US4739223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Headlight unit
Assignee: Toshiba Corp
•
Filing: 1986-10-16
•
Granted: 1988-04-19
•
Expires: 2006-10-16
Abstract
Abstract This invention provides a headlight unit comprising: a light source; reflector means for reflecting the light from the light source into a beam; and circuit means for adjusting the position of the beam and for controlling the degree of rotation of the reflecting means.
Inventors
- 👤 Masaharu Baba
- 👤 Nobuhiko Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:41
CPC Classifications
F; F21; F21S; F21S41/00; F21S41/60; F21S41/67; F21S41/675
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
190 words
A head light unit comprising: a light source; movable reflector means positionable at one of a first and a second positions for reflecting the light from the light source; means for manually selecting one of the first and the second positions of the reflector; electric actuator means responsive to the selecting means and coupled to the reflector means for positioning the reflector means to one of the first and the second positions. first variable resistor means for manually determining the first position of the reflector means by providing a first adjustment to the actuator means for reflecting the light from the light source in the first predetermined direction when the reflector means is situated at the first position; and second variable resistor means connected to the first variable resistor means for manually determining the second position of the reflector means by providing a second adjustment to the actuator means on the basis of the first adjustment of the first variable resistor means for reflecting the light from the light source in a second predetermined direction different to the first direction when the reflector means is situated at the second position.
Claim 2
Dependent Claim
190 words
A head light unit comprising: a light source; movable reflector means positionable at one of a first and a second positions for reflecting the light from the light source; means for manually selecting one of the first and the second positions of the reflector; electric actuator means responsive to the selecting means and coupled to the reflector means for positioning the reflector means to one of the first and the second positions. first variable resistor means for manually determining the first position of the reflector means by providing a first adjustment to the actuator means for reflecting the light from the light source in the first predetermined direction when the reflector means is situated at the first position; and second variable resistor means connected to the first variable resistor means for manually determining the second position of the reflector means by providing a second adjustment to the actuator means on the basis of the first adjustment of the first variable resistor means for reflecting the light from the light source in a second predetermined direction different to the first direction when the reflector means is situated at the second position.
Claim 3
Dependent Claim
15 words
A unit according to claim 1, wherein the first position is a high beam position.
Claim 4
Dependent Claim
15 words
A unit according to claim 2, wherein the second position is a low beam position.
Claim 5
Dependent Claim
19 words
A headlight unit according to claim 1 wherein the actuator includes a motor having an adjustable angle of rotation.
Claim 6
Dependent Claim
13 words
A headlight unit according to claim 4 wherein the motor is a servo-motor.
Claim 7
Dependent Claim
14 words
A headlight unit according to claim 4 wherein the motor is a stepping motor.
References Cited (Backward Citations)
US1259252A
Cited
US1819690A
Cited
US3079529A
Cited
JPS477746A
Cited
US4186428A
Cited
US4513357A
Cited
US4533860A
Cited
US4620267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-19 | 1991-10-19 | 1992-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-19 | 1995-10-19 | 1996-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-19 | 1999-10-19 | 2000-04-19 | $7700.00 | Window Closed / Lapsed |