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Publication numberUS3001001 A
Publication typeGrant
Publication dateSep 19, 1961
Filing dateJun 2, 1958
Priority dateJun 2, 1958
Publication numberUS 3001001 A, US 3001001A, US-A-3001001, US3001001 A, US3001001A
InventorsJohn T Bibb
Original AssigneeTok Products Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Light fixture for suspended grid ceiling
US 3001001 A
Images(3)
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Description  (OCR text may contain errors)

Sepi. 19:1961 J. T. BIBB LIGHT FIXTURE FOR SUSPENDED GRID CEILING Filed June 2, 1958 3 Sheets-Sheet 1 Joy/v 7.29/55,

INVENTOR.

v fifrazvaa Sept. 19, 1961 J. T. BIBB 3,001,001

LIGHT FIXTURE FOR SUSPENDED GRID CEILING Filed June 2, 1958 3 Sheets-Sheet 2 Fla. 2.

.Fl'z 4.

JOHN [5/55, IN V EN TOR.

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Sept. 19, 1961 J. T. BIBB LIGHT FIXTURE FOR SUSPENDED GRID CEILING 3 Sheets-Sheet 3 Filed June 2, 1958 INVENTOR. JOA A/ 71 5/58 r4 prroeA/a s United States PatentC LIGHT FIXTURE FOR SUSPENDED GRID CEILING John T. Bibb, La Canada, Califl, assignor to Tok-Products Co., Los Angeles, Calif., a corporation of California Filed June 2, 1958, Ser. No. 739,425 11 Claims. (Cl. 174-71) This invention relates to a suspended ceiling and more specifically to a light installation for such a ceiling.

It has heretofore been the practice to construct ceilings using various types of grid installations wherein squares ing fixtures have presented a difiicult' problem.

It is, therefore, an object of this invention to provide novel means for installing lights in a suspended ceiling.

It is still a further object of this invention to provide such means which are extremely economical and easily installed to avoid aflecting the cost of installation of such a ceiling.

It is still a further object of this invention to provide wireways positioned above the ceiling which strengthen the ceiling structure as well as shield the Wiring and preserve the standard modular size of the gridpattern.

It is still a further object of this invention to provide suitable means by which a lighting fixture may be suspended from the ceiling at any point along one of the runners or at an intersection of runners and which also shields the wiring.

Other objects and advantages will be readily apparent from the following description. a

In the drawings:

FIGURE 1 is a perspective view of ing embodying this invention.

FIGURE 2 is asection takenalong URE 1.

FIGURE 3 is a section taken along line 3-3 of FIG- URE 2. a

aseg'ment 'of ceil- FIGURE 4 is a section taken along line 4 -4 of FIG-1' URE 2.

FIGURE 5 is a perspective view of a half of the wire" box.

FIGURE 6 is a perspective view of a modified form FIGURE 1 and comprises spaced parallel runners 10 and 12, which are inverted T-shaped and may be formed from extruded aluminum. These runners are interconnected by runners such as 14 in this embodiment normal to runners 10 and 12 and of similar construction and extended between runners 10 and 12. A clip 16 connects runner 14 to a similar runner 18 on the other side of. runner 12 through which the clip passes. The bottom:

line 2-2 of FIG- alongline 7-7 of no flanges of the T-shaped runners form a support for ceiling forming members 20, in this instance an acoustical board. In this manner the complete ceiling may be formed as squares similar to 20 supported between runners 10 and 12 and spaced parallel runners such as 14.

The ceiling thus formed is suspended by suitable wires 22 from the framework of the building. The wires are suitably spaced over the area of the ceiling and are at- V tached to the runners 10 and 12 by means of clips 24 bolted to the runners. Such a ceiling is well known in the art and is rather briefly described to aid in understanding the description of the lighting system with which this inventionis concerned.

A U-shaped channel '26 has on its underside a groove formed receiving the upper edge of the inverted T-shaped runner 10. A depending flange 28 is bolted to the runner by bolts 30. A cover 32 is provided at the upper end of channel 26 forming a housing for the electrical Wiring 34.

The cover 32 terminates at the split wire box 36. This box may be positioned anywhere along the runner 10 even at the point of intersection with runners 1 4 and38.

The box 36 is formed of two separate halves 40 and 42. The top of each half has a pair of opposed cars 44 and 46 by means of which the two halves are held to gether. The top 48 of the wire box thus formed is above the open portion of U-shaped channel 26 so that the wires 34 pass out of the channel 26 into the wire box 36. Each half 40 and 42 has notches such as 50, 52 and 54 cut therein on either side so that they will fit flush against the runner 10, flange 28 and channel 26. The top 32 terminates at and is flush with the box 36 at the junction of the two halves. Each half at its lower extremity rests upon the ,inturned flanges of the T-shaped runners. ,Each half also has formed therein a tunnel such as 56 which terminates flush with the runner 10, flange 28 and channel 26, being notched as are the side walls of; each half at 50, 52 and 54. The tunnel thus formed on either side of the runner 10 receives the cross runners 14 and 38 permitting the wire box to be stationed at an intersection of runners if desired.

