Method of forming conoid surfaces

Details Method of forming conoid surfaces Method of forming conoid surfaces

1976-12-06

1980-08-12

Kellogg, Arthur D.

Glass manufacturing

Processes

Forming product or preform from molten glass

65302, 264298, 264311, C03B 1904

Patent

active

042171245

ABSTRACT:
Conoid surfaces can be generated by rotation of a material at different angles and under differing constraints. An axis of 45.degree. can produce hyperboloids; with perpendicular axes, concentric spheres can be produced; magnetic fields can be used to shape the lenses; and multielement lenses can be produced with special chambers.

REFERENCES:
patent: 793299 (1905-06-01), Jewett
patent: 2972782 (1961-02-01), Archibald
patent: 3691263 (1972-09-01), Stoy et al.
patent: 3838964 (1974-10-01), Hake

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