Patent US3840731A successfully refreshed from Google Patents.
US3840731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fog light for motor vehicles
Assignee: Daimler Benz AG
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Filing: 1971-07-19
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Granted: 1974-10-08
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Expires: 1991-07-19
Abstract
Abstract An installation for the better recognition under foggy weather conditions of objects in the light of motor vehicle fog lights, in which the fog lights radiate polarized light and an analyzer is arranged in front of the eyes of the drive which permits the passage of only certain parts of the polarized light.
Inventors
- 👤 H Saufferer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:22
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/28; G02B27/281; B; B60; B60J; B60J3/00; B60J3/06; F; F21; F21S; F21S41/00; F21S41/10; F21S41/12; F21S41/135
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
172 words
A lighting and observation installation for a motor vehicle which improves vehicle driver visibility during foggy weather conditions; said installation comprising: motor vehicle fog lights having means for radiating polarized light over an area in front of a motor vehicle which supports said fog lights, and analyzer means positioned on said vehicle in a position interposed between a portion of the vehicle occupied by the eyes of a vehicle driver and said area in front of the motor vehicle, said analyzer means including means for controlling the relative amount of light reflected from objects in said area and from fog droplets in said area which reaches the driver''s eyes, wherein said analyzer means is mounted for rotatable movement in its plane to accommodate adjustment of the analyzer means by the driver so that the relative amounts of light reflected from objects and fog droplets can be readily varied by the driver for varying fog and road conditions to optomize the difference between the light reflected from the objects and the fog droplets.
Claim 2
Dependent Claim
172 words
A lighting and observation installation for a motor vehicle which improves vehicle driver visibility during foggy weather conditions; said installation comprising: motor vehicle fog lights having means for radiating polarized light over an area in front of a motor vehicle which supports said fog lights, and analyzer means positioned on said vehicle in a position interposed between a portion of the vehicle occupied by the eyes of a vehicle driver and said area in front of the motor vehicle, said analyzer means including means for controlling the relative amount of light reflected from objects in said area and from fog droplets in said area which reaches the driver''s eyes, wherein said analyzer means is mounted for rotatable movement in its plane to accommodate adjustment of the analyzer means by the driver so that the relative amounts of light reflected from objects and fog droplets can be readily varied by the driver for varying fog and road conditions to optomize the difference between the light reflected from the objects and the fog droplets.
Claim 3
Dependent Claim
24 words
An installation according to claim 1, characterized in that the analyzer means is constituted by a disk located adjacent the windshield of the vehicle.
Claim 4
Dependent Claim
14 words
An installation according to claim 2, characterized in that said disk is removably arranged.
Claim 5
Dependent Claim
18 words
An installation according to claim 3, characterized in that said disk is arranged in front of the windshield.
Claim 6
Dependent Claim
16 words
An installation according to claim 3, characterized in that said disk is arranged behind the windshield.
Claim 7
Dependent Claim
20 words
An installation according to claim 1, characterized in that said analyzer means is constituted by eye glasses for the driver.
Claim 8
Dependent Claim
16 words
An installation according to claim 1, characterized in that the fog light radiates linearly polarized light.
Claim 9
Dependent Claim
16 words
An installation according to claim 1, characterized in that the fog light radiates circularly polarized light.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |