US4803603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plaster frame
Assignee: Thomas Industries Inc
•
Filing: 1988-02-16
•
Granted: 1989-02-07
•
Expires: 2008-02-16
Abstract
Abstract A plaster frame or base for recessed lighting fixtures has hanger bar receiving corners which are bendable to accommodate parallel or perpendicular axis orientation relative to ceiling joists or suspension grids. The frame spans the space between a pair of hanger bars and its corners have a plurality of mountings to accommodate different types of hanger bar such as flat horizontal, flat vertical, and adjustable interlocking hanger bars. The frame is preferably a rectangular metal plate with a flat base having upstanding side flanges, a fixture receiving aperture through the base between the flanges having a depending skirt or collar to surround and mount the fixture, mountings on the base for a junction box adjacent the aperture, and bendable hanger bar securing corners. The plate is sufficiently narrow to fit through the conventional ceiling aperture for the fixture.
Inventors
- 👤 Douglas W. Carson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:44
CPC Classifications
F; F21; F21S; F21S2/00; F21V; F21V21/00; F21V21/02; F21V21/04
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
55 words
A plaster frame for recessed lighting fixtures which comprises a flat metal plate, an aperture through the plate, a collar depending from the aperture, and bendable corners on the plate swingable from axial to transverse positions and constructed and arranged to receive hanger bars for mounting the frame in axial and perpendicular orientations between joists.
Claim 2
Dependent Claim
55 words
A plaster frame for recessed lighting fixtures which comprises a flat metal plate, an aperture through the plate, a collar depending from the aperture, and bendable corners on the plate swingable from axial to transverse positions and constructed and arranged to receive hanger bars for mounting the frame in axial and perpendicular orientations between joists.
Claim 3
Dependent Claim
58 words
A plaster frame for recessed lighting fixtures which comprises a generally rectangular metal plate having an apertured fixture receiving flat base with upturned side flanges, corners on the base swingable on said flanges from axial to transverse positions and means on said corners for selectively receiving different types of hanger bars to mount the frame between building joists.
Claim 4
Dependent Claim
58 words
A plaster frame for recessed lighting fixtures which comprises a generally rectangular metal plate having an apertured fixture receiving flat base with upturned side flanges, corners on the base swingable on said flanges from axial to transverse positions and means on said corners for selectively receiving different types of hanger bars to mount the frame between building joists.
Claim 5
Dependent Claim
104 words
A universal plaster frame for recessed lighting fixtures adapted for insertion through an opening sized to receive the fixture and for mounting axially parallel or perpendicular to ceiling joists on flat horizontal, flat vertical, and adjustable interlocking types of hanger bars which comprises a plate having a lighting fixture receiving aperture surrounded by an integral depending collar, upturned flanges on two sides of the plate, isolated corner portions on the plate having supports for any of such types of hanger bars and hinges connecting the corner portions with the flanges to selectively position the hanger bar supports to accommodate the axial and perpendicular mountings.
Claim 6
Dependent Claim
104 words
A universal plaster frame for recessed lighting fixtures adapted for insertion through an opening sized to receive the fixture and for mounting axially parallel or perpendicular to ceiling joists on flat horizontal, flat vertical, and adjustable interlocking types of hanger bars which comprises a plate having a lighting fixture receiving aperture surrounded by an integral depending collar, upturned flanges on two sides of the plate, isolated corner portions on the plate having supports for any of such types of hanger bars and hinges connecting the corner portions with the flanges to selectively position the hanger bar supports to accommodate the axial and perpendicular mountings.
Claim 7
Dependent Claim
18 words
The frame of claim 3 wherein the corner portions have bases and flanges with hanger bar receiving means.
Claim 8
Dependent Claim
20 words
The frame of claim 3 wherein the corner portions swing from axial alignment with the plate to outturned lateral positions.
Claim 9
Dependent Claim
14 words
The frame of claim 3 including severable bridges connecting the corners to the plate.
Claim 10
Dependent Claim
30 words
The frame of claim 3 including a platform on the plate at one side of the aperture and means for mounting a conduit box on the platform between the flanges.
Claim 11
Dependent Claim
32 words
The frame of claim 3 wherein the plate is rectangular, the flanges are on the long sides of the plate and the ends of the plate are narrower than the inner portions.
Claim 12
Dependent Claim
18 words
The frame of claim 8 wherein the ends of the plate have hanger bar tracks between the corners.
Claim 13
Dependent Claim
15 words
The frame of claim 3 wherein the plate is a punched and stamped metal piece.
Claim 14
Dependent Claim
15 words
The frame of claim 3 wherein the hanger bar supports slidably receiving the hanger bars.
Claim 15
Dependent Claim
28 words
The frame of claim 2 wherein the corners have flat base portions and upstanding flange portions connected to the flanges and swingable thereabouts from axial to lateral positions.
Claim 16
Dependent Claim
14 words
The frame of claim 2 wherein the plate is a one piece metal stamping.
Claim 17
Dependent Claim
26 words
The frame of claim 2 wherein the base has a platform area alongside the aperture and means on the platform for anchoring a conduit box thereon.
Claim 18
Dependent Claim
16 words
The frame of claim 14 wherein said means for anchoring are tangs carried from the base.
Claim 19
Dependent Claim
23 words
The frame of claim 12 wherein the base portions of the corners are connected to the base of the plate by severable bridges.
Claim 20
Dependent Claim
42 words
A recessed lighting fixture assembly including the frame of claim 2 having a fixture can anchored in the aperture of the frame, a conduit box anchored on the flat base of the frame and an electrical conduit connecting the box and can.
Claim 21
Dependent Claim
24 words
The frame of claim 1 including tabs bent from the plate around the collar for receiving fasteners to secure the fixture in the collar.
References Cited (Backward Citations)
US3422261A
Cited
US3700885A
Cited
US3755667A
Cited
FR2383394A1
Cited
JPS54120984A
Cited
US4293895A
Cited
US4313154A
Cited
US4336575A
Cited
US4408262A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-07 | 1992-08-08 | 1993-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-07 | 1996-08-08 | 1997-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-07 | 2000-08-08 | 2001-02-07 | $7700.00 | Window Closed / Lapsed |