Fluid handling – Processes – Involving pressure control
Patent
1993-03-18
1994-05-24
Chambers, A. Michael
Fluid handling
Processes
Involving pressure control
137383, 1373842, 137458, F17D 106, F16K 3500
Patent
active
053139755
ABSTRACT:
A propane gas distribution system according to the present invention substantially enhances safety by providing a gas lockout device within the enclosure containing the distribution lines to the propane appliances for closing off a gas distribution line in response to either a sensed low pressure level or a sensed high pressure level. The closure member within the lockout device is biased closed, but is normally prevented from closing by a stop member which in turn is held in position until the unsafe low pressure or unsafe high pressure condition exists. A security control member is utilized for restricting the re-opening of the lockout device to select personnel, which typically would be a propane company representative. According to the method of the present invention, gas from the high pressure source is regulated and output to a low pressure gas distribution line. The gas pressure within the distribution line is sensed, and the gas line is automatically closed in response to a sensed low pressure level or a high sensed high pressure level. The gas distribution line is normally prevented from closing when gas pressure is above the low pressure level and below the high pressure level.
REFERENCES:
patent: 3166084 (1965-01-01), Handley
patent: 3587628 (1971-06-01), Farrer
patent: 3971410 (1976-07-01), St. Clair
patent: 4491149 (1985-01-01), Trinkwalder
Chambers A. Michael
Precision General Inc.
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