Patent US4905133A successfully refreshed from Google Patents.
US4905133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp reflector
Assignee: BLAZER INTERNATIONAL A CORP OF
•
Filing: 1989-08-18
•
Granted: 1990-02-27
•
Expires: 2009-08-18
Abstract
Abstract A fog lamp reflector includes a reflector body having a reflector surface made up of a series of paraboloid strips arranged side by side along a lateral direction. Each of the strips defines a respective focus, and all of the focuses coincide at a selected point in space. The strips are aimed at multiple converging directions to laterally disperse reflected light originating at the selected point, and each of the strips defines a respective focal length. The focal lengths of strips progressively farther from the center are progressively greater. The focuses are selected such that adjacent strips are matched in position and the reflector surface is substantially continuous. The reflector surface has a second derivative of lateral displacement with respect to axial displacement which is substantially continuous throughout the reflector surface to provide a visually smooth appearance.
Inventors
- 👤 Mark J. Mayer
- 👤 Charles D. Lemme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:07
CPC Classifications
F; F21; F21S; F21S41/00; F21S41/30; F21S41/32; F21S41/323; F21S41/37; F21V; F21V7/00; F21V7/22; F21V7/24; F21V7/28
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
169 words
A lamp reflector comprising: a reflector body which defines a reflector surface comprising a series of paraboloid strips arranged side by side along a lateral direction, said series comprising a central paraboloid strip; wherein each of the paraboloid strips defines a respective focus and all of the focuses substantially coincide at selected point in space; wherein the paraboloid strips are aimed in a plurality of non-parallel directions to laterally disperse reflected light originating at the selected point in space; wherein each of the paraboloid strips defines a respective focal length and the focal lengths of paraboloid strips progressively farther from the central paraboloid strip are progressively greater; and wherein the focuses are selected such that adjacent paraboloid strips are matched in position such that the reflector surface is substantially continuous; said reflector body defining a region extending over at least one quadrant, wherein the second derivative of lateral displacement with respect to axial displacement is substantially continuous throughout the region to provide a visually smooth appearance to the region.
Claim 2
Dependent Claim
169 words
A lamp reflector comprising: a reflector body which defines a reflector surface comprising a series of paraboloid strips arranged side by side along a lateral direction, said series comprising a central paraboloid strip; wherein each of the paraboloid strips defines a respective focus and all of the focuses substantially coincide at selected point in space; wherein the paraboloid strips are aimed in a plurality of non-parallel directions to laterally disperse reflected light originating at the selected point in space; wherein each of the paraboloid strips defines a respective focal length and the focal lengths of paraboloid strips progressively farther from the central paraboloid strip are progressively greater; and wherein the focuses are selected such that adjacent paraboloid strips are matched in position such that the reflector surface is substantially continuous; said reflector body defining a region extending over at least one quadrant, wherein the second derivative of lateral displacement with respect to axial displacement is substantially continuous throughout the region to provide a visually smooth appearance to the region.
Claim 3
Dependent Claim
12 words
The invention of claim 1 wherein the reflector body is substantially circular.
Claim 4
Dependent Claim
20 words
The invention of claim 1 wherein each of the paraboloid strips defines a width no greater than about 1 mm.
Claim 5
Dependent Claim
67 words
The invention of claim 1 wherein the plurality of paraboloid strips on one side of the central paraboloid strip comprises six equally spaced paraboloid strips S0-S5, each having a respective focal length F0-F5, wherein S0 is the central strip and S5 is the outermost strip, and wherein the five focal lengths F1-F5 are in substantially the following ratios with respect to F0: F1/F0=1.01; F2/F0=1.02; F3/F0=1.04; F4/F0=1.07; F5/F0=1.08.
Claim 6
Dependent Claim
38 words
The invention of claim 4 wherein the plurality of strips comprises a plurality of additional strips interspersed between S0 and S1, between S1 and S2, between S2 and S3, between S3 and S4, and between S4 and S5.
Claim 7
Dependent Claim
78 words
The invention of claim 1 wherein the plurality of paraboloid strips on one side of the central paraboloid strip comprises six equally spaced paraboloid strips S0-S5, wherein S0 is the central strip and S5 is the outermost strip, and wherein the strips S0-S5 are aimed at substantially the following angles θ S0 -θ S5 with respect to a central axis: θ S0 =0°; θ S1 =5°; θ S2 =9°; θ S3 =13°; θ S4 =15°; θ S5 =16°.
Claim 8
Dependent Claim
38 words
The invention of claim 6 wherein the plurality of strips comprises a plurality of additional strips interspersed between S0 and S1, between S1 and S2, between S2 and S3, between S3 and S4, and between S4 and S5.
Claim 9
Dependent Claim
44 words
The invention of claim 6 wherein the strips S0-S5 are aimed at substantially the following angles θ S0 -θ S5 with respect to a central axis: θ S0 =0°; θ S1 =5°; θ S2 =9°; θ S3 =13°; θ S4 =15°; θ S5 =16°.
References Cited (Backward Citations)
FR348329A
Cited
US1639363A
Cited
GB269671A
Cited
US1814326A
Cited
US2274405A
Cited
US2806134A
Cited
US3337871A
Cited
US3758770A
Cited
US4028542A
Cited
US4149227A
Cited
US4293900A
Cited
US4447865A
Cited
US4494176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-26 | 1993-08-28 | 1994-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-26 | 1997-08-28 | 1998-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-26 | 2001-08-28 | 2002-02-27 | $7700.00 | Window Closed / Lapsed |