Patent
1986-12-22
1988-03-15
Henry, Jon W.
350636, G02B 510, B60R 108
Patent
active
047309148
ABSTRACT:
An elongate, arcuate mirror with generally convex surface portions is provided, particularly for school busses. One of the mirrors is preferably provided at each front corner of the school bus to enable the driver to have visual access to the area in front of the bus hood as well as to the sides of the bus. The mirror has a transparent sheet with a generally convex surface and a generally concave surface with the sheet having a reflective coating on the concave side. The sheet has a constant radius in a longitudinal direction of predetermined value throughout a central portion of the mirror with the central portion being about one-half the peripheral length of the mirror. The sheet has a constant radius of predetermined value in a transverse direction throughout the same central portion of the mirror which exceeds the value of the longitudinal radius. The ends of the sheet beyond the central portion have generally segmental spherical shapes with a radius about equal to the value of the fixed transverse radius. The mirror provides the viewer with a larger reflective view with substantially less distortion than mirrors heretofore known.
REFERENCES:
patent: 3901587 (1975-08-01), Haile
patent: 4436372 (1984-03-01), Schmidt et al.
Gutchess, Jr. Allen D.
Henry Jon W.
Safety Cross Mirror Co., Inc.
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