Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Patent
1992-09-30
1997-09-02
Bonner, Melissa
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
4285428, 4285422, C03C 376, C03C 3076
Patent
active
056631103
ABSTRACT:
A hexagonal pyramid shape silicate glass form having top and bottom surfaces wherein the distance between opposite corners at the bottom surface is in the range of 11/16 to 11/2". The slope of the pyramidal sides of the silicate glass form ranges from 23.degree. to 30.degree. off the vertical sloping from a larger bottom surface to a smaller top surface. The height of the silicate glass form is between 5/8" and 11/8". This form is very stable with a minimum of internal stresses. In this way, the dusting of the particle is reduced.
REFERENCES:
patent: D225844 (1973-01-01), Lazet
patent: 3769509 (1973-10-01), Martone et al.
patent: 3811853 (1974-05-01), Bartholomew et al.
patent: 3824106 (1974-07-01), Adams et al.
patent: 3840359 (1974-10-01), Lazet
patent: 4076383 (1978-02-01), Heasley
patent: 4083728 (1978-04-01), Orso et al.
patent: 4906508 (1990-03-01), Blankenburg et al.
"Increasing the Strength (of Glass) by Tempering," Handbook of Glass Manufacture, vol. II, 1974, Section 14, Article 12, pp. 801 and 819.
Bonner Melissa
Donatiello Guy T.
Posner Ernest G.
PQ Corporation
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