Fluid handling – Systems – Programmer or timer
Patent
1987-01-22
1988-11-29
Cohan, Alan
Fluid handling
Systems
Programmer or timer
13750547, 137495, 137460, 137613, F16K 3148
Patent
active
047874163
ABSTRACT:
A regulator means for automatically shutting off gas flow in a pipeline during pressure reducing failure is provided. The regulator means includes a body member, a pressure reducing valve assembly, a switching valve assembly, a timing device for a predetermined time period of gas flow, a transmission plate for controlling switching valve assembly by the timing device, and an automatic overflow control assembly. The body member is provided with a pressure reducing valve chamber, a timing device chamber and a thin wall located between the pressure reducing valve chamber and the timing device chamber. The timing device chamber receives the timing device, and the pressure reducing valve chamber receives the pressure reducing valve assembly. The switching valve assembly is arranged at the outlet port of the gas flow passage. The switching valve assembly consists of a spindle, a leakage-proof seal ring, and a spiral spring. The transmission plate can control the left and right displacements of the spindle of the switching valve assembly to make the switching valve carry out the opening and closing functions and can signal the user to learn the occurrence of a pressure reducing failure. An up-stream automatic gas leakage over flow control assembly is located at the inlet port of the body member. The automatic gas leakage overflow control assembly consists of a steel bead for blocking gas passage automatically and a release button. During gas leaking and overflowing, the steel bead automatically blocks the gas flow through the pipeline. When the user wants to resume gas flow, he passes down the release button displacing the steel bead from its blockage position, and then the gas flow in the pipeline is restored.
REFERENCES:
patent: 3180356 (1965-04-01), Galley
patent: 3228417 (1966-01-01), Schwerter
patent: 3424194 (1969-01-01), Krugan
patent: 3542052 (1970-11-01), Irwin
patent: 3623506 (1971-11-01), Bonner
patent: 4223692 (1980-09-01), Perry
patent: 4265270 (1981-05-01), Satoh
Bloom Leonard
Cohan Alan
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