Glass manufacturing – Processes – Self-supporting particle making
Patent
1981-09-18
1982-08-17
Lindsay, Jr., Robert L.
Glass manufacturing
Processes
Self-supporting particle making
65 22, 65142, 264 5, 264 9, 425 6, C03B 1910
Patent
active
043447872
ABSTRACT:
A system is described for forming hollow spheres containing pressured gas, which includes a cylinder device (14) containing a molten solid material (20) and having a first nozzle (18) at its end, and a second gas nozzle (24) lying slightly upstream from the tip of the first nozzle and connected to a source (26) that applies pressured filler gas that is to fill the hollow spheres. High pressure is applied to the molten metal, as by moving a piston (22) within the cylinder device, to force the molten material out of the first nozzle and the same time pressured gas fills the center of the extruded hollow liquid pipe that breaks into hollow spheres (12a). The environment (54) outside the nozzles contains gas at a high pressure such as 100 atmospheres, the gas is supplied to the gas nozzle (24) at a slightly higher pressure such as 101 atmospheres, and the pressure applied to the molten material (20) is at a still higher pressure such as 110 atmospheres.
REFERENCES:
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patent: 3151966 (1964-10-01), Slayter
patent: 3248464 (1966-04-01), Telkes
patent: 3325341 (1967-06-01), Shannon
patent: 3532480 (1970-10-01), D'Eustachio
patent: 4038063 (1977-07-01), Williams et al.
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patent: 4303431 (1981-12-01), Torobin
patent: 4303432 (1981-12-01), Torobin
Beggs James M. Administrator of the National Aeronautics and Space
Elleman Daniel D.
Wang Taylor G.
Jones Thomas H.
Lindsay, Jr. Robert L.
Manning John R.
McCaul Paul F.
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