US4860174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting device for use with vehicles
Assignee: Ichikoh Industries Ltd
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Filing: 1988-04-15
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Granted: 1989-08-22
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Expires: 2008-04-15
Abstract
Abstract A lighting device for use with vehicles having a lens longer in the horizontal direction thereof and a transparent sheet attached to the back or front face of the lens wherein said transparent sheet is provided with light shielding portions whose density becomes lower and lower from one side of the sheet to the other side thereof.
Inventors
- 👤 Akio Kato
- 👤 Hideo Naito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:15
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/2607
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
74 words
A lighting device for use with a vehicle comprising: a lamp means; a lens means disposed to distribute light from said lamp means; a transparent sheet having disposed thereon means for shielding external light from said lighting device of the vehicle; said means for shielding external light comprising a graduated pattern of varying density disposed along at least a first edge of said transparent sheet, thereby shielding light in different amounts according to density.
Claim 2
Dependent Claim
74 words
A lighting device for use with a vehicle comprising: a lamp means; a lens means disposed to distribute light from said lamp means; a transparent sheet having disposed thereon means for shielding external light from said lighting device of the vehicle; said means for shielding external light comprising a graduated pattern of varying density disposed along at least a first edge of said transparent sheet, thereby shielding light in different amounts according to density.
Claim 3
Dependent Claim
27 words
The lighting device for use with vehicles according to claim 1 wherein said lens means includes outer and inner lenses and said transparent sheet is attached therebetween.
Claim 4
Dependent Claim
36 words
The lighting device for use with vehicles according to claim 2, wherein said graduated pattern comprises a plurality of straight lines extending on the transparent sheet in the longitudinal direction thereof parallel to said first edge.
Claim 5
Dependent Claim
20 words
The lighting device for use with vehicles according to claim 2 wherein said graduated pattern comprises a plurality of dots.
Claim 6
Dependent Claim
25 words
The lighting device for use with vehicles according to claim 2, wherein said graduated pattern comprises a plurality of letters, figures symbols or combinations thereof.
Claim 7
Dependent Claim
61 words
The lighting device for use with vehicles according to claim 2, wherein said graduated pattern is formed on the transparent sheet in decreasing density from said first edge to the center thereof and from a second edge parallel to said first edge to the center thereof, whereby the greatest amount of external light is shielded along said first and second edges.
Claim 8
Dependent Claim
40 words
The lighting device for use with vehicles according to claim 6, wherein said graduated pattern is formed on the transparent sheet in decreasing density from third and fourth edges perpendicular to said first and second edges to the center thereof.
Claim 9
Dependent Claim
21 words
The lighting device for use with vehicles according to claim 2 wherein said graduated pattern is printed on the transparent sheet.
Claim 10
Dependent Claim
19 words
The lighting device for use with vehicles according to claim 2 wherein said graduated pattern is colored in black.
Claim 11
Dependent Claim
19 words
The lighting device for use with vehicles according to claim 2, further comprising a housing defining a lamp chamber.
Claim 12
Dependent Claim
17 words
The lighting device for use with vehicles according to claim 2 wherein said transparent sheet is flexible.
Claim 13
Dependent Claim
25 words
The lighting device for use with vehicles according to claim 11 wherein said lens means and said transparent sheet are curved along end portions thereof.
Claim 14
Dependent Claim
57 words
The lighting device for use with vehicles according to claim 1 wherein said lens is provided with engaging portions while said transparent sheet is provided with engaged portions and said transparent sheet is attached to the lens in such a way that the engaged portions of the former are engaged with the engaging portions of the latter.
Claim 15
Dependent Claim
45 words
The lighting device for use with vehicles according to claim 1 wherein beads are continuously formed along the both longitudinal sides of the lens and the both longitudinal sides of the transparent sheet are continuously welded to the beads according to the ultrasonic welding technique.
Claim 16
Dependent Claim
36 words
The lighting device for use with vehicles according to claim 1, wherein said graduated pattern comprises a plurality of straight lines extending on the transparent sheet in the longitudinal direction thereof parallel to said first edge.
Claim 17
Dependent Claim
20 words
The lighting device for use with vehicles according to claim 1 wherein said graduated pattern comprises a plurality of dots.
Claim 18
Dependent Claim
25 words
The lighting device for use with vehicles according to claim 1, wherein said graduated pattern comprises a plurality of letters, figures, symbols or combinations thereof.
Claim 19
Dependent Claim
61 words
The lighting device for use with vehicles according to claim 1, wherein said graduated pattern is formed on the transparent sheet in decreasing density from said first edge to the center thereof and from a second edge parallel to said first edge to the center thereof, whereby the greatest amount of external light is shielded along said first and second edges.
Claim 20
Dependent Claim
40 words
The lighting device for use with vehicles according to claim 18, wherein said graduated pattern is formed on the transparent sheet in decreasing density from third and fourth edges perpendicular to said first and second edges to the center thereof.
Claim 21
Dependent Claim
21 words
The lighting device for use with vehicles according to claim 1, wherein said graduated pattern is printed on the transparent sheet.
Claim 22
Dependent Claim
19 words
The lighting device for use with vehicles according to claim 1, wherein said graduated pattern is colored in black.
Claim 23
Dependent Claim
37 words
The lighting device for use with vehicles according to claim 1, wherein said graduated pattern is formed on the transparent sheet in decreasing density from said first edge to a second edge parallel to said first edge.
Claim 24
Dependent Claim
57 words
The lighting device for use with vehicles according to claim 1, wherein said lens is provided with engaging portions while said transparent sheet is provided with engaged portions and said transparent sheet is attached to the lens in such a way that the engaged portions of the former are engaged with the engaging portions of the latter.
Claim 25
Dependent Claim
45 words
The lighting device for use with vehicles according to claim 1, wherein beads are continuously formed along the both longitudinal sides of the lens and the both longitudinal sides of the transparent sheet are continuously welded to the beads according to the ultrasonic welding technique.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-21 | 1993-02-20 | 1993-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-21 | 1997-02-20 | 1997-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-21 | 2001-02-20 | 2001-08-22 | $7700.00 | Window Closed / Lapsed |