Glass manufacturing – With means providing parting material
Patent
1998-03-17
2000-03-07
Vincent, Sean
Glass manufacturing
With means providing parting material
65168, 65170, 6537411, 6537412, 425 90, 425436R, 425469, C03B 4002, A01J 2100
Patent
active
060324902
ABSTRACT:
In a grindstone for fabricating a mold which has optical fiber engagement portions of an optical fiber guide block used for aligning optical fibers, two main grinding surfaces are provided to form the optical fiber engagement portions contacted with the sides of the optical fibers and a tip end portion which is contiguous to the two main grinding surfaces and which has a contour contained within a predetermined area. The predetermined area has a triangle shape which is defined by two tangent lines along the two main grinding surfaces and a preselected line drawn between two points determined on the two main grinding surfaces. The two points are decided in accordance with a predetermined formula.
REFERENCES:
patent: 5425118 (1995-06-01), Sugihara et al.
Shibata Gakuei
Yamashita Teruo
Yoshida Masahiro
Hoya Corporation
Vincent Sean
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