Patent JPS5285696A successfully refreshed from Google Patents.
US4825344A
Expired / Lapsed
US
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Headlamp for vehicles
Assignee: Stanley Electric Co Ltd
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Filing: 1987-07-28
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Granted: 1989-04-25
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Expires: 2007-07-28
Abstract
Abstract A headlamp for vehicles has a lens and a parabolic reflector which are made of synthetic resin and which are joined together by heat. A composite, light scattering reflector for scattering or spreading the light to be concentrated to the upper and central portion of the lens to an extend that no glare is generated, is arranged at the upper and central portion of the parabolic reflector. The composite reflector may be integrally formed with the main parabolic reflector, or may be a separate element joined to the main parabolic reflector.
Inventors
- 👤 Takeo Ichihara
- 👤 Takashi Futami
- 👤 Nobutaka Oda
- 👤 Shuichi Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:05
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/10; F21S; F21S41/00; F21S41/30; F21S41/32; F21S41/33; F21S41/334
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
117 words
A headlamp for vehicles having a parabolic reflector arranged to reflect light from a light source to form a region of highly concentrated light on a lens, at which region a high temperature consequently exists, comprising: a source of light; a lens made of a synthetic resin; a main parabolic reflector arranged to reflect light from said light source through said lens; a composite reflector coupled to said main parabolic reflector and including means for reflecting and concentrating light from said light source toward said region of the lens to spread the concentrated light so as to expand the area of the region of highly concentrated light to a predetermined wider region and thereby reduce its temperature.
Claim 2
Dependent Claim
117 words
A headlamp for vehicles having a parabolic reflector arranged to reflect light from a light source to form a region of highly concentrated light on a lens, at which region a high temperature consequently exists, comprising: a source of light; a lens made of a synthetic resin; a main parabolic reflector arranged to reflect light from said light source through said lens; a composite reflector coupled to said main parabolic reflector and including means for reflecting and concentrating light from said light source toward said region of the lens to spread the concentrated light so as to expand the area of the region of highly concentrated light to a predetermined wider region and thereby reduce its temperature.
Claim 3
Dependent Claim
20 words
The headlamp of claim 1, wherein said composite reflector is integrally formed as one piece with said main parabolic reflector.
Claim 4
Dependent Claim
32 words
The headlamp of claim 1, wherein said composite reflector is separately formed from said main parabolic reflector, and comprising means for fixedly connecting said separate composite reflector to said main parabolic reflector.
Claim 5
Dependent Claim
21 words
The headlamp of claim 1, wherein the composite reflector is at the upper and central portion of said main parabolic reflector.
Claim 6
Dependent Claim
19 words
The headlamp claim 4, wherein said composite reflector is integrally formed as one piece with said main parabolic reflector.
Claim 7
Dependent Claim
21 words
The headlamp of claim 1, wherein the composite reflector is at the upper and central portion of said main parabolic reflector.
Claim 8
Dependent Claim
47 words
The headlamp of claim 1, wherein said connecting means comprises a plurality of projections on a side of said composite reflector facing away from said light source, means on the main parabolic reflector for receiving said projections, and means for fixing said projections to said receiving means.
Claim 9
Dependent Claim
20 words
The headlamp of claim 7, wherein said fixing means is a screw cooperating with a tapped hole in said projections.
Claim 10
Dependent Claim
12 words
The headlamp of claim 7, wherein said fixing means is an adhesive.
Claim 11
Dependent Claim
24 words
The headlamp of claim 1, further comprising sealing means to provide a water tight seal between the main parabolic reflector and the composite reflector.
Claim 12
Dependent Claim
12 words
The headlamp of claim 1, wherein said connecting means is an adhesive.
Claim 13
Dependent Claim
16 words
The headlamp of claim 1, wherein said main parabolic reflector is made of a synthetic resin.
Claim 14
Dependent Claim
20 words
The headlamp of claim 12, wherein the main parabolic reflector and the composite reflector are heat sealed to each other.
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) | 1992-04-24 | 1992-10-24 | 1993-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-24 | 1996-10-24 | 1997-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-24 | 2000-10-24 | 2001-04-25 | $7700.00 | Window Closed / Lapsed |