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US3905679A Expired / Lapsed US ⏱️ 0.0 years remaining

Reflector plate

Assignee: ERWINSICK OPTIK ELEKTRONIK
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Filing: 1974-01-10
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Granted: 1975-09-16
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Expires: 1994-01-10
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Abstract

Abstract A reflector plate of transparent thermoplastic material having a planar surface designed to face the reflecting light source and a second surface having triple reflectors uniformly distributed and closely juxtaposed with the surface having the triple reflectors, characterized by the presence of a plurality of feet projecting above the tips of the triple reflectors.

Inventors

  • 👤 Erwin Langenbach

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 20:25
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/12; G02B5/122; G02B5/124

Claims Analysis

Total Claims: 24
Claim 1
Independent Claim 66 words
Reflector plate of thermoplastic transparent material whose surface facing the reflecting light is planar and whose other surface has triple reflectors uniformly distributed and closely juxtaposed according to a regular pattern wherein the improvement comprises providing in at least part of the triple reflectors a plurality of feet arranged at spaced points of the triple pattern and projecting above the tips of the triple reflector thereof.
Claim 2
Dependent Claim 66 words
Reflector plate of thermoplastic transparent material whose surface facing the reflecting light is planar and whose other surface has triple reflectors uniformly distributed and closely juxtaposed according to a regular pattern wherein the improvement comprises providing in at least part of the triple reflectors a plurality of feet arranged at spaced points of the triple pattern and projecting above the tips of the triple reflector thereof.
Claim 3
Dependent Claim 18 words
Reflector plate as claimed in claim 1, wherein the feet are provided on the sides of the pattern.
Claim 4
Dependent Claim 22 words
Reflector plate as claimed in claim 2, wherein the feet are arranged with a uniform spacing on the sides of the pattern.
Claim 5
Dependent Claim 25 words
Reflector plate as claimed in claim 1, wherein the feet are provided on the sides where there are smooth edges protruding above the triple area.
Claim 6
Dependent Claim 15 words
Reflector plate as claimed in claim 1, wherein the feet are also extruded during manufacture.
Claim 7
Dependent Claim 29 words
Reflector plate as claimed in claim 1, wherein the in plan view hexagonal triple reflectors with two facing sides are located parallel to the sides of the overall pattern.
Claim 8
Dependent Claim 33 words
Reflector plate as claimed in claim 6, wherein the sides of the overall pattern coincide alternately with one hexagonal side of one triple reflector and the central axis of the next triple reflector.
Claim 9
Dependent Claim 32 words
Reflector plate as claimed in claim 7, wherein the feet have the cross-section of an equilateral triangle being located in each case in one of the triangular zones on the pattern sides.
Claim 10
Dependent Claim 15 words
Reflector plate as claimed in claim 1, wherein the ends of the feet are flat.
Claim 11
Dependent Claim 18 words
Reflector plate as claimed in claim 1, wherein the feet protrude more than 0.5 mm above the tips.
Claim 12
Dependent Claim 43 words
Reflector plate as claimed in claim 1, wherein it comprises hexagonal partial plates, whereby the edges of the partial plates run along the sides of the hexagonal triple reflector and the feet are provided exclusively in the bisected hexagon formed by the cut.
Claim 13
Dependent Claim 60 words
Reflector plate as claimed in claim 1, wherein it comprises rectangular partial plates, whereby one edge of the partial plates runs along the sides of the hexagonal triple reflectors and the other which is at right angles thereto runs along the tips of the hexagons and the feet are provided only in the bisected hexagons present on the first edge.
Claim 14
Dependent Claim 21 words
Reflector plate as claimed in claim 12, wherein in section the triple reflectors have a sawtooth shape along the first edge.
Claim 15
Dependent Claim 20 words
Reflector plate as claimed in claim 12, wherein the flat isosceles triangles remaining at the second edge are cut out.
Claim 16
Dependent Claim 20 words
Reflector plate as claimed in 12, wherein the partial plates and the feet are mounted on a common support plate.
Claim 17
Dependent Claim 29 words
Reflector plate as claimed in claim 15, wherein from the opposite side a glass plate is placed against the partial plates and the overall arrangement is secured in place.
Claim 18
Dependent Claim 21 words
Reflector plate as claimed in claim 16, wherein the aluminium support plate is placed in a housing on a rubber buffer.
Claim 19
Dependent Claim 44 words
Reflector plate as claimed in claim 16, wherein all the partial plates are positioned level with a step which passes round the inside of the housing and which is covered by a shapable casting compound up to the outer edge of the partial plates.
Claim 20
Dependent Claim 30 words
Reflector plate as claimed in claim 18, wherein the casting compound projects slightly above the planar surface of the partial plates and therefore rests tightly against the glass plate. Pg,16
Claim 21
Dependent Claim 71 words
Hexagonal partial reflector plate of thermoplastic transparent material whose surface facing the reflecting light is planar and whose other surface has hexagonal triple reflectors uniformly distributed and closely juxtaposed according to a regular pattern wherein the improvement comprises cutting the edges of the partial plate along the side of the hexagonal triple reflector, said improvement further comprising a plurality of feet spaced exclusively in the bisected hexagon formed by the cut.
Claim 22
Dependent Claim 71 words
Hexagonal partial reflector plate of thermoplastic transparent material whose surface facing the reflecting light is planar and whose other surface has hexagonal triple reflectors uniformly distributed and closely juxtaposed according to a regular pattern wherein the improvement comprises cutting the edges of the partial plate along the side of the hexagonal triple reflector, said improvement further comprising a plurality of feet spaced exclusively in the bisected hexagon formed by the cut.
Claim 23
Dependent Claim 91 words
Rectangular partial plate of thermoplastic transparent material whose surface facing the reflecting light is planar and whose other surface has hexagonal triple reflectors uniformly distributed and closely juxtaposed according to a regular pattern wherein the improvement comprises having a first edge of the partial plate running along the side of the hexagonal triple reflector, and the other edge, which is at right angles thereto, running along a tip of the hexagon, said improvement further comprising a plurality of feet spaced exclusively in the bisected hexagon and present on said first edge.
Claim 24
Dependent Claim 91 words
Rectangular partial plate of thermoplastic transparent material whose surface facing the reflecting light is planar and whose other surface has hexagonal triple reflectors uniformly distributed and closely juxtaposed according to a regular pattern wherein the improvement comprises having a first edge of the partial plate running along the side of the hexagonal triple reflector, and the other edge, which is at right angles thereto, running along a tip of the hexagon, said improvement further comprising a plurality of feet spaced exclusively in the bisected hexagon and present on said first edge.

References Cited (Backward Citations)

US2037773A Cited
US3359671A Cited
US3417959A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-09-15 1979-03-17 1979-09-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-09-15 1983-03-17 1983-09-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-09-15 1987-03-17 1987-09-16 $7700.00 Window Closed / Lapsed

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