Composite article and method

Details Composite article and method Composite article and method

1991-03-04

1992-06-02

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

428116, 428118, 428119, 428325, 65 181, 65 183, 65 43, 501 4, 501 7, 501 8, 501 17, 501 18, 501 32, 501 69, B32B 500, B32B 700

Patent

active

051185520

ABSTRACT:
A composite article, such as a telescope mirror blank, comprising a solid glass body and a supporting network structure, the structure being composed of a network of interlocking struts frit sealed to one another and to the face plate. The article is characterized in that sufficient of the glass body is incorporated in particulate form in the struts to maintain an average expansion mismatch (-50.degree. C. to +50.degree. C.) between the network structure and the glass body of no more than 0.15 ppm/.degree.C.

REFERENCES:
patent: 2326059 (1943-08-01), Nordberg
patent: 3778242 (1973-12-01), Francel
patent: 3839001 (1974-10-01), Adams
patent: 4315991 (1982-02-01), Hagy
patent: 4547467 (1985-10-01), Barth
patent: 4755490 (1988-07-01), Dilazzaro
patent: 4849380 (1989-07-01), Sawhill
patent: 4883705 (1989-11-01), Kawakami
patent: 4917934 (1990-04-01), Sempolinski

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