The tunnels 56 also support the wires 34 in wire box 36 over which they are trained after leaving channel 26. As best seen in FIGURES 1 and 4 the corners of the wire box 36 extend beyond the flanges of the runners permittirug wires 34 to pass below'the runners through spaces 58. At each corner the wire box 36 has an ear bit through which the wire box is bolted to the support box 62 for the light fixture 64. The wires 34 pass into box 62 through suitable openings therein aligned with openings 58. The light fixture is then wired as is Well known in the art. In these drawings the light fixture represents one-half of a fixture for a fluorescent light although any suitable light fixture may be used.

T 0 add rigidity to thestructure a cross bolt 65 may be provided adjacent the underside or base of the Wire box 36. This bolt passes through a suitable bore in runner 10 similar to bore 66 in runner 12 and is suitably held from the exterior of the wire box halves.

A modification of the runner 10 and channel 26 may be utilized wherein the two parts are extruded as an integral piece in place of bolting same together. i

In operation a U-shaped channel 26 is mounted upon above the wire supporting member-or runner 26a. halves of'the wire-box are secured together-by rivets 74 a-runner' 10 wherever it'is desired to mount a light fixture.

A pair of wire box'halves 40'and-42 ai'epositioned begiven a similardesignation with the addition o'f-the exponent a. It is apparent thatithis-embodimeut-difiersprimarily from that previously described-:in the formation of the wire box .68. The box is formed of-complementary halves 70 and 72 which extend from within light box 62 1, which ha a suitable aperture therein to receive same, The

incomplementary ears 76. The box thus formed has a:gooseneck "7 8 atits upper extremity'provided withsuitable grooves to'receive beads 80011 .the .upper edge of runner 26a. Covers 32a-on eitherside of gooseneck 78 fit snugly thereagainst so that wire 34a supported in channel 26a may pass through wire box 68 downwardly into light box 62a which is bolted-onto the lower flange of a runner 10a..

In this embodiment channel 26a has a series-of depending flanges 82punched therefrom which abut one side or the upstanding legof runner 10a and a series of loops 84 punched therefrom which support set screws 86 which bear against the other sideeof .said leg-toclamp channel 7 26a thereon. An enlarged bead 88 is formed at the extremity of the upstanding leg runner 10a to provide a more secure junction.

While, what hereinbefore has been described as the preferred-embodiment of thisinvention, it is readily ap-.

parent that alterations and modifications can be resorted to without departing from the scope of this invention and such alterations and modifications areintendedtg be included within the :scopeof the appended claims.

' Iclaim: v V a V p l. Ina ceiling of the t ype having flanged runners supporting removable ceiling formingmerribers the combination of: a wire supporting member extending along one of said runner-s, a wire'box extending from the flange of said runner to said wire supporting member enclosing bination of: a wire supporting channel mounted on one 'of-said'runners, ahollow-wire 'box slotted to snuglyfit said runner, said box extending from the flange of said runner upwardly and over a portion of the top of said channel and cover means enclosing the portions of said channel projecting outside said wire box, the lower extremity of said box being open on the underside of said runner.

6. In a ceiling of the typehaving flanged runners supporting removable ceiling forming members the combination of: a U-shaped wire supporting channel having depending flanges receiving the upper portion of one of said runners, the'-upper'-edges of said channel having outtwar'dly projecting beads formed thereon, a Wire box having grooves therein {adapted to receive said beads securing said box-on said channel, said wire box extending downwardly from said channel and being open from the underside of saidrunner. I 7 l 7. In a ceiling-of the type vhaving flanged runners supporting removable ceiling forming members the combination of: a U -shaped wire supporting channel having depending flanges receiving the upper portion of one of T said'runners, the upper edges'of said channel having outwardly projectingbeads'formed thereon, a wire box hav-' inggrooves therein adaptedto receivesaid beads securing said box on said channel, said wire box extending down- 7 wardly fromsaid channel and being open from the una wire received from said wire supporting member to below said flange.

2. In a ceiling of the type having flanged runners'sup- 1 porting removable ceiling'forming members the combination of: an enclosed Wire supporting member mounted throne of said n1 nners; a hollow wire box extending from the flange so-fsaid-runnerand enclosing a portion or said wiresupporting member, means -.eommunicating the inderside of said runner and cover plates grooved to receive said. beads on said channel and abut either sideot said wire :boxto completely enclose a wire reeved through said channel and said Wire box so that said wire is :ac-.

cessiblebeneathsaid ceiling.

8. In a ceiling .ofthe type having flanged runners supporting'removable ceiling forming members the combination of: a- U-s'haped wiresupporting channel having depending flanges receiving the upper portion of one of 7 said runners, the upper .edges of said channel having outwardly projecting beads formed thereon, a wire box having grooves therein adapted-to receive said beads securing said boxojn said channel, said wire box extending downwardly fromsaid channeland being open'frorn the underside of said runner, and cover plates grooved to receive said beads 'onsaid channel and abut either side'of said wire box to completely enclose a wire reevedthrough :said channel and said wire box so that said wire is accessible beneath said ceiling,-said wire-box being formed of complementary halves facilitating fabrication.

