US3877601A - Floor box - Google Patents

Floor box Download PDF

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US3877601A
US3877601A US340276A US34027673A US3877601A US 3877601 A US3877601 A US 3877601A US 340276 A US340276 A US 340276A US 34027673 A US34027673 A US 34027673A US 3877601 A US3877601 A US 3877601A
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section
edge
sides
outs
knock
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US340276A
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Thomas J Evans
William Walker
Edward E Hall
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Butler Manufacturing Co
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Textron Inc
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Assigned to BUTLER MANUFACTURING COMPANY, A CORP. OF DE reassignment BUTLER MANUFACTURING COMPANY, A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: TEXTRON INC.
Assigned to MORGAN GUARANTY TRUST COMPANY OF NEW YORK reassignment MORGAN GUARANTY TRUST COMPANY OF NEW YORK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BUTLER MANUFACTURING COMPANY
Anticipated expiration legal-status Critical
Assigned to BUTLER MANUFACTURING COMPANY reassignment BUTLER MANUFACTURING COMPANY SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CERTAIN BANKS AND MORGAN GUARANTY TRUST COMPANY
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02Details
    • H02G3/08Distribution boxes; Connection or junction boxes
    • H02G3/081Bases, casings or covers

Definitions

  • This invention in general, relates to electrical under floor distribution systems and, in particular, relates to an improved floor box for use in such systems.
  • the principal object of the invention is to provide a floor box structure which permits manufacture by that a pre-galvanized steel strip is fed into a multi-stage progressive die and a box is ejected with each stroke of the die press.
  • the invention contemplates a floor box structure which provides for fabrication by feeding a pregalvanized strip into a progressive die which forms all of the parts of the box, makes the necessary bends and with each stroke of the press ejects a box which has all of its parts in position and is completely fabricated except for tapping cover-receptacle lugs andfor spot welding of corner overlaps.
  • the design allows the most efficient use of progressive die technology and minimizes fabrication operations.
  • the principal advantage of the invention is that manufacturing cost is approximately one-third of the manufacturing cost of a comparable box madewith conventional techniques. This is brought about by (a) the elimination of a post-fabrication galvanizing operation (11) the elimination of at least one press operation and the ensuing elimination of material handling between such operations and (c) the elimination of the purchase orthe fabrication of separate leveling lugs and the welding of the lugs to the box.
  • FIG. 1 is a perspective view of a floor box constructed in accordance with the invention
  • FIG. 2 is a plan view of the floor box in FIG. 1;
  • FIG. 3 is a plan fragmentary view of a modification of the box of FIG. 2;
  • FIG. 4 is a blank layout for the box of FIG. 1.
  • the box is octagon in shape and has the bottom 1, the four long sides 2, 3, 4 and 5 and the four short sides 6, 7, 8 and 9.
  • the respective long sides and short sides are identical in construction.
  • the sides are integral with the bottom and extend upwardly generally perpendicular thereto.
  • the box is formed so that any two adjacent long sides extend perpendicular to each other and a short side extends therebetween, for example the long sides 2 and 3 are perpendicular and the short side 7 extends between the long sides at an obtuse angle which, in this instance, is approximately 135.
  • the same construction applies to any other pair of adjacent long sides and an interconnecting short side.
  • first section 10 and a second section 11.
  • the first section is L-shaped, having the leg 12 and a foot 13.
  • the section 11 is similarly shaped, having the foot 14 and the leg 15.
  • the edge 16 of the leg 12 abuts the edge 17 of the foot 14.
  • the edge 18 of the foot 13 abuts the edge 19 of the leg 15.
  • the bottom edge 20 of the foot 13 and the bottom edge 21 of the leg 15 are closely adjacent to the edge 22 of the bottom 1.
  • leveling lug 23 On the top of the foot 13 there is a leveling lug 23.
  • the lug is integral with the foot and extends outwardly, generally perpendicular to the foot.
  • Similar lugs 24, 25 and 26 are on the feet of the first sections of the respective short sides 8, 9 and 6.
  • the process of forming the leveling lugs includes the punching of apertures, for ex- The top'of the leg 2 ample, theaperture24a in thelug which are tapped in a separate operationlafter the box is ejected from the die press.
  • fastening lug 30 which extends out from the leg l2 and overlaps thefoot 1 4.
  • the lug 30 is spot welded to, the foot 14 in a separate operation. afterthe box isejected from the die press. Similar fastening lugs are on the legs of the first sections of theshort sides as indicated at 31, 32 and 33.
  • the long sides and 5 carry mounting lugs for supporting re :eptacles.
  • the long side 3 has theJugs 34 and 35 and the long side 5 has the lugs 36 and 37.
  • the lugs are integral with the respective sides and each lug extends inwardly of the box and generally perpendicular to its side.
  • the process of forming themounting lugs includes the punching of apertures, for example, the aperture 34a, which are subsequently tapped.
  • the other lugs have similar apertures.
  • the tapping of the 1ugs34-37 is preferably accomplished on the machine which taps the leveling lugs 23-26.
  • the box' is designed with only a single pair of mounting lugs.
  • these lugs are formed on an opposite pair of short sides, for example, lugs can be formed on the short sides 7 and 9. This is illustrated in FIG. 3 where it will be seenthat the foot 14 has a lug 38 which projects out.- wardly from the top edge. A similar lug. is provided on theshortside9.
  • the long sides.2and '4 have large knock-outs 40 and 41 while the long sides 3 and 5 have smaller knock-outs 42 and 43.
  • the bottom 1 hasseveral knock-outs 44 (see FIG. 2).
  • Knock-outs are conventional in shape and are formed in the progressive die. The location of the large knock-outs on the sides 2 and 4 is an important feature. When a large knock-out, say knock-out 40, is struck with a hammer for removal purposes, part of the force will be transferred to the adjoining short sides 6 and 7 through the lugs 30 and 33. The welds in the lugs will be put into compression and this will help to main tain the integrity of the weld.
  • FIG. 5 we have shown a layout of the blank for producing the box of FIG. 1.
  • the removal of metal to form the shape shown takes place in the various stages of the die. Also the various lugs are bent in the appropriate direction and the long walls formed upwardly as the strip progresses through the die.
  • the dotted lines 45 indicate the original width of the strip from which the box is formed. It will be observed that all parts of the box are confined within the original width. Thus, the strip can be cut to a minimum width and the box formed without any trimming of excess material. For example, if the mounting lugs 34-37 were to be formed on the long sides 2 and 4, the original strip would have to be increased by the length of each lug and a large amount of material removed to form the lugs.
  • a hollow, octagon-shaped floor box comprising:
  • each short side comprising first and second sections, the first section being an extension of one of the long sides and the second section being an extension of the other long side, also the first and second sections each being L-shaped and the edge of the leg of the first section abutting the edge of the foot of the second section and the edge of the foot of the first section abutting the edge of the leg of the second section;
  • a fastening lug on the top of the first section and extending outwardly therefrom and overlapping the second section and being spot welded thereto;
  • said bottom, said sides, said leveling, fastening and mounting lugs all being integral and made from pregalvanized metal and formed on a multi-stage progressive die.
  • a construction in accordance with claim 1 further including knock-outs on the bottom and knockouts on each of the long sides, the knock-outs on each long side which carries the fastening lugs being larger in diameter than the knockouts on the other long sides.
  • a hollow octagon-shaped fioor box comprising:
  • each short side comprising first leg of the second sections, the first section being an extension of one of the long sides and the second section being an extension of the other long side, also the first and second sections each being L-shaped and the edge of the leg of the first section abutting the edge of the foot of the second section and the edge of the foot of the first section abutting the edge of the leg of the second section;
  • a fastening lug on the top of the first section and extending outwardly therefrom and overlapping the second section and being spot welded thereto;
  • said bottom, said sides, said leveling, fastening and mounting lugs all being integral and made from pregalvanized metal and formed on a multistage progressive die.
  • a construction in accordance with claim 3 further including knock-outs on the bottom and knock-outs on each of the long sides, the knock-outs on each long side which carries the fastening lugs being larger in diame ter than the knock-outs on the other long sides.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)

Abstract

A floor box structure providing for the box to be made from pregalvanized steel strip worked to final shape in a multistage progressive die.

Description

United States Patent [191 Evans et al.
1 FLOOR BOX [75] Inventors: Thomas J. Evans, Parkersburg, W.
Va.; William Walker, Belpre, Ohio; Edward E. Hall, deceased, late of Parkersburg, W. Va., by Lena P. Hall, administratrix [73] Assignee: Textron Inc., Providence, RI.
[22] Filed: Mar. 12, 1973 [21] Appl. No.: 340,276
[52] U.S. Cl. 220/33; 220/394; 220/62 [51] Int. Cl. H02g 3/08; B65d 7/38 [58] Field of Search 220/3.23.94,
[56] References Cited UNITED STATES PATENTS Knight 220/394 Krantz 220/394 Apr. 15, 1975 1,761,398 6/1930 Knight 220/394 1,860,833 5/1932 Clayton 220/394 2,250,685 7/1941 Tiefenbacher et al 220/32 2,625,288 1/1953 Clark et al. 220/394 2,697,535 12/1954 Olson 220/3.2
FOREIGN PATENTS OR APPLICATIONS 499,795 3/1951 Belgium 220/32 487,015 10/1952 Canada 857,667 1/1961 United Kingdom 1,051,900 12/1966 United Kingdom 220/31 Primary Examiner--Wil1iam 1. Price Assistant Examiner-Stephen Marcus Attorney, Agent, or Firm-Frederick J. Olsson 1 1 ABSTRACT A floor box structure providing for the box to be made from pre-galvanized steel strip worked to final shape in a multistage progressive die.
4 Claims, 4 Drawing Figures PATENTEDAFR I 5 I975 SHEEI 1 [If 2 This invention, in general, relates to electrical under floor distribution systems and, in particular, relates to an improved floor box for use in such systems.
The principal object of the invention is to provide a floor box structure which permits manufacture by that a pre-galvanized steel strip is fed into a multi-stage progressive die and a box is ejected with each stroke of the die press.
The invention contemplates a floor box structure which provides for fabrication by feeding a pregalvanized strip into a progressive die which forms all of the parts of the box, makes the necessary bends and with each stroke of the press ejects a box which has all of its parts in position and is completely fabricated except for tapping cover-receptacle lugs andfor spot welding of corner overlaps.
The design allows the most efficient use of progressive die technology and minimizes fabrication operations. The principal advantage of the invention is that manufacturing cost is approximately one-third of the manufacturing cost of a comparable box madewith conventional techniques. This is brought about by (a) the elimination of a post-fabrication galvanizing operation (11) the elimination of at least one press operation and the ensuing elimination of material handling between such operations and (c) the elimination of the purchase orthe fabrication of separate leveling lugs and the welding of the lugs to the box.
The preferred-form of the invention will be described below in connection with the following drawingswherein:
FIG. 1 is a perspective view of a floor box constructed in accordance with the invention;
FIG. 2 is a plan view of the floor box in FIG. 1;
FIG. 3 is a plan fragmentary view of a modification of the box of FIG. 2; and
FIG. 4 is a blank layout for the box of FIG. 1. In FIG. 1, the box is octagon in shape and has the bottom 1, the four long sides 2, 3, 4 and 5 and the four short sides 6, 7, 8 and 9. The respective long sides and short sides are identical in construction. The sides are integral with the bottom and extend upwardly generally perpendicular thereto. The box is formed so that any two adjacent long sides extend perpendicular to each other and a short side extends therebetween, for example the long sides 2 and 3 are perpendicular and the short side 7 extends between the long sides at an obtuse angle which, in this instance, is approximately 135.The same construction applies to any other pair of adjacent long sides and an interconnecting short side.
With respect to short side 7 it will be noted that this comprises a first section 10 and a second section 11. The first section is L-shaped, having the leg 12 and a foot 13. The section 11 is similarly shaped, having the foot 14 and the leg 15. The edge 16 of the leg 12 abuts the edge 17 of the foot 14. Also, the edge 18 of the foot 13 abuts the edge 19 of the leg 15.
The bottom edge 20 of the foot 13 and the bottom edge 21 of the leg 15 are closely adjacent to the edge 22 of the bottom 1.
On the top of the foot 13 there is a leveling lug 23. The lug is integral with the foot and extends outwardly, generally perpendicular to the foot. Similar lugs 24, 25 and 26 are on the feet of the first sections of the respective short sides 8, 9 and 6. The process of forming the leveling lugs includes the punching of apertures, for ex- The top'of the leg 2 ample, theaperture24a in thelug which are tapped in a separate operationlafter the box is ejected from the die press. I
12 carries a fastening lug 30 which extends out from the leg l2 and overlaps thefoot 1 4. The lug 30 is spot welded to, the foot 14 in a separate operation. afterthe box isejected from the die press. Similar fastening lugs are on the legs of the first sections of theshort sides as indicated at 31, 32 and 33.
The long sides and 5 carry mounting lugs for supporting re :eptacles. Thus, the long side 3 has theJugs 34 and 35 and the long side 5 has the lugs 36 and 37. The lugs are integral with the respective sides and each lug extends inwardly of the box and generally perpendicular to its side. The process of forming themounting lugs includes the punching of apertures, for example, the aperture 34a, which are subsequently tapped. The other lugs have similar apertures. The tapping of the 1ugs34-37 .is preferably accomplished on the machine which taps the leveling lugs 23-26.
