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Publication numberUS3182187 A
Publication typeGrant
Publication dateMay 4, 1965
Filing dateJan 14, 1963
Priority dateJan 14, 1963
Publication numberUS 3182187 A, US 3182187A, US-A-3182187, US3182187 A, US3182187A
InventorsDon L Gellert
Original AssigneeSilvray Litecraft Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Lighting fixture for sloping ceilings
US 3182187 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

May 4, 1965 D. L. GELLERT LIGHTING FIXTURE FOR SLOPING CEILINGS Filed Jan. 14, 1963 INVENTOR T R S V. 1 L N E R 6 0 T L T W f .locate the axis of the housing in vertical position.

United States Patent 3,182,187 LIGHTING FIXTURE FGR SLOPING CEILINGS Don L. Gellert, Pararnus, Ni, assignor, by Inesne assign= ments, to Silvray-Litecraft Corporation, Passaic, N.J., a corporation of New York Filed Ian. 14, 1%3, Ser. No. 251,126 4 Claims. (Cl. 240-78) This invention relates to an improved recessed lighting fixture for a sloped ceiling.

The usual recessed ceiling lighting fixture is arranged with its axis extending vertically, for mounting upon a horizontal ceiling. When the ceiling is sloped, the fixture must be modified for mounting purposes, if the fixture is to be arranged with its axis extending vertically; In the past, constructions had to be improvised in order to adapt recessed fixtures to sloped ceilings, resulting in excessive cost of the fixtures and often resulting in bad lighting design.

An important object of the invention is to provide a recessed fixture of simple design, which can be readily mounted in ceilings of various slopes and which will insure proper light transmission through the ceiling opening.

Another object of the invention is to provide a recessed ceiling fixture for sloped ceilings, which can be readily adjusted so as to comply with the slope of a particular ceiling.

In accordance with the preferred embodiment of the invention, the fixture includes a housing having an upstanding axis and peripheral wall and a bottom opening and receiving a lamp. A part-spherical, downwardly-opening socket is fixed to the housing below and covering the bottom opening. The socket has a top opening registering with the housing bottom opening. Opposing ears are fixed to the housing and depend therefrom outside and below the socket. A hearing having open ends and a partspherical peripheral wall is pivotally mounted between the ears below the socket and extends frictionally turnably into the socket.

The bearing has means, which may include a face ring, for mounting it in adjusted turned position in the opening of the sloped ceiling with the housing located above the ceiling. The ears are then turnable about their pivots to The housing, socket and bearing together define a peripherally closed passage for transmission of light from the lamp to below the ceiling.

Other objects and advantages of the invention will be come apparent from the following description, in conjunction with the annexed drawing, in which a preferred embodiment of the invention is disclosed.

In the drawing,

FIG. 1 is a perspective view of the fixture in accordance with this invention.

FIG. 2 is a sect-ion on line 2-2 of FIG. 1, showing the fixture mounted in a ceiling.

The drawings are substantially to scale of a Working model of the invention, and reference is made to the drawing to complete this disclosure.

Upon reference to the drawing in detail, it will be noted that it shows a lighting fixture 16 for a sloped ceiling Said sloped ceiling 9 has an opening 8 which is optionally circular and a mounting ring 7 received within said opening 8. Said ring '7 is conventional, and as illustrated is cylindrical with an upstanding top flange do which overlies the top of the ceiling 9. Said ring 7 has upstanding retaining pins 6.

The fixture 10 comprises a housing 11 which is to be mounted so that its axis is upstanding and a peripheral wall 12 which is optionally cylindrical. Wall 12 may have ventilating holes 17. Junction box 13 is mounted on the top of the housing 11 and supports a socket 14 3,182,137 Patented May 1, 1955 which extends downwardly through the top wall of the housing into the interior thereof to receive a lamp 15. Any suitable cable 16 may be led into the junction box 13. These various fixture parts are conventional and are not described in detail.

