US3997776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indirect lighting fixture
Assignee: SPI LIGHTING Inc A CORP OF WI
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Filing: 1975-07-31
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Granted: 1976-12-14
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Expires: 1995-07-31
Abstract
Abstract An indirect lighting fixture for illuminating a desk top with light reflected from a room ceiling and for close association with the desk side comprises a hollow base extending beneath the desk, a pair of laterally spaced apart hollow support legs connected to the outermost side corners of the base and extending upwardly alongside the desk, and a lamp compartment connected to the upper ends of the legs and extending over the desk top in cantilever fashion above eye level. The lamp compartment which is open at the top but provided with a lens contains a metal halide or high pressure sodium lamp and a reflector for aiming the lamp light directly onto the ceiling for reflection directly down onto the desk top. The base contains relatively heavy electrical ballast components for starting and operating the lamp which also serve to weight the base and stabilize the fixture. The electrical components in the base are connected to the lamp by conductors within one of the support legs and the base is provided with a line cord and on-off switch.
Inventors
- 👤 Alan J. Ruud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:20
CPC Classifications
F; F21; F21S; F21S6/00; F21S6/005; F21S6/007; F21V; F21V33/00; F21V33/0004; F21V33/0012; A; A47; A47B; A47B97/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
146 words
An indirect lighting fixture comprising: a hollow base having lamp operating electrical components therein; a lamp compartment in registry with and disposed above said base and having a lamp and reflector means therein for directing light upwardly, said lamp compartment being open to accommodate light transmission on its upper side and closed against light transmission on its lower side; said base and said components therein having a combined weight greater than the combined weight of said lamp compartment and said lamp and reflector means therein; at least one hollow upwardly extending support leg connected near a side of said base and connected near a corresponding side of said lamp compartment for holding said lamp compartment above eye level; electrical conductor means electrically connected between said components and said lamp and extending through said leg; and a line cord electrically connected to said components in said base.
Claim 2
Dependent Claim
146 words
An indirect lighting fixture comprising: a hollow base having lamp operating electrical components therein; a lamp compartment in registry with and disposed above said base and having a lamp and reflector means therein for directing light upwardly, said lamp compartment being open to accommodate light transmission on its upper side and closed against light transmission on its lower side; said base and said components therein having a combined weight greater than the combined weight of said lamp compartment and said lamp and reflector means therein; at least one hollow upwardly extending support leg connected near a side of said base and connected near a corresponding side of said lamp compartment for holding said lamp compartment above eye level; electrical conductor means electrically connected between said components and said lamp and extending through said leg; and a line cord electrically connected to said components in said base.
Claim 3
Dependent Claim
16 words
An indirect lighting fixture according to claim 1 wherein said electrical components include an on-off switch.
Claim 4
Dependent Claim
17 words
An indirect lighting fixture according to claim 2 including a pair of laterally spaced apart support legs.
Claim 5
Dependent Claim
25 words
An indirect lighting fixture according to claim 3 wherein said switch is located between said pair of support legs near said side of said base.
Claim 6
Dependent Claim
171 words
An indirect lighting fixture comprising: a hollow base having a flat outer side; a lamp compartment having a flat outer side in registry with and disposed above said base, said lamp compartment being open to accommodate light transmission on its upper side and closed against light transmission on its lower side; a lamp and reflector means in said lamp compartment for directing light upwardly; at least one hollow upwardly extending support leg connected near said flat side of said base and connected near the corresponding flat side of said lamp compartment for holding said lamp compartment above said base at a distance which exceeds average human eye level; electrical components in said base for operating said lamp, said base and said components therein having a combined weight greater than the combined weight of said lamp compartment and said lamp and reflector means therein; electrical conductor means electrically connected between said components and said lamp and extending through said leg; and a line cord electrically connected to said components in said base.
Claim 7
Dependent Claim
171 words
An indirect lighting fixture comprising: a hollow base having a flat outer side; a lamp compartment having a flat outer side in registry with and disposed above said base, said lamp compartment being open to accommodate light transmission on its upper side and closed against light transmission on its lower side; a lamp and reflector means in said lamp compartment for directing light upwardly; at least one hollow upwardly extending support leg connected near said flat side of said base and connected near the corresponding flat side of said lamp compartment for holding said lamp compartment above said base at a distance which exceeds average human eye level; electrical components in said base for operating said lamp, said base and said components therein having a combined weight greater than the combined weight of said lamp compartment and said lamp and reflector means therein; electrical conductor means electrically connected between said components and said lamp and extending through said leg; and a line cord electrically connected to said components in said base.
Claim 8
Dependent Claim
16 words
An indirect lighting fixture according to claim 5 wherein said electrical components include an on-off switch.
Claim 9
Dependent Claim
17 words
An indirect lighting fixture according to claim 6 including a pair of laterally spaced apart support legs.
Claim 10
Dependent Claim
26 words
An indirect lighting fixture according to claim 7 wherein said switch is located between said pair of support legs near said flat side of said base.
Claim 11
Dependent Claim
176 words
In combination: a furniture piece having a top, a side and a space therebeneath accessible from said side; and a free-standing indirect lighting fixture associated with said furniture piece; said fixture comprising a base extending into said space from said side; a lamp compartment disposed over the top of said furniture piece and in registry with said base, said lamp compartment being open to accommodate light transmission on its upper side and closed against light transmission on its lower side; a lamp and reflector means within said compartment for directing light upwardly for downward reflection from a ceiling onto the top of said furniture piece; at least one hollow supporting leg connected between a side of said base nearest said side of said furniture piece and a corresponding side of said lamp compartment for holding said lamp compartment elevated at a distance in excess of average human eye level; electrical components in said base for operating said lamp; and electrical conductor means electrically connected between said components and said lamp and extending through said supporting leg.
Claim 12
Dependent Claim
176 words
In combination: a furniture piece having a top, a side and a space therebeneath accessible from said side; and a free-standing indirect lighting fixture associated with said furniture piece; said fixture comprising a base extending into said space from said side; a lamp compartment disposed over the top of said furniture piece and in registry with said base, said lamp compartment being open to accommodate light transmission on its upper side and closed against light transmission on its lower side; a lamp and reflector means within said compartment for directing light upwardly for downward reflection from a ceiling onto the top of said furniture piece; at least one hollow supporting leg connected between a side of said base nearest said side of said furniture piece and a corresponding side of said lamp compartment for holding said lamp compartment elevated at a distance in excess of average human eye level; electrical components in said base for operating said lamp; and electrical conductor means electrically connected between said components and said lamp and extending through said supporting leg.
Claim 13
Dependent Claim
32 words
A combination according to claim 9 wherein the combined weight of said base and said electrical components therein exceeds the combined weight of said lamp compartment and said lamp reflector means therein.
Claim 14
Dependent Claim
18 words
A combination according to claim 10 wherein said fixture comprises a pair of laterally spaced apart supporting legs.
Claim 15
Dependent Claim
17 words
A combination according to claim 11 wherein said electrical components in said base includes an on-off switch.
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) | 1979-12-14 | 1980-06-14 | 1980-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-14 | 1984-06-14 | 1984-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-14 | 1988-06-14 | 1988-12-14 | $7700.00 | Window Closed / Lapsed |