In situations where the under-floor specifications require floor boxes-of thetype where the receptacle is mounteddirectly on the cover plate, the box' is designed with only a single pair of mounting lugs. Preferably, these lugs are formed on an opposite pair of short sides, for example, lugs can be formed on the short sides 7 and 9. This is illustrated in FIG. 3 where it will be seenthat the foot 14 has a lug 38 which projects out.- wardly from the top edge. A similar lug. is provided on theshortside9.
The long sides.2and '4 have large knock- outs 40 and 41 while the long sides 3 and 5 have smaller knock- outs 42 and 43. The bottom 1 hasseveral knock-outs 44 (see FIG. 2). Knock-outs are conventional in shape and are formed in the progressive die. The location of the large knock-outs on the sides 2 and 4 is an important feature. When a large knock-out, say knock-out 40, is struck with a hammer for removal purposes, part of the force will be transferred to the adjoining short sides 6 and 7 through the lugs 30 and 33. The welds in the lugs will be put into compression and this will help to main tain the integrity of the weld. While the welds will be put in tension when the other long sides 3 and 5 are struck to remove the small knock- outs 42 and 43, the required force is much smaller than the force required for the large knock- outs 40 and 41 and so the tension stress on the welds is not objectionable.
In FIG. 5 we have shown a layout of the blank for producing the box of FIG. 1. The removal of metal to form the shape shown takes place in the various stages of the die. Also the various lugs are bent in the appropriate direction and the long walls formed upwardly as the strip progresses through the die.
In FIG. 5 the dotted lines 45 indicate the original width of the strip from which the box is formed. It will be observed that all parts of the box are confined within the original width. Thus, the strip can be cut to a minimum width and the box formed without any trimming of excess material. For example, if the mounting lugs 34-37 were to be formed on the long sides 2 and 4, the original strip would have to be increased by the length of each lug and a large amount of material removed to form the lugs.
We claim:
1. A hollow, octagon-shaped floor box comprising:
a bottom, four long sides and four short sides each extending up from the bottom to form the hollow box, each two adjacent long sides extending perpendicular to each other with a short side extending therebetween and oriented at an obtuse angle to each long side;
each short side comprising first and second sections, the first section being an extension of one of the long sides and the second section being an extension of the other long side, also the first and second sections each being L-shaped and the edge of the leg of the first section abutting the edge of the foot of the second section and the edge of the foot of the first section abutting the edge of the leg of the second section;
a leveling lug extending outwardly from the top of said foot;
a fastening lug on the top of the first section and extending outwardly therefrom and overlapping the second section and being spot welded thereto;
a mounting lug at the top edge of said other long side and extending in to the box and generally perpendicular to the long side; and
said bottom, said sides, said leveling, fastening and mounting lugs all being integral and made from pregalvanized metal and formed on a multi-stage progressive die.
2. A construction in accordance with claim 1 further including knock-outs on the bottom and knockouts on each of the long sides, the knock-outs on each long side which carries the fastening lugs being larger in diameter than the knockouts on the other long sides.
3. A hollow octagon-shaped fioor box comprising:
a bottom, four long sides and four short sides each extending up from the bottom to form the hollow box, each two adjacent long sides extending perpendicular to each other with a short side extending therebetween and oriented at an obtuse angle to each long side;-
each short side comprising first leg of the second sections, the first section being an extension of one of the long sides and the second section being an extension of the other long side, also the first and second sections each being L-shaped and the edge of the leg of the first section abutting the edge of the foot of the second section and the edge of the foot of the first section abutting the edge of the leg of the second section;
a leveling lug extending outwardly from the top of said foot;
a fastening lug on the top of the first section and extending outwardly therefrom and overlapping the second section and being spot welded thereto;
a mounting lug at the top edge of said second section and extending in to the box and generally perpendicular to the second section; and
said bottom, said sides, said leveling, fastening and mounting lugs all being integral and made from pregalvanized metal and formed on a multistage progressive die.
4. A construction in accordance with claim 3 further including knock-outs on the bottom and knock-outs on each of the long sides, the knock-outs on each long side which carries the fastening lugs being larger in diame ter than the knock-outs on the other long sides.

