US4670818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projection headlight for motor vehicles
Assignee: Dr Ing HCF Porsche AG
•
Filing: 1985-09-17
•
Granted: 1987-06-02
•
Expires: 2005-09-17
Abstract
Abstract A projection headlight is provided for a motor vehicle wherein a projection lens is encased by a disk-shaped covering having a size larger than the surface area of the lens. A light passage area is provided in the covering and portion of the covering outside the light passage area is provided with a colored coating. The colored coating exhibits variations in light transmitting properties across the surface of the coated portion of the covering. The resulting headlight has a conventional size and the function of the lens is unimpaired.
Inventors
- 👤 Wolfgang Moebius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:28
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/02; B60Q1/04; B60Q1/0408; B60Q1/0458; B60Q1/0029; B60Q1/0035; B60Q1/0466; F; F21; F21S; F21S41/00; F21S41/20; F21S41/28; F21V; F21V3/00; F21V3/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
121 words
A projection headlight for a motor vehicle comprising: projection light source means, projection lens means for producing a directed beam of light from said light source means, said lens means having a first surface area, and covering means for encasing the lens means, said covering means having a second surface area, said second surface area being greater than said first surface area, said covering means including a light passage area and an area exhibiting a colored coating, wherein said coating exhibits non-constant light transmission properties along a surface of said covering means, and wherein said covering means exhibits a greater light transmitting property at a front portion of said covering means that at a more rearward portion of said covering means.
Claim 2
Dependent Claim
121 words
A projection headlight for a motor vehicle comprising: projection light source means, projection lens means for producing a directed beam of light from said light source means, said lens means having a first surface area, and covering means for encasing the lens means, said covering means having a second surface area, said second surface area being greater than said first surface area, said covering means including a light passage area and an area exhibiting a colored coating, wherein said coating exhibits non-constant light transmission properties along a surface of said covering means, and wherein said covering means exhibits a greater light transmitting property at a front portion of said covering means that at a more rearward portion of said covering means.
Claim 3
Dependent Claim
14 words
Projection headlight according to claim 1, wherein said covering means comprises a disk-shaped covering.
Claim 4
Dependent Claim
15 words
A projection according to claim 1, wherein said light passage area has a rectangular shape.
Claim 5
Dependent Claim
17 words
A projection headlight according to claim 1, wherein said light passage area has a substantially circular shape.
Claim 6
Dependent Claim
16 words
A projection headlight according to claim 4, wherein said light passage area has an oval shape.
Claim 7
Dependent Claim
21 words
A projection headlight according to claim 5, wherein said light passage area is surrounded by at least one transparent oval ring.
Claim 8
Dependent Claim
20 words
A projection headlight according to claim 6, wherein said light passage area is surrounded by plurality of transparent oval rings.
Claim 9
Dependent Claim
15 words
A projection headlight according to claim 1, wherein said covering means has a concave shape.
Claim 10
Dependent Claim
15 words
A projection headlight according to claim 2, wherein said covering means has a concave shape.
Claim 11
Dependent Claim
30 words
A projection headlight according to claim 1, wherein said vehicle has a body exhibiting an outer contour adjacent said covering means, said covering means being flush with said outer contour.
Claim 12
Dependent Claim
30 words
A projection headlight according to claim 8, wherein said vehicle has a body exhibiting an outer contour adjacent said covering means, said covering means being flush with said outer contour.
Claim 13
Dependent Claim
38 words
A projection headlight according to claim 1, comprising housing means for housing said light source means and said lens means, said housing means and said covering means forming a unit removably engagable with an opening in said vehicle.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-01 | 1990-12-01 | 1991-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-01 | 1994-12-01 | 1995-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-01 | 1998-12-01 | 1999-06-02 | $7700.00 | Window Closed / Lapsed |