Housing 11 has a bottom wall 13 in the form of an in-turned annular bottom flange, having a central opening 19 serving as the bottom opening of the fixture. Lamp 15 is centered on opening 19 so that the light from lamp 15 can be transmitted downwardly through opening 1%.

A part-spherical, but less than hemi-spherical, downwardly-opening socket 261 is fixed to housing 11 below and covering bottom wall 18. Specifically, the socket 20 has a top opening 21, around which is an upstanding short cylindrical flange 22. Said flange 22 connects with a further top, inwardly turned, annular flange 23. This flange 23 is fixed by welding or other suiable mean to an overlying annular plate 24. This plate 24 optionally extends outwardly of housing 11 and has an outer peripheral cylindrical, upstanding flange 25. The plate 24 is fixed by metal screws 27 to housing bottom wall 18. The flange 23 and plate 24 have co-extensive openings which together serve as the top opening 26 of socket 213, which is in registration with housing bottom opening 19. The bottom edge 29 of socket 211 is preferably oriented at an angle other than degrees to the vertical, or in other words the plane of bottom edge 29 is inclined, as indicated by the broken line 3% Opposing ears 31 are fixed to housing 11 and depend therefrom outside and below socket 241'. Specifically, each said ear 31 has a top horizontal flange 32 fixed to the bottom of plate 24 outwardly of its central opening. The ear 31 is curved outwardly downwardly at 31a to conform to the curvature of socket 2t) and then depends generally vertically at 31b below the lower edge 29 of socket 20. The two ear portions 31b are diametrically opposed and have bottom Opposed bearing openings 32:.

Bearing 49 has a part-spherical, truncated peripheral wall conforming in curvature and diameter to socket 20. Bearing 40 extends between ear portions 31b. Lateral pivots 41 extend turnably through openings 33 and are fixed to the opposite sides of bearing 40, so that bearing 46 is pivotable' upon the common pivot axis of said pivot pins 41. Said bearing 41 extends frictionally turnably into socket 20.

The upper end of bearing 40 has an inturned, planar, annular flange 42 which defines a top opening 43 of bearing 49. The bottom end of bearing 4i) has an out-turned peripheral flange 44. This is fixed, by welding or the like, to the top face of an annular plate 45 whose central opening 46 serves as the bottom opening of bearing 40. This opening as is preferably of diameter somewhat comparable to that of opening 25. Plate 45 and flange 42 are preferably parallel to each other.

Any suitable means may be provided for releasably locking bearing 40 in selected position relative to socket 20. In the embodiment shown, bearing 40 is provided with a vertically extending slot 47, extending almost the full height of bearing 40. Slot 47 is centered between bearing openings 33. Screw 48 extends through an open ing of socket 20, adjacent socket lower edge 29, and extends slidably through slot 47. Screw 48 has a head 48a against the outside of socket 20. A wing nut 49 is threaded onto screw 48 on the inside of and against housing it). Accordingly, nut 49 is accessible through the ceiling opening. By loosening nut 49, bearing 40 may be turned on its pivot pins 41 to adjusted position, and screw 49 may then be tightened. Any other suitable tensioning means may be utilized in place of nut 49.

Any suitable means may be provided for mounting the bearing 40 within the ceiling opening. In the embodiment shown, the plate 45 is received within groove 7a in the bottom of ring 7. Spring clips 50 are secured at their bottom by screws 51 to the peripheral wall of bearing 40. These springs 50 are outwardly bowed, at 59a, intermediate their ends. As a result, when the bearing is pushed upwardly through the ceiling opening, the respective clip portions 50a. engage over the tops of the respective elements 6, so as to retain the fixture in place. It will be apparent that any other suitable mounting means may be provided.

Ordinarily, the ceiling 9 will be sloped in only one direction, as shown in the drawing. The ring 7 and clips 59 are located in selected turned position such that the plane transverse to the pivot pins 41 is vertical. Also, the plane of socket edge 29 is oriented in generally the same sense as the slope of ceiling 9. Slot 47 is located so that it is in the plane transverse to the pivot pins 41. It is then a simple matter to turn the socket until the axis of the housing extends truly vertically, and then to tighten the nut 49 to hold the parts in proper position.

