Patent EP0560320A1 successfully refreshed from Google Patents.
US4422133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminating device with reflector portions and voids opposite thereof
Assignee: Individual
•
Filing: 1981-11-09
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Granted: 1983-12-20
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Expires: 2001-11-09
Abstract
Abstract A luminaire has a spherical or ovoid reflector formed with asymmetrical voids that allow beams from the lightbulb in the reflector to emerge side-by-side through the voids in opposite directions after reflection from opposite internal surfaces of the reflector.
Inventors
- 👤 William B. Elmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:32
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/08; F21S8/085; F21S8/086; F21V; F21V7/00; F21V7/04; F21V7/09
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
160 words
Lighting apparatus for producing at least two major beams of light in substantially different directions comprising, reflecting means having depending first and second side portions on opposite sides of the reflecting means lengthwise axis for reflecting light from a source therein, means for supporting a light source within said reflecting means so that said reflecting means may direct light energy from said light source into said at least first and second major beams of light in substantially different first and second directions respectively after reflection from said first and second side portions respectively, said reflecting means being formed with said first and second side portions being relatively displaced in a direction generally parallel to said lengthwise axis to create voids allowing each of said first and second major beams to bypass each other after reflection from said first and second side portions respectively and emerge from said reflecting means through said voids beside said second and first side portions respectively.
Claim 2
Dependent Claim
160 words
Lighting apparatus for producing at least two major beams of light in substantially different directions comprising, reflecting means having depending first and second side portions on opposite sides of the reflecting means lengthwise axis for reflecting light from a source therein, means for supporting a light source within said reflecting means so that said reflecting means may direct light energy from said light source into said at least first and second major beams of light in substantially different first and second directions respectively after reflection from said first and second side portions respectively, said reflecting means being formed with said first and second side portions being relatively displaced in a direction generally parallel to said lengthwise axis to create voids allowing each of said first and second major beams to bypass each other after reflection from said first and second side portions respectively and emerge from said reflecting means through said voids beside said second and first side portions respectively.
Claim 3
Dependent Claim
82 words
Lighting apparatus in accordance with claim 1 for illuminating relatively narrow and elongated areas such as roadways or long walls in which said reflecting means has said first and second side portions so disposed as to project bypassing major beams toward opposite portions of said relatively narrow and elongated area and two of said voids are created opposite respective ones of said first and second side portions to allow said two major beams to emerge through respective ones of said two voids.
Claim 4
Dependent Claim
41 words
Lighting apparatus in accordance with claim 2 wherein said two voids are created in two diagonally opposite portions of said reflecting means to allow passage of two generally opposite side-by-side major beams from respective ones of said two diagonally opposite portions.
Claim 5
Dependent Claim
33 words
Lighting apparatus in accordance with claim 3 in which the nearer of said voids is located on the right side of the lower portion of said reflecting means when viewed from either side.
Claim 6
Dependent Claim
80 words
Lighting apparatus in accordance with claim 2 wherein said reflecting means comprises four asymmetric sections with one of said voids being formed in one of the two upper sections and a second of said voids being formed in the diagonally opposite lower section of said reflecting means, whereby the other two of said four asymmetric sections comprise said first and second side portions and are enabled to project major beams in generally opposite directions through respective ones of said voids.
Claim 7
Dependent Claim
39 words
Lighting apparatus in accordance with any one of claims 1-5 wherein said reflecting means comprises detachably securable reflecting surfaces comprising means for selectively converting said lighting apparatus from bidirectional to monodirectional operation by selectively attaching detachably securable reflecting portions.
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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) | 1986-12-19 | 1987-06-20 | 1987-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-19 | 1991-06-20 | 1991-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-19 | 1995-06-20 | 1995-12-20 | $7700.00 | Window Closed / Lapsed |