US4922398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automotive lamp assembly
Assignee: Ichikoh Industries Ltd
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Filing: 1988-03-31
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Granted: 1990-05-01
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Expires: 2008-03-31
Abstract
Abstract In a light assembly in which a holder in which a bulb is fixed is replaceably mounted in a lamp housing having a reflector formed integrally therewith, the portion near the apex of the reflective surface of the reflector is formed flat, so that the reflective surface of the reflector can be formed without taking in consideration the molding precision of the portion near the apex and that any of the lamp units under different standards are applied can be accomodated. Furthermore, since the light emitted from the filament and going toward the flat portion can be prevented by a shade from being incident upon the flat portion, thus preventing any glaring light from occurring.
Inventors
- 👤 Masakazu Muto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:24
CPC Classifications
F; F21; F21S; F21S41/00; F21S41/40; F21S41/43; F21S41/30; F21S41/32; F21S41/10; F21S41/19
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
164 words
A replaceable light assembly comprising: a lamp housing having a reflector having a curved surface with an apex formed integrally therewith; a lamp unit provided with a lamp holder and a lamp bulb attached to said lamp holder, which is inserted through an opening formed at a portion including the apex of said reflector so that a filament of said lamp bulb is positioned near a focal spot of a reflective surface of said reflector; a portion of said reflective surface around said opening being positively formed as a flat surface contiguous to said curved surface and substantially perpendicular to the optical axis of said reflector and having a given area; and a shade provided in relation to the area of said flat surface for preventing the light emitted from said filament from being incident upon said flat surface and for directing the light emitted from said filament toward other portions of said reflective surface, whereby the reflector can accommodate differently sized lamp units.
Claim 2
Dependent Claim
164 words
A replaceable light assembly comprising: a lamp housing having a reflector having a curved surface with an apex formed integrally therewith; a lamp unit provided with a lamp holder and a lamp bulb attached to said lamp holder, which is inserted through an opening formed at a portion including the apex of said reflector so that a filament of said lamp bulb is positioned near a focal spot of a reflective surface of said reflector; a portion of said reflective surface around said opening being positively formed as a flat surface contiguous to said curved surface and substantially perpendicular to the optical axis of said reflector and having a given area; and a shade provided in relation to the area of said flat surface for preventing the light emitted from said filament from being incident upon said flat surface and for directing the light emitted from said filament toward other portions of said reflective surface, whereby the reflector can accommodate differently sized lamp units.
Claim 3
Dependent Claim
179 words
A replaceable light assembly comprising: a lamp housing having a reflector having a curved surface with an apex formed integrally therewith; a lamp unit provided with a lamp holder and a lamp bulb attached to said lamp holder, which is inserted through an opening formed at a portion including the apex of said reflector so that a filament of said lamp bulb is positioned near a focal spot of a reflective surface of said reflector; means, including a portion of said reflective surface around said opening positively formed as a flat surface contiguous to said curved surface and substantially perpendicular to the optical axis of said reflector, for providing a flat surface area having a sufficient size to permit formation therein of an opening of selected diameter to accommodate one of differently sized lamp units; and a shade provided in relation to the area of said flat surface for preventing the light emitted from said filament from being incident upon said flat surface and for directing the light emitted from said filament toward other portions of said reflective surface.
Claim 4
Dependent Claim
179 words
A replaceable light assembly comprising: a lamp housing having a reflector having a curved surface with an apex formed integrally therewith; a lamp unit provided with a lamp holder and a lamp bulb attached to said lamp holder, which is inserted through an opening formed at a portion including the apex of said reflector so that a filament of said lamp bulb is positioned near a focal spot of a reflective surface of said reflector; means, including a portion of said reflective surface around said opening positively formed as a flat surface contiguous to said curved surface and substantially perpendicular to the optical axis of said reflector, for providing a flat surface area having a sufficient size to permit formation therein of an opening of selected diameter to accommodate one of differently sized lamp units; and a shade provided in relation to the area of said flat surface for preventing the light emitted from said filament from being incident upon said flat surface and for directing the light emitted from said filament toward other portions of said reflective surface.
References Cited (Backward Citations)
NL55736C
Cited
US2088544A
Cited
FR1160871A
Cited
US3896302A
Cited
US3835342A
Cited
US4268895A
Cited
GB2022234A
Cited
US4563730A
Cited
US4423471A
Cited
US4679127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-30 | 1993-10-30 | 1994-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-30 | 1997-10-30 | 1998-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-30 | 2001-10-30 | 2002-05-01 | $7700.00 | Window Closed / Lapsed |