F - Mech Eng,Light,Heat,Weapons – 17 – D
Patent
F - Mech Eng,Light,Heat,Weapons
17
D
F17D 1/04 (2006.01) F17C 13/12 (2006.01)
Patent
CA 2118949
GAS LOCKOUT SYSTEM ABSTRACT OF THE DISCLOSURE 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.
Finlayson & Singlehurst
Pgi International Ltd.
LandOfFree
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