US3177397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic headlight dimmer system
Assignee: Vapor Heating Corp
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Filing: 1960-06-06
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Granted: 1965-04-06
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Expires: 1980-06-06
Abstract
No abstract record available.
Inventors
- 👤 William C Keeran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:24
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/02; B60Q1/04; B60Q1/14; B60Q1/1415; B60Q1/1423; H; H05; H05B; H05B39/00; H05B39/04; H05B39/06; B60Q2300/00; B60Q2300/05; B60Q2300/052; B60Q2300/40; B60Q2300/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
APPARATUS FOR AUTOMATICALLY DIMMING VEHICLE HEADLIGHTS UPON THE APPROACH OF ANOTHER LIGHTED VEHICLE FROM THE OPPOSITE DIRECTION COMPRISING A LIGHT SENSITIVE ELEMENT HAVING AN EFFECTIVE LIGHT SENSITIVE AREA IN THE SHAPE OF A NARROW STRIP, THE LONGITUDINAL AXIS OF SAID STRIP BEING DISPOSED IN A HORIZONTAL PLANE, AND MEANS MOUNTED ADJACENT SAID ELEMENT FOR COLLECTING LIGHT FROM SAID APPROACHING VEHICLE AND DIRECTING IT ON SAID AREA IN A RECTANGULAR LIGHT PATTERN HAVING ITS LONGITUDINAL AXIA PARALLEL WITH THE LONGITUDINAL AXIS OF SAID STRIP.
Claim 2
Dependent Claim
83 words
APPARATUS FOR AUTOMATICALLY DIMMING VEHICLE HEADLIGHTS UPON THE APPROACH OF ANOTHER LIGHTED VEHICLE FROM THE OPPOSITE DIRECTION COMPRISING A LIGHT SENSITIVE ELEMENT HAVING AN EFFECTIVE LIGHT SENSITIVE AREA IN THE SHAPE OF A NARROW STRIP, THE LONGITUDINAL AXIS OF SAID STRIP BEING DISPOSED IN A HORIZONTAL PLANE, AND MEANS MOUNTED ADJACENT SAID ELEMENT FOR COLLECTING LIGHT FROM SAID APPROACHING VEHICLE AND DIRECTING IT ON SAID AREA IN A RECTANGULAR LIGHT PATTERN HAVING ITS LONGITUDINAL AXIA PARALLEL WITH THE LONGITUDINAL AXIS OF SAID STRIP.
References Cited (Backward Citations)
US2367816A
Cited
US2506625A
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US2831394A
Cited
US2795736A
Cited
US2786964A
Cited
US2786963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |