Gas-pressure regulator

Details Gas-pressure regulator Gas-pressure regulator

2001-07-09

2003-01-14

Hepperle, Stephen M. (Department: 3753)

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

C137S315050, C137S315370

Reexamination Certificate

active

06505640

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a gas-pressure regulator and, more particularly, to a gas-pressure regulator that has a control lever integrally formed with a pair of laterally extending pins and which is easy to be assembled.
BACKGROUND OF THE INVENTION
A gas-pressure regulator is used to maintain the optimum pressure of a flow of gas into a gas burner for combustion.
As illustrated in
FIGS. 5
to
8
, a conventional gas-pressure regulator typically includes a body (
60
) formed with a gas inlet (
61
) and a gas outlet (
62
). In the body (
60
), there are a pair of parallel protrusions (
601
), each defining a recess (
602
) and a threaded hole (
603
) in the top surface thereof.
A control lever (
63
) is pivotally connected to the protrusions (
601
), by means of a pin (
604
) extending through the lever (
63
) with the ends of the pin (
604
) placed in the recesses (
602
) and retained therein by the heads of screws (
605
) which are screwes into the threaded holes (
603
) of the protrusions (
601
).
The control lever (
63
) has a disk (
632
) fastened to the end thereof by a rivet (
631
), in order to block the gas inlet (
61
) when the pressure of the gas within the regulator becomes higher than a default value. The opposite end of the control lever (
13
) is connected to a lifting rod (
64
) extending downward from a diaphragm (
65
) which closes the open top of the hollow body (
60
).
The remaining parts of the gas-pressure regulator above the diaphragm (
65
) involves a metal disk (
66
) atop the diaphragm (
65
), an inner spring (
67
) and on outer spring (
68
) abutting the metal disk (
66
), and a bonnet (
70
) covering the hollow body (
60
).
The bonnet (
70
) defines a threaded hole (
71
) for receiving a pressure
4
adjusting member (
72
) that presses the outer spring (
68
) against the metal disk (
66
). The member (
72
) has a threaded periphery (
73
) to threadingly engaged with the threaded hole (
71
) of the bonnet (
70
), and a top slot (
42
) to facilitate tightening and loosening thereof.
Additionally, a cap (
75
) is threadingly engaged with the threaded hole (
71
) of the bonnet (
70
) to shield the pressure-adjusting member (
72
).
In this conventional gas-pressure regulator, however, the control lever (
63
) and the pin (
604
) are made separately, and the disk (
632
) is required to be riveted to the control lever (
63
). Moreover, it is inconvenient that the pin (
604
) must extend through the control lever (
63
) during assembly.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a gas-pressure regulator that has a control lever integrally formed with a pair of laterally extending pins.
Another object of the present invention is to provide a gas-pressure regulator that is easy to assemble.


REFERENCES:
patent: 5174331 (1992-12-01), Steudler, Jr.
patent: 5456281 (1995-10-01), Teay
patent: 5735306 (1998-04-01), Olds et al.

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