Glass manufacturing – Processes – With chemically reactive treatment of glass preform
Patent
1989-04-25
1990-03-27
Kellogg, Arthur
Glass manufacturing
Processes
With chemically reactive treatment of glass preform
65 3013, C03C 1502
Patent
active
049117432
ABSTRACT:
A method of producing a superior quality of glass or other brittle material. The resulting end product is substantially stronger than conventional glass and exhibits greater strength consistency than was previously known. The techniques include various combinations of operations including substantially reducing the thickness of a blank of raw material; preparing formed edges including chamfered edges, rounded edges, and undercut edges; super polishing all edges and surfaces of a glass item; tempering the glass either thermally, chemically, or both; super polishing again after the tempering operation; and etching the glass after one or more of several steps in the process.
REFERENCES:
patent: 51776 (1865-12-01), Buckley
patent: 2398708 (1946-04-01), Hendrix
patent: 3843472 (1974-10-01), Toussaint et al.
patent: 3951634 (1976-04-01), Hall et al.
patent: 4033743 (1977-07-01), Scott, Jr. et al.
patent: 4486213 (1984-12-01), Lentz et al.
Strength and Strengthening of Glass Part One (concluded) Strength of Glass, Fred M. Ernsberger, "The Glass Industry", Sep. 1966, pp. 481-487.
Denson-Low Wanda K.
Hughes Aircraft Company
Kellogg Arthur
Streeter William J.
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