9. In a ceiling of thetype having flanged runners supporting removable ceiling forming members the combination of: la -wire supporting member having asubstan- V tially continuous opening along one side, clamping means on said supporting member along the edges of said opening, means for mounting said supporting member uponone of said runners, .a hollow wire box having tremityand having therother extremity accessible from terior, of said wire box with the interior of thatportion... of the wire supporting member enclosed within said box..

3,. In a ceiling .o f'the type having flangedrunners sup porting removable ceiling forrning members the combination of: a wire supporting channel-mounted on one of said runners, .a hollow wire box slottedto snugly fit said runner, saidbo-x extending from the flange of said runnerjupwardly and cover apontion .of the topof said channel.' Y 7 4. In a ceilingof the 'type'having flanged runners supporting removable ceiling forming :rnenrbersthe combination of: a wire supporting channel mounted on one of I said runners, a hollow wire box'slotted to snuglyfit said runner, said box'extendingirom the-flange of said runner upwardly and over a portion'ofthe top of said chantnelland cover means enclosing-the pontionsof'saidchannel projecting outsidesaid wire box.

5.: In a ceiling of the :type having .flang'ed supporting removable ceilingforming members theecommeans for engaging said clamping means at' one exbelow the flanged runners and cover plates adapted'to engage'said clamping means and abut either side of said box .to close off said opening. i V I 10. In a ceiling of the type having flanged runners supporting removable ceiling forming panels the" corn-.1 bination of: alongitudinal wire, enclosing member having' a substantially continuous opening along one side,

15 .stantially acontinuous :op'ening :along Lone aside, clamping means for mounting said enclosing member upon one of said runners, a hollow wire box having attachment means for positioning said box in communication with said substantially continuous opening at one extremity of I said box and having-the other extremity accessible from 7 below the flanged runners and cover plates adapted 'to bereceived bysaid-enclosing member to close on said substantially -continuousopening at either side of said box.

1 1. {In a ceiling ofthe type having flanged runners supporting removableceiling forming members the com.- bination of: va wire supporting member having a sub.-

means on said supporting member along the edges of said opening, means for mounting said supporting member upon one of said runners, a hollow wire box having means for engaging said clamping means at one extremity and having the other extremity accessible from below the flanged runners and cover plates adapted to engage said clamping means and abut either side of said box to close 011 said opening; a lighting fixture attached to one of said runners on the opposite side thereof from said wire supporting member.

References Cited in the file of this patent UNITED STATES PATENTS Lutz Apr. 6, Rein Nov. 20, Murray Oct. 8, Richardson July 21, Ober Sept. 22, Wakefield Nov. 17, Tubbs May 28,

CERTIFICATE OF CORRECTION Patent Nb, 3,001,001-

September 19, 1961 John B -ibb It is hereby certified that error appears in the above numbered patentrequiring correction and that the said Letters Patent should read as "corrected below.

In the grant, lines 2 and 12, and in printed specification, lines-.3 and 4, for each occurrence read Lek-Products C0.

the heading to the "Tab-Products C0,",

Signed'and sealed this 6th day of February 1962,

SEAL) Attest:

ERNEST W. SWIDER I DAVID L. LADD Attesting Officer Commissioner of Patents UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent Ne. 3,001,001 September 19, 1961 John T. B-ibb It is hereby certified that error appears in e-the above numbered patentrequiring correction and that the said Letters Patent should read as "corrected below.

In the grant, lines 2 and 12, and in the heading to the printed specification, lines.3 and 4, for "T0k-Products C0,", each occurrence, read Lek-Products C0.

Signed'and sealed this 6th day of February 196.2

(SEAL) Attest:

ERNEST W. SWIDER DAVID L. LADD Attesting Officer Commissioner of Patents

Patent Citations
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US2793699 *Apr 11, 1956May 28, 1957Tubbs Howard AAdapter for well casing
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3160244 *Apr 11, 1960Dec 8, 1964Kushner Leonard HBuilding parttion systems
US3184588 *Sep 12, 1962May 18, 1965Celotex CorpCeiling mounted fluorescent lighting system
US3263022 *Oct 4, 1963Jul 26, 1966Sunbeam Lighting CompanyWire-way assembly combination for light fixtures on suspended ceilings
US3275817 *Aug 26, 1964Sep 27, 1966Stephen W LindheimFramework structures for suspended ceiling and lighting systems
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US3359697 *Mar 5, 1964Dec 26, 1967Luminous Ceilings IncSuspended ceilings
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Classifications
U.S. Classification174/71.00R, 52/669, 362/148, 174/58, 174/63, 52/220.6, 174/500, 52/28
International ClassificationH02G3/20, E04F17/08, H02G3/00, F21V17/00
Cooperative ClassificationF21V17/00, E04F17/08, F21Y2103/00, H02G3/00, H02G3/20
European ClassificationE04F17/08, H02G3/20, H02G3/00, F21V17/00