US4020457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Installation for increasing the brightness differences in combined motor vehicle lights
Assignee: Daimler Benz AG
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Filing: 1975-09-22
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Granted: 1977-04-26
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Expires: 1995-09-22
Abstract
Abstract An installation is provided for increasing the difference in brightness between a pair of lights forming part of a combination light unit, particularly a unit including blinker and position lights for use in motor vehicles, so as to render the lights more easily distinguishable.In a system where a first and a second light are adapted to be switched on and off separately and are arranged in a common housing or in direct proximity of one another, a control element is provided whereby the first light is automatically turned off when the second light is turned on and is again automatically turned on when the second light is turned off.
Inventors
- 👤 Klaus Neuffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:00
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/2603
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
119 words
An installation for controlling lights to render the lights more distinctly visible comprising a pair of light means each including first and second lights, a source of energizing voltage, first means for selectively connecting the first light of each of said pair of light means to said source of energizing voltage, a source of periodic voltage pulses, second means for selectively connecting one of said second lights of said pair of light means to said source of periodic voltage, and control means responsive to connection of one of said second lights to said source of periodic voltage for disconnecting only the first light of the same light means from said source of energizing voltage independently of said first means.
Claim 2
Dependent Claim
119 words
An installation for controlling lights to render the lights more distinctly visible comprising a pair of light means each including first and second lights, a source of energizing voltage, first means for selectively connecting the first light of each of said pair of light means to said source of energizing voltage, a source of periodic voltage pulses, second means for selectively connecting one of said second lights of said pair of light means to said source of periodic voltage, and control means responsive to connection of one of said second lights to said source of periodic voltage for disconnecting only the first light of the same light means from said source of energizing voltage independently of said first means.
Claim 3
Dependent Claim
40 words
An installation according to claim 1, characterized in that the second light of each of said light means is a turn indicator light and the first light of each of said light means is a position-light in a motor vehicle.
Claim 4
Dependent Claim
24 words
An installation according to claim 2, characterized in that the first and second lights in each light means are accommodated in a common housing.
Claim 5
Dependent Claim
26 words
An installation according to claim 2, characterized in that the first and second lights in each light means are arranged in direct proximity of one another.
Claim 6
Dependent Claim
81 words
An installation as defined in claim 1 wherein said control means comprises a pair of relays respectively connected to said pair of light means, each relay including a relay switch and a relay coil for operating said switch upon application of a voltage thereto, said relay coil being connected to said second light so as to be energized and said relay switch being connected to said first light to deenergize said first light upon energization of the relay coil associated therewith.
Claim 7
Dependent Claim
29 words
An installation according to claim 5, characterized in that the first and second lights of each of said light means are formed by a single lamp having two filaments.
Claim 8
Dependent Claim
26 words
An installation according to claim 5, characterized in that the first and second lights of each of said light means are accommodated in a common housing.
Claim 9
Dependent Claim
28 words
An installation according to claim 5, characterized in that the first and second lights of each of said light means are arranged in direct proximity of one another.
References Cited (Backward Citations)
US2321803A
Cited
US3896415A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |