US4158221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light fixture
Assignee: Individual
•
Filing: 1977-03-22
•
Granted: 1979-06-12
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Expires: 1997-03-22
Abstract
Abstract A fixture for a plurality of tubular electric lamps comprises an elongated insulating angle bar-frame having two flat mutually perpendicular flanges joined by a flat central web at 45° to the flanges. Flat conductors on the inner faces of the flanges carry alternately-disposed pairs of L-shaped brackets which support the lamps in axial alignment. The frame can be secured by self-adhesive bands on the outer faces of the flanges, or by screws passing through the central web.
Inventors
- 👤 Youri Agabekov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:18
CPC Classifications
F; F21; F21V; F21V19/00; F21V19/0075; F21V19/008; F21V19/0085; F21S; F21S4/00; F21S4/20; F21W; F21W2131/00; F21W2131/40; F21W2131/405
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
237 words
A fixture for a plurality of tubular electric lamps, said fixture comprising an elongated frame of generally L-shaped cross section formed of insulating material and comprising a pair of longitudinally extending flanges substantially at right angles to each other, a pair of electrically conductive flat metal bars, one such bar extending longitudinally on and lying flat against the inner wall of each flange of the frame, a plurality of pairs of lamp supporting brackets carried by said bars in positions longitudinally spaced therealong, each pair of brackets comprising one bracket attached to one of said bars and another bracket attached to the other of said bars, each of said brackets having a lamp supporting arm cooperating with the lamp supporting arm of the other bracket of the pair, each lamp supporting arm projecting from the bar to which it is attached to a position beside but spaced from the other bar, a lamp supporting portion carried by each of said arms, the lamp supporting portions of each pair of brackets being adapted to support a tubular lamp in a position substantially parallel to and overlying but spaced from both bars with the axis of the lamp lying substantially on the line of juncture of two projected longitudinal planes, one of which planes also includes the longitudinal centerline of one of the bars and the other of which planes also includes the longitudinal centerline of the other bar.
Claim 2
Dependent Claim
237 words
A fixture for a plurality of tubular electric lamps, said fixture comprising an elongated frame of generally L-shaped cross section formed of insulating material and comprising a pair of longitudinally extending flanges substantially at right angles to each other, a pair of electrically conductive flat metal bars, one such bar extending longitudinally on and lying flat against the inner wall of each flange of the frame, a plurality of pairs of lamp supporting brackets carried by said bars in positions longitudinally spaced therealong, each pair of brackets comprising one bracket attached to one of said bars and another bracket attached to the other of said bars, each of said brackets having a lamp supporting arm cooperating with the lamp supporting arm of the other bracket of the pair, each lamp supporting arm projecting from the bar to which it is attached to a position beside but spaced from the other bar, a lamp supporting portion carried by each of said arms, the lamp supporting portions of each pair of brackets being adapted to support a tubular lamp in a position substantially parallel to and overlying but spaced from both bars with the axis of the lamp lying substantially on the line of juncture of two projected longitudinal planes, one of which planes also includes the longitudinal centerline of one of the bars and the other of which planes also includes the longitudinal centerline of the other bar.
Claim 3
Dependent Claim
19 words
A fixture as defined in claim 1 wherein said planes are perpendicular to the flat faces of the bars.
Claim 4
Dependent Claim
57 words
A fixture as defined in claim 1 wherein said planes are perpendicular to the flat faces of the bars and the width of the bars is equal to at least a substantial percentage of the diameter of the lamps whereby the bars underlie the lamps in positions to intercept and reflect light and heat from the lamps.
Claim 5
Dependent Claim
60 words
In a fixture as defined in claim 1, a spacing wall lying between and serving to connect the flanges of the frame and having portions lying at an angle to each of said flanges of the frame and located beside each lamp supporting bracket in positions to block movement of each bracket toward the bar from which it is spaced.
Claim 6
Dependent Claim
41 words
A fixture as defined in claim 4 in which the lamp supporting brackets are riveted to the bars and wherein said portions of the spacing wall which block movement of the brackets prevent unwanted rotation of said brackets around the rivets.
Claim 7
Dependent Claim
59 words
A fixture as defined in claim 5 wherein said lamp supporting brackets are of L-shape, each bracket having a base flange lying flat on the bar to which it is attached, and a rivet extending through each base flange and through the bar and through the flange of the frame, to secure the brackets and bars to the frame.
Claim 8
Dependent Claim
54 words
A fixture as defined in claim 4 wherein the lamp supporting brackets are formed of L-shaped sections of strap metal, each bracket having a base flange lying flat on and secured to one of the bars and having a substantially flat flange defining the lamp supporting arm and projecting perpendicularly from the base flange.
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) | 1982-06-11 | 1982-12-11 | 1983-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-11 | 1986-12-11 | 1987-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-11 | 1990-12-11 | 1991-06-12 | $7700.00 | Window Closed / Lapsed |