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US 4,035,681 AGranted
Polygonal lens
OwnerJohn M. Savage, Jr.inventor
Life of this patent
Estimating the term…
Abstract
A lens cap, for use with a light emitting diode, comprises: A. an end wall and a side wall defining a skirt integral with said end wall, B. the skirt being polygonal and defining interior corners, C. the skirt interior surface defining serrations extending lengthwise toward said end wall, and D. the skirt side wall thickness at the corners being substantially the same as the skirt side wall thickness between said corners.
Claims14
For combination with a light emitting diode, a lens cap comprising
- (a) an end wall and a side wall defining a skirt integral with said end wall,
- (b) the skirt being polygonal and defining interior corners,
- (c) the skirt interior surface defining serrations extending lengthwise toward said end wall, the serrations having roots,
- (d) the skirt side wall thickness at the corners being substantially the same as the skirt side wall thickness between said corners and at the serration roots, said corners being free of said serrations,
- (e) said end wall having an interior surface defining radially spaced serrations which extend circularly about an axis defined by the skirt, said end wall serrations extending as circular arcs having progressively diminishing length, proximate said corners.
2 more elements
For combination with a light emitting diode, a lens cap comprising
- (a) an end wall and a side wall defining skirt integral with said end wall,
- (b) the skirt defining interior corners,
- (c) the skirt interior surface defining serrations extending lengthwise toward said end wall, the serrations having roots,
- (d) the skirt side wall thickness at the corners being substantially the same as the skirt side wall thickness between said corners and the serration roots,
- (e) the skirt defining an axis and having generally rectangular cross sections in planes normal to said axis,
- (f) said skirt defining a flat at each interior corner, the skirt exterior surface being outwardly convex at each exterior corner to merge with skirt surfaces adjacent that corner, said flat interior corner facing said convex exterior corner, said flat interconnecting roots of serrations on successive wall portions, and
- (g) the end wall having an interior surface defining serrations which extend about said axis, said end wall serrations having diminished length proximate said corners.
4 more elements
Dependencies are inferred from the claim text.