US3553520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High intensity driving lamps particularly for road vehicles
Assignee: ZF International UK Ltd
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Filing: 1968-08-05
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Granted: 1971-01-05
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Expires: 1988-08-05
Abstract
Abstract A sealed beam lamp includes a reflector, having a lens secured thereto and defining therewith a sealed enclosure. A quartz iodine or equivalent high intensity bulb is located within said enclosure, and is carried by the reflector, and a light shield for preventing light from the bulb issuing from the lamp, without first being reflected from the reflector, is associated with the bulb.
Inventors
- 👤 Harris Vernon Hicks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:11
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/28; H01K1/34; H01K9/00; H01K9/08; Y; Y02; Y02B; Y02B20/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
83 words
A high intensity driving lamp comprising a reflector and a lens secured to the reflector around its periphery for defining a sealed enclosure therebetween, a quartz halogen bulb fixedly secured to the reflector within the enclosure, connecting leads for the bulb extending within the enclosure, said enclosure having an atmosphere which is nonoxidizing with respect to said connecting leads, and a light shield associated with the bulb for preventing light which has not first been reflected from the reflector issuing from the lamp.
Claim 2
Dependent Claim
83 words
A high intensity driving lamp comprising a reflector and a lens secured to the reflector around its periphery for defining a sealed enclosure therebetween, a quartz halogen bulb fixedly secured to the reflector within the enclosure, connecting leads for the bulb extending within the enclosure, said enclosure having an atmosphere which is nonoxidizing with respect to said connecting leads, and a light shield associated with the bulb for preventing light which has not first been reflected from the reflector issuing from the lamp.
Claim 3
Dependent Claim
31 words
The high intensity lamp as claimed in claim 1 in which said light shield is secured to the reflector and is engaged with the bulb and serves to support the bulb.
Claim 4
Dependent Claim
82 words
The high intensity lamp as claimed in claim 1 in which said shield includes a cuplike portion enclosing the forward end of the bulb, with the free edge of said cuplike portion and the periphery of the reflector lying upon the surface of an imaginary cone, the apex of the imaginary cone being at the center of the bulb filament whereby the light shield prevents light from the bulb which has not first been reflected from the reflector issuing from the lamp.
Claim 5
Dependent Claim
28 words
The high intensity lamp as claimed in claim 1 in which the areas of the reflector through which said connecting leads extend into the enclosure are substantially nonreflective.
Claim 6
Dependent Claim
62 words
The high intensity lamp as claimed in claim 1 further including a second light shield positioned with respect to the bulb to prevent those light rays which have been reflected by the bulb at the base thereof and which would be reflected by the reflector to issue from the lamp upwardly relative to the axis of the rEflector, from striking the reflector.
Claim 7
Dependent Claim
57 words
The high intensity lamp as claimed in claim 5 in which the portions of said second light shield which block light from the portion of the bulb at the base thereof are so positioned that the refracted rays are not scattered by the shield in directions having a deleterious effect on the beam produced by the lamp.
Claim 8
Dependent Claim
29 words
The high intensity lamp as claimed in claim 1 in which said connecting leads are engaged with a rigid heat resistant member serving to minimize flexure of the leads.
Claim 9
Dependent Claim
77 words
The high intensity lamp as claimed in claim 7 further including a second light shield positioned with respect to the bulb to prevent those light rays which have been refracted by the portion of the bulb at the base of the bulb and which would be reflected by the reflector to issue from the lamp upwardly relative to the reflector in use, from striking the reflector and said second shield being engaged with said heat resistant member.
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |