Fluid handling – With indicator – register – recorder – alarm or inspection means – Position or extent of motion indicator
Patent
1984-08-16
1986-07-15
Chambers, A. Michael
Fluid handling
With indicator, register, recorder, alarm or inspection means
Position or extent of motion indicator
137557, 251 65, 251 75, 200 819M, F16K 3700
Patent
active
046000348
ABSTRACT:
This device is to be installed between the origin of a gas supply and a gas supply pipe on a gas utilizing tool. As a diaphragm moves up, due to the difference in atmospheric pressure inside a chamber of the device, a first magnet positioned on an elastic plate is moved up by the magnetic forces of mutual attraction from second magnets secured to a plate on the diaphragm. The first magnet is subject to moving out of the magnetic attraction force area by the repulsion of the magnets and the force of restitution of the elastic plate. The supply of gas is dependent on the opening of a valve mounted on the elastic plate. As the first magnet moves away from the plate on the diaphragm, the magnetic forces of the first magnet move a lead-switch to the "ON" state to indicate gas is flowing. In case of a large leakage of gas at the gas utilizing tool side of the device, the atmospheric pressure of the upper portion of the chamber is reduced, and the increased atmospheric pressure inside the lower portion of the chamber rapidly forces the diaphragm up and pulls up. A crosspiece of a U frame mounted on the plate on the diaphragm lifts the elastic plate and the valve to cause the shutting "OFF" of the supply of gas.
REFERENCES:
patent: 1875511 (1932-09-01), Shivers
patent: 2353740 (1944-07-01), Malone
patent: 3121552 (1964-02-01), Wilson
patent: 3199524 (1965-08-01), Mitchell
patent: 3522596 (1970-08-01), Fowler et al.
Chambers A. Michael
Il Kwang Co., Ltd.
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