US4785385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traffic light lens
Assignee: EAGLE SIGNAL (1980) PTY Ltd
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Filing: 1986-08-06
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Granted: 1988-11-15
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Expires: 2006-08-06
Abstract
Abstract A lens (16) suitable for use with traffic lights has a body portion (20) that is a segment of a sphere and a mounting or sealing ring (21) at the periphery of the body portion. An array of lenticular elements (22) is formed on the concave inner surface of the body portion (20) and is arranged in rows extending substantially horizontally across the concave inner surface of the body portion of the lens. Between each adjacent lenticular element there is a recess (25) to modify the reflection pattern of the lens.
Inventors
- 👤 Barrie J. Holst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:23
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/09; G08G1/095; F; F21; F21V; F21V5/00; G02; G02B; G02B3/00; G02B3/02; G02B3/08; F21W; F21W2111/00; F21W2111/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
81 words
A lens suitable for use with traffic lights comprising a body portion that is a segment of a sphere and an array of lenticular elements formed on a concave inner surface of the body portion arranged in rows extending substantially horizontally across the concave inner surface of the body portion of the lens, characterized in that there is provided between each adjacent lenticular element a relatively smaller recess in the body portion wherein each relatively smaller recess is of semi-spherical form.
Claim 2
Dependent Claim
81 words
A lens suitable for use with traffic lights comprising a body portion that is a segment of a sphere and an array of lenticular elements formed on a concave inner surface of the body portion arranged in rows extending substantially horizontally across the concave inner surface of the body portion of the lens, characterized in that there is provided between each adjacent lenticular element a relatively smaller recess in the body portion wherein each relatively smaller recess is of semi-spherical form.
Claim 3
Dependent Claim
24 words
A lens according to claim 1 wherein a planar portion is formed between an upper extremity of each lenticular element and an adjacent recess.
Claim 4
Dependent Claim
21 words
A lens according to claim 1 and further including a mounting or sealing ring at the periphery of the body portion.
Claim 5
Dependent Claim
42 words
A lens according to claim 1 wherein the body portion is of a predetermined thickness, the lenticular elements are formed on the concave inner surface as additional material to the body portion and each said recess is formed into the body portion.
Claim 6
Dependent Claim
20 words
A lens according to claim 1 wherein each said recess is positioned at the upper corners of adjacent lenticular elements.
Claim 7
Dependent Claim
26 words
A lens accordin9 to claim 1 wherein each said recess is so shaped that light rays directed to the centre of each recess emerge substantially horizontal.
Claim 8
Dependent Claim
27 words
A lens according to claim 1 wherein each said recess is so shaped that light rays directed to the lower portion of each recess are refracted downwardly.
Claim 9
Dependent Claim
28 words
A lens according to claim 1 wherein each said recess is so shaped that light rays directed to the upper portion of each said recess are refracted upwardly.
Claim 10
Dependent Claim
28 words
A lens according to claim 1 wherein light rays directed to the lateral extremities of each said recess is refracted away from the axis of each said recess.
Claim 11
Dependent Claim
104 words
A lens suitable for use with traffic lights comprising a body portion that is a segment of a sphere and an array of lenticular elements formed on a concave inner surface of the body portion arranged in rows extending substantially horizontally across the concave inner surface of the body portion of the lens, characterized in that there is provided between each adjacent lenticular element a relatively smaller recess in the body portion wherein a planar portion is formed between an upper extremity of each lenticular element and an adjacent recess, said planar portion being parallel to an outer surface portion of said body portion.
Claim 12
Dependent Claim
104 words
A lens suitable for use with traffic lights comprising a body portion that is a segment of a sphere and an array of lenticular elements formed on a concave inner surface of the body portion arranged in rows extending substantially horizontally across the concave inner surface of the body portion of the lens, characterized in that there is provided between each adjacent lenticular element a relatively smaller recess in the body portion wherein a planar portion is formed between an upper extremity of each lenticular element and an adjacent recess, said planar portion being parallel to an outer surface portion of said body portion.
References Cited (Backward Citations)
DE110583C
Cited
GB105681A
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FR801422A
Cited
GB463499A
Cited
FR1030512A
Cited
US3267278A
Cited
AU5086873A
Cited
US4484254A
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AU4498785A
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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) | 1991-11-15 | 1992-05-16 | 1992-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-15 | 1996-05-16 | 1996-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-15 | 2000-05-16 | 2000-11-15 | $7700.00 | Window Closed / Lapsed |