The drawing shows screw 48 at the upper end of slot 47, with bearing 40 thereby tilted so that at its upper end its peripheral wall is close to flange 23. In the other extreme position of screw 48 in slot 47, flange 44 is approximately horizontal but with bearing 40 remaining retained within socket 220.

As clearly shown in the drawing, the socket and bearing together define a peripherally closed passage for transmission of light from 15 through the ceiling opening to below the ceiling.

While a preferred embodiment of the invention has been disclosed, and various possible changes, omissions and additions have been indicated therein, it will be apparent that various other changes, omissions and additions may be made in the invention without departing from the scope and spirit thereof.

What is claimed is:

1. Lighting fixture for a sloped ceiling comprising a housing having an upstanding axis and peripheral wall and a bottom opening and adapted to receive a lamp, a part-spherical, downwardly-opening socket fixed to said housing below and covering said bottom opening and having a top opening registering with said housing bottom opening, opposing ears fixed to said housing and depending therefrom outside and below said socket, a bearing having open ends and a part-spherical peripheral wall, pivot means pivotally mounting said bearing between said ears below said socket with said bearing extending frictionally turnably into said socket, said pivot means having an axis which is transverse to said housing axis, and

means on said bearing for mounting it in adjusted turned position in the opening of a sloped ceiling with said housing above said ceiling, said ears being turnable about their pivots to locate the axis of said housing in vertical position, said housing, socket and bearing together defining 4 space of said bearing, and means on said stud within said bearing for clamping said socket and said bearing together.

3. Lighting fixture for a sloped ceiling comprising a generally cylindrical housing having an upstanding axis and peripheral wall and a bottom wall having a bottom opening of reduced diameter and adapted to receive a lamp, a part-spherical, but less than hemi-spherical, downwardly opening socket below said housing, said socket having a top opening of approximately the same diameter as said housing bottom opening, means fixing the top of said socket to said housing bottom wall with said openings registering, the bottom edge of said socket being inclined when the axis of said housing is vertical, opposing ears on opposite sides of said socket, said ears having top extensions fixed to said housing bottom wall, said ears having portions extending below said socket and diametrically opposed and parallel to each other, a bearing in the form of a truncated part sphere of the same diameter and curvature as said socket extending frictionally turnably into said socket and extending below said socket, opposed means pivotally connecting said bearing to said ear portions, said bearing having a vertical slot centered relative to the pivots, a stud on said socket at its lowest point and extending slidably through said slot and into the interior of said bearing, means on said bearing below said socket for mounting said bearing in adjusted turned position in the opening of a sloped ceiling with said housing above said ceiling, said ears being turnable about their pivot means to locate the axis of said housing in vertical position, and means within said bearing and cooperating with said stud for releasably clamping said bearing to said socket in the adjusted position of said fixture, said housing, socket and bearing together defining a peripherally closed passage for transmission of light from said lamp to below said ceiling.

4. Lighting fixture for a sloped ceiling comprising a housing having an upstanding axis and a peripheral wall and a bottom opening and adapted to receive a lamp, the bottom portion of said housing being shaped to form a downwardly opening socket, opposing ears fixed to said housing and depending therefrom outside and below said socket, an open-ended bearing, pivot means mounting said bearing between said ears below said socket and extending frictionally turnably into said socket, said pivot means having an axis which is transverse to said housing axis, means on said bearing for mounting it in adjusted turned position in the opening of a sloped ceiling with said housing above said ceiling, said ears being turnable relative to said bearing to locate the axis of said housing in vertical position, said housing, socket and bearing together defining a peripherally closed passage for transmission of light from said lamp to below said ceiling.

