Fluid handling – With indicator – register – recorder – alarm or inspection means – Position or extent of motion indicator
Reexamination Certificate
1999-03-26
2001-04-24
Shaver, Kevin (Department: 3754)
Fluid handling
With indicator, register, recorder, alarm or inspection means
Position or extent of motion indicator
C251S291000, C251S144000
Reexamination Certificate
active
06220285
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a device for adjusting/closing a gas bottle valve.
2. Description of the Relevant Art
Gas bottles or gas cylinders, used in industry in conjunction with welding as containers of combustible gas and/or shielding gas, are provided with a rotatable shut-off valve, placed in the top part of the gas bottle. The shut-off valve is provided with a regulating wheel. The valve is closed by turning the valve manually by the regulating wheel in the clockwise or anti-clockwise direction, depending on the valve type, and opened by turning in the opposite direction.
The state of the valve, i.e. whether the valve is open or closed, is difficult to determine by merely looking. Therefore, in practice, the state of the valve is checked manually by turning the regulating wheel. Sometimes it happens that a gas bottle valve is left open for a long time, e.g. over a weekend, which may lead to dangerous situations and also economic losses.
Gas bottle shut-off valves used at present are provided with a protective cap, which is open on two sides and has a handle-like neck at its top. This protective cap makes it still more difficult to open/close the valve. Further problems in the handling of the bottle result from the pressure reduction valve and associated indicators that the bottles are usually provided with.
SUMMARY OF THE INVENTION
The object of the present invention is to achieve a completely new type of valve solution that eliminates the drawbacks of prior art.
The invention is based on the idea that the gas bottle valve is provided with an accessory that allows the valve to be more easily opened and closed and at the same time acts as a valve state indicator.
The solution of the invention has several significant advantages. The state of the valve of the gas bottle can be discerned from a distance by the position of a lever comprised in the device of the invention. Moreover, the device makes it substantially easier to operate the valve. The acts of opening and closing the gas bottle are substantially easier to carry out. The valve will not be left open by mistake as often as in prior-art solutions. The device prevents the shut-off valve from being turned too far in the tightening direction, thus increasing the useful life of the valve. In a dangerous situation, the valve can be quickly closed with a single movement of the hand.
REFERENCES:
patent: 437489 (1890-09-01), Giles
patent: 868130 (1907-10-01), Russell
patent: 1111865 (1914-09-01), Serrell
patent: 1506433 (1924-08-01), Knauf
patent: 2964961 (1960-12-01), Gulick
patent: 3034371 (1962-05-01), Cantalupo et al.
patent: 3399862 (1968-09-01), Cerow
patent: 3701362 (1972-10-01), Reese
patent: 3994255 (1976-11-01), Thompson
patent: 4082247 (1978-04-01), Dalton
patent: 4258748 (1981-03-01), Guman
patent: 4448148 (1984-05-01), Gain, Jr.
patent: 4497340 (1985-02-01), Gain, Jr.
patent: 4629157 (1986-12-01), Tsuchiya et al.
patent: 4776363 (1988-10-01), Avelli
patent: 4834137 (1989-05-01), Kawaguchi et al.
patent: 4895345 (1990-01-01), Gladbach et al.
patent: 4901977 (1990-02-01), Hendrick
patent: 5572905 (1996-11-01), Cook, Jr.
patent: 1093154 (1960-11-01), None
patent: 1902948 (1970-07-01), None
patent: 2548754 (1985-01-01), None
Birch & Stewart Kolasch & Birch, LLP
Keasel Eric
Shaver Kevin
LandOfFree
Device for adjusting/closing the valve of a gas bottle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for adjusting/closing the valve of a gas bottle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for adjusting/closing the valve of a gas bottle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2553649