Pressure operated valve

Details Pressure operated valve Pressure operated valve

1976-07-06

1978-06-27

Michalsky, Gerald A.

Rotary kinetic fluid motors or pumps

With control means responsive to non-cyclic condition...

Temperature or fluid force responsive member

91446, 137466, 251 35, 251 43, F01D 1700, G05D 1610, F16K 3112

Patent

active

040971848

ABSTRACT:
A pressure operated shut-off valve for controlling a pneumatic circuit for instance a supply passage of a pneumatic tool, in response to the motive air supply pressure. The valve comprises a valve body that is continuously biased in its closing direction by a spring means and in its opening diection by the motive air supply pressure. If the air pressure drops below a predetermined minimum value the valve is automatically shifted to a closed position by the load of the spring means. A valve body controlled passage means supplies pressure air to the rear end of the valve body as the latter occupies its closed position, thereby making the closed position stable.

REFERENCES:
patent: 676144 (1901-06-01), Martin
patent: 880030 (1908-02-01), Leavitt
patent: 2055576 (1936-09-01), Hollerith
patent: 2229893 (1941-01-01), Hubka
patent: 3529622 (1970-09-01), Weise et al.

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