Elliptical mirror for vehicular use
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United States of America Patent
Stats
-
Mar 13, 1984
Grant Date -
N/A
app pub date -
Feb 5, 1981
filing date -
Feb 5, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mirror having a convex reflecting surface with a continuous peripheral edge is disclosed. The convex reflecting surface has an apex which extends a predetermined distance H from a plane defined by the peripheral edge. The convex reflecting surface at the continuous peripheral edge has an outer diameter D. The relationship of D/H is in the range of 2.5 to 3.0. The convex reflecting surface is also characterized by a seventh order, sixth degree equation or in the alternative a truncated elliptical surface with a minor axis at 3.72 inches from the origin and a major axis at 4.11 inches from the origin. The elliptical surface being truncated at a distance 0.72 inches from the origin. The mirror is mounted to a disc member with a threaded ball member mounted to the disc member. The threaded member is attached to brackets which are mounted to the vehicle behind the front bumper. The mirror permits the vehicle operator to see in front of, along the side of and behind the vehicle.
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