provide a gas burner safety control mechanism, which eliminates the aforesaid drawbacks.
According to the preferred embodiment of the present invention, the gas burner safety control mechanism comprises a housing formed of a left shell and a right shell, the housing comprising a top chamber disposed at a top side thereof, a keyway-like slot and a retaining slot disposed at two opposite lateral sides thereof; a slide button mounted in the top chamber of the housing, the slide button comprising a bottom chamber adapted to hold a piezoelectric device in the top chamber of the housing, and a bottom rod; and a stop device mounted in the housing, the stop device comprised of a slide longitudinally slidably mounted in the housing, a control button, a locating rod, and a follower plate, the slide comprising a front rod forwardly extended from a front side thereof, a first spring mounted on the front rod and stopped against an inside wall of the housing, a top hole disposed at a top side thereof, a second spring mounted in the top hole, a bottom barrel downwardly extended from a bottom side thereof, a third spring mounted in the bottom barrel, a top protruded block stopped against the bottom rod of the slide button, a notched rear coupling portion disposed at a rear side thereof and coupled to the gas valve of a fuel tank, and a vertical mounting hole through top and bottom sides thereof, the follower plate and the slide being fastened together and disposed at two sides of the keyway-like slot of the housing, the follower plate comprising a stepped through hole, the control button being mounted in the stepped through hole of the follower plate and connected to the second spring of the slide, the locating rod having a top extension connected to the third spring of the slide and a bottom extension inserted into the retaining lot of the housing. The locating rod is disengaged from the retaining slot when pressed down, enabling the slide to be pushed forwards to trigger the piezoelectric device and to pull open the gas valve of the fuel tank and the slide is locked when releasing the slide button and pressing the control button to force the control button into engagement with a part of the keyway-like slot after the piezoelectric device had been triggered and the gas valve of the fuel tank had been opened.
REFERENCES:
patent: 5460521 (1995-10-01), Tsai
patent: 5647738 (1997-07-01), Tsai
patent: 5741128 (1998-04-01), Tsai
Dougherty & Troxell
Price Carl D.
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