Reterences Qited by the Examiner UNITED STATES PATENTS Re. 24,258 12/56 Burliuk et al 240-78 1,712,650 5/29 Clark 240-78 2,554,258 5/51 Lundquist 240-78 2,754,139 7/56 Frushour 285-261 X NORTON ANSHER, Primary Examiner,

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1712650 *Mar 10, 1928May 14, 1929Frederick P ClarkSafety device
US2554258 *Jan 22, 1949May 22, 1951Century Lighting IncElectric wall fixture having a universally mounted lamp
US2754139 *Oct 30, 1952Jul 10, 1956Allis Chalmers Mfg CoUniversally adjustable pipe coupling with exterior locking means
USRE24258 *Mar 7, 1956Dec 25, 1956 Recessed lighting equipment
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3381123 *Jul 5, 1966Apr 30, 1968Marvin Electric Mfg CoLighting fixture
US4037098 *Sep 5, 1975Jul 19, 1977B-Line Systems, Inc.Swivel connector
US4729080 *Jan 29, 1987Mar 1, 1988Juno Lighting, Inc.Sloped ceiling recessed light fixture
US5124901 *Jul 11, 1991Jun 23, 1992Thomas Industries Inc.Sloping ceiling adapter for recessed lighting
US5823664 *May 29, 1996Oct 20, 1998Hubbell IncorporatedRecessed lighting fixture
US6402112Jun 30, 2000Jun 11, 2002Genlyte Thomas Group LlcAdjustable mechanism with locking brake
US7036953 *May 31, 2002May 2, 2006Irwin KotovskyMethod and apparatus for lighting with a one-piece panel having a plurality of holes
US7303314Oct 13, 2005Dec 4, 2007Genlyte Thomas Group, LlcAdjustable trim for sloped ceiling recessed downlight
US7484866May 9, 2006Feb 3, 2009Genlyte Thomas Group LlcAdjustable lighting fixture for sloped ceiling
US7530705Nov 16, 2007May 12, 2009Genlyte Thomas Group LlcRotatable lamp with braking mechanism
US7549780Feb 16, 2007Jun 23, 2009Canlyte, Inc.Recessed lighting fixture
US7559677Sep 30, 2007Jul 14, 2009Genlyte Thomas Group LlcRecessed luminaire adjustment mechanism
US7625105Sep 18, 2007Dec 1, 2009Genlyte Thomas Group, LlcRelamping cartridge assembly
US7654705Jul 22, 2005Feb 2, 2010Genlyte Thomas Group LlcRecessed fixture with hinged doors and rotatable lamp
US7658517Nov 16, 2007Feb 9, 2010Genlyte Thomas Group, LlcHinged doors for recessed light fixture
US7673842Jul 31, 2006Mar 9, 2010Koninklijke Philips Electronics, N.VCaptive retaining spring
US7784754Dec 8, 2005Aug 31, 2010Genlyte Thomas Group LlcAdjustable hanger bar assembly with bendable portion
US7874708Jun 26, 2007Jan 25, 2011Genlyte Thomas Group, LlcT-bar mounting system
US7993037Aug 27, 2008Aug 9, 2011Koninklijke Philips Electronics N.V.Recessed light fixture with a movable junction box
US8066413Dec 10, 2009Nov 29, 2011Genlyte Thomas Group LlcRecessed fixture with hinged doors and rotatable lamp
US8201962Mar 11, 2008Jun 19, 2012Genlyte Thomas Group LlcRecessed downlight fixture frame assembly
US8297804Jul 16, 2009Oct 30, 2012Koninklijke Philips Electronics N.V.Recessed light fixture having integrally formed mounting tracks
DE4036229A1 *Nov 14, 1990May 21, 1992Ansorg Lichttechnik GmbhLeuchte
DE4111578A1 *Apr 10, 1991Oct 15, 1992Trilux Lenze Gmbh & Co KgEinbaustrahler
Classifications
U.S. Classification362/366
International ClassificationF21V21/04
Cooperative ClassificationF21S8/026, F21V21/04
European ClassificationF21S8/02H, F21V21/04