Valve

Details Valve Valve

1995-06-01

1998-02-03

Rivell, John

Fluid handling

Inflatable article

With cap

137227, 731468, 152415, F16K 1520

Patent

active

057133867

DESCRIPTION:

BRIEF SUMMARY
the present invention relates, as indicated in the title, to an improved valve of the type which incorporate a substantially cylindrical shape suitable for being fixed on a tire, presenting a threaded and having a valve core intended to carry out the opening and closing of the passage of the air.


BACKGROUND OF THE INVENTION

Generally, the valves of tires have an extractible cap which is externally fixed at the end of the same with the purpose of impeding the entrance of dirt in the zone where the valve core is placed, said cap presenting the drawback that each time it is desired to test the pressure of the tires, it is necessary to take off the cap, thus getting hands dirty in addition to the risk of loss of the cap due to the complete separation of the same from the valve when extracted.
In many vehicles these valves are place din cavities situated in hubcaps of tires which results in making difficult the removal of the cap of the tires or even more difficult connecting the air pressure supply mouthpiece on to them, such that in some vehicles it is indispensable to take off the hubcaps in order to be able to have access to the corresponding valve.


SUMMARY OF THE INVENTION

In order to overcome these problems, the improved valve, object of the invention, is herewith proposed, which has at an end thereof, a device with means for closing the passage of the air and for actuating of the valve core.
This valve has the advantageous feature that once an end device is placed on the valve it will not be necessary to take off the same for testing the pressure of the tire, eliminating in this manner, manual manipulation of elements as occurs in the case of valves with extractible cap.
The end device of the value is composed of a main body which is fixed on a threaded portion at an end of the valve presenting internally a stair-shaped cylindrical configuration wherein a rod is located which actuates with its head on an opening of the main body, due to the pushing effect of a spring mounted on the intermediate zone of the rod as well as on an interior platform of the main body respectively, in such a manner that the rod tends to maintain closed the mouth of the valve, and when it is axially displaced towards the rear zone of the valve, overcoming the pressure of the spring, pushes the rod of the valve core thus allowing the passage of air through the inside of the valve.
The improved valve, object of the invention, thus permits the end portion of the same to be always maintained in closed position, except when the mouthpiece of an air pressure supply is coupled thereto, which pressure forces the rod to be axially displaced towards the rear zone, the latter pushing a rod of the valve core thus performing the opening of the valve.
The device which is fixed at an end of the valve may be constituted by two independent bodies which can be coupled between each other, having inside and in an intermediate zone, the rod for the passage of air and the spring which maintains the latter in a normally closed position, said device being fixed on to the valve by means of an interior threaded zone of the latter which receives a rear zone of the device also threaded although externally in conformity with the mentioned threaded zone of the valve.
Advantageously the device which is fixed at an end of the valve may be constituted by a single body which is has inside a rod for the passage of air and the corresponding spring in order to maintain the rod in a normally closed position, said device being fixed on to the main valve by means of an exterior threaded zone of the latter which receives a rear zone of the device also threaded although internally in conformity with the mentioned threaded zone of the valve.
The latter constitution permits also for obtained an air-tight closure between the rod for the passage of air and the mouth of the device thus impeding the leakage of air due to a special structure of the head of the rod which carries and elastic toric joint that in a closed situation, i.e. in the absence of air pressure supply

REFERENCES:
patent: 1304116 (1919-05-01), Stephens
patent: 1678837 (1928-07-01), Whipple
patent: 1812610 (1931-06-01), Royer
patent: 1865231 (1932-05-01), Buck
patent: 1928069 (1933-09-01), Moore
patent: 1989994 (1935-02-01), Lear
patent: 2178828 (1939-11-01), Broecker
patent: 2233173 (1941-02-01), McCoy
patent: 2749931 (1956-06-01), Battin
patent: 3176706 (1965-04-01), Scramlin
patent: 3280879 (1966-10-01), Simms
patent: 3637002 (1972-01-01), Hughes
patent: 4072048 (1978-02-01), Arvan

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