Patent US3748463A successfully refreshed from Google Patents.
US3748463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor lamp
Assignee: SORMANI SpA
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Filing: 1972-08-30
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Granted: 1973-07-24
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Expires: 1992-08-30
Abstract
Abstract A glass globe is supported on a pair of metallic sleeves riding two arcuate, parallel metal rods which terminate at two bases, one of these bases containing a step-down transformer by which the two rods may be energized with low-voltage current. A bulb inside the globe has terminals connected to the two sleeves so as to light upon closure of a switch; the globe can be immobilized anywhere along the guidepath represented by the two rods and may be blackened at the top to emit light only downwardly.
Inventors
- 👤 D Trassinelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:39
CPC Classifications
F; F21; F21S; F21S6/00; F21S6/005; F21V; F21V21/00; F21V21/14; F21V21/30; F21V21/34; F21V21/35; F21V23/00; F21V23/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
81 words
A lighting fixture comprising; a pair of spaced-apart bases resting on a foundation; two curved parallel conductors bridging said bases in arcs rising above said foundation; a source of electric current connected across said conductors; a pair of sliders engaging said conductors for displacement along said arcs, said sliders forming conductive extensions of said conductors; and a lamp body supported by said sliders between said conductors, said lamp body being electrically connected to said source through said sliders and said conductors.
Claim 2
Dependent Claim
81 words
A lighting fixture comprising; a pair of spaced-apart bases resting on a foundation; two curved parallel conductors bridging said bases in arcs rising above said foundation; a source of electric current connected across said conductors; a pair of sliders engaging said conductors for displacement along said arcs, said sliders forming conductive extensions of said conductors; and a lamp body supported by said sliders between said conductors, said lamp body being electrically connected to said source through said sliders and said conductors.
Claim 3
Dependent Claim
19 words
A fixture as defined in claim 1 wherein said source comprises a step-down transformer in one of said bases.
Claim 4
Dependent Claim
21 words
A fixture as defined in claim 1 wherein said lamp body comprises a transparent envelope and a bulb in said envelope.
Claim 5
Dependent Claim
17 words
A fixture as defined in claim 3 wherein said envelope is provided with an opaque upper surface.
Claim 6
Dependent Claim
12 words
A fixture as defined in claim 3 wherein said envelope is spherical.
Claim 7
Dependent Claim
22 words
A fixture as defined in claim 5 wherein said sliders form a pair of gudgeons on a common diameter of the sphere.
Claim 8
Dependent Claim
16 words
A fixture as defined in claim 1 wherein said conductors are composed of detachable interfitted segments.
Claim 9
Dependent Claim
12 words
A fixture as defined in claim 7 wherein said segments are rod-shaped.
Claim 10
Dependent Claim
27 words
A fixture as defined in claim 1 wherein said sliders are provided with fastening means for immobilizing said lamp body in any selected position along said arcs.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |