US5066889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed led lamp housing
Assignee: Oxley Developments Co Ltd
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Filing: 1990-04-18
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Granted: 1991-11-19
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Expires: 2010-04-18
Abstract
Abstract A sealed LED lamp housing includes a single unit made of a semi-transparent polymer of neutral optical density having a first portion forming a lens, through which light can pass from an LED contained therein, and a second portion, of greater thickness than the first portion, that provides a contrast annulus surrounding the lens.
Inventors
- 👤 Geoffrey S. Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:40
CPC Classifications
F; F21; F21K; F21K9/00; F21W; F21W2111/00; F21W2121/00; F21W2121/02; Y; Y10; Y10S; Y10S362/00; Y10S362/80
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
159 words
A sealed LED lamp housing, comprising: (a) a unitary housing member made of a semi-transparent polymer of neutral optical density; (b) the unitary housing member has a first, elongate, cylindrical portion defining an internal cylindrical cavity which receives the LED therewithin; (c) the unitary housing member has a second portion forming a cylindrical lens located in front of the LED and disposed in said cylindrical cavity; (d) the unitary housing member has a third, annular portion which is coaxial with the first portion and laterally surrounds the second portion; (e) the third portion is of greater thickness than the second portion relative to the axial direction of the first, cylindrical portion, so as to provide a contrast annulus surrounding the second portion; (f) the third portion is of greater diameter than the first cylindrical portion so that the third portion overlaps the first portion; and (g) means for sealing between said overlap and an external apparatus receiving said housing.
Claim 2
Dependent Claim
159 words
A sealed LED lamp housing, comprising: (a) a unitary housing member made of a semi-transparent polymer of neutral optical density; (b) the unitary housing member has a first, elongate, cylindrical portion defining an internal cylindrical cavity which receives the LED therewithin; (c) the unitary housing member has a second portion forming a cylindrical lens located in front of the LED and disposed in said cylindrical cavity; (d) the unitary housing member has a third, annular portion which is coaxial with the first portion and laterally surrounds the second portion; (e) the third portion is of greater thickness than the second portion relative to the axial direction of the first, cylindrical portion, so as to provide a contrast annulus surrounding the second portion; (f) the third portion is of greater diameter than the first cylindrical portion so that the third portion overlaps the first portion; and (g) means for sealing between said overlap and an external apparatus receiving said housing.
Claim 3
Dependent Claim
14 words
The housing according to claim 1, wherein said first portion comprises an external screw-thread.
Claim 4
Dependent Claim
21 words
The housing according to claim 1, wherein said third portion has a matt surface finish for scattering ambient light incident thereon.
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) | 1994-11-18 | 1995-05-20 | 1995-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-18 | 1999-05-20 | 1999-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-18 | 2003-05-20 | 2003-11-19 | $7700.00 | Window Closed / Lapsed |