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US4389699A Expired / Lapsed US ⏱️ 0.0 years remaining

Swivel cell light fixture

Assignee: Armstrong World Industries Inc
•
Filing: 1981-09-11
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Granted: 1983-06-21
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Expires: 2001-09-11
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Abstract

Abstract A light fixture is provided with a plurality of reflectors, each reflector is adjustable to a different position whereby the light fixture may provide plural paths of light. The light fixture has two end plates, a support bar, and a light tube. Individual adjustable reflectors are carried by the support bar and pass around the light tube. Depending upon the position of the reflector, the single light tube may provide lumination in a number of different areas.

Inventors

  • 👤 Ned S. Qualls

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 07:27
CPC Classifications
F; F21; F21V; F21V14/00; F21V14/02; F21V17/00; F21V17/005; F21V17/02; F21V21/00; F21V21/14; F21V21/30; F21V7/00; F21V7/005; F21V7/10; F21S; F21S2/00; F21S2/005; F21V17/10; F21V17/104; F21V17/16; F21V17/164; F21Y; F21Y2103/00

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 301 words
A light fixture capable of directing light in several different directions, said light fixture comprising: (a) a support structure for a single fluorescent tube, said support structure being (1) two end plates having positioned thereon means for receiving the ends of a fluorescent light tube, (2) a support bar positioned between said two end plates and rigidly holding the two end plates in position, (3) a single fluorescent light tube positioned between the two end plates in its tube end receiving means and in a parallel relationship with the support bar, (b) a plurality of individual adjustable reflectors for directing light from said single fluorescent light tube in a plurality of different directions, at least four or more reflectors being positioned around said single fluorescent light tube, each said reflector being: (1) a housing having an open end, a reflective surface within said housing directing illumination from a source of illumination within the housing outwardly through the open end of the housing, (2) said housing having two opposite side walls each with an aperture therein, said support bar and said single fluorescent light tube passing through the apertures in each of the two side walls, said side wall apertures being such that they position the fluorescent tube in position to function as the source of illumination for providing light rays which the reflective surface will now direct outwardly from the open end of the housing, said apertures of the housing having a plurality of notches around the periphery thereof, said support bar being positioned in one set of notches and said housing being movable to position said support bar in different sets of notches around the periphery of the apertures so that the reflector housing will have its open end pointed in a plurality of different directions around a 360° arc.
Claim 2
Dependent Claim 301 words
A light fixture capable of directing light in several different directions, said light fixture comprising: (a) a support structure for a single fluorescent tube, said support structure being (1) two end plates having positioned thereon means for receiving the ends of a fluorescent light tube, (2) a support bar positioned between said two end plates and rigidly holding the two end plates in position, (3) a single fluorescent light tube positioned between the two end plates in its tube end receiving means and in a parallel relationship with the support bar, (b) a plurality of individual adjustable reflectors for directing light from said single fluorescent light tube in a plurality of different directions, at least four or more reflectors being positioned around said single fluorescent light tube, each said reflector being: (1) a housing having an open end, a reflective surface within said housing directing illumination from a source of illumination within the housing outwardly through the open end of the housing, (2) said housing having two opposite side walls each with an aperture therein, said support bar and said single fluorescent light tube passing through the apertures in each of the two side walls, said side wall apertures being such that they position the fluorescent tube in position to function as the source of illumination for providing light rays which the reflective surface will now direct outwardly from the open end of the housing, said apertures of the housing having a plurality of notches around the periphery thereof, said support bar being positioned in one set of notches and said housing being movable to position said support bar in different sets of notches around the periphery of the apertures so that the reflector housing will have its open end pointed in a plurality of different directions around a 360° arc.
Claim 3
Dependent Claim 30 words
A light fixture as set forth in claim 1 wherein said housing is made in two parts hinged together at one side and releaseably fastened together at its opposite side.

References Cited (Backward Citations)

US4298909A Cited
US4302800A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-06-20 1986-12-20 1987-06-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-06-20 1990-12-20 1991-06-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-06-20 1994-12-20 1995-06-21 $7700.00 Window Closed / Lapsed

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