Claims (4)

1. A hollow, octagon-shaped floor box comprising: a bottom, four long sides and four short sides each extending up from the bottom to form the hollow box, each two adjacent long sideS extending perpendicular to each other with a short side extending therebetween and oriented at an obtuse angle to each long side; each short side comprising first and second sections, the first section being an extension of one of the long sides and the second section being an extension of the other long side, also the first and second sections each being L-shaped and the edge of the leg of the first section abutting the edge of the foot of the second section and the edge of the foot of the first section abutting the edge of the leg of the second section; a leveling lug extending outwardly from the top of said foot; a fastening lug on the top of the first section and extending outwardly therefrom and overlapping the second section and being spot welded thereto; a mounting lug at the top edge of said other long side and extending in to the box and generally perpendicular to the long side; and said bottom, said sides, said leveling, fastening and mounting lugs all being integral and made from pregalvanized metal and formed on a multi-stage progressive die.
2. A construction in accordance with claim 1 further including knock-outs on the bottom and knock-outs on each of the long sides, the knock-outs on each long side which carries the fastening lugs being larger in diameter than the knock-outs on the other long sides.
3. A hollow octagon-shaped floor box comprising: a bottom, four long sides and four short sides each extending up from the bottom to form the hollow box, each two adjacent long sides extending perpendicular to each other with a short side extending therebetween and oriented at an obtuse angle to each long side; each short side comprising first leg of the second sections, the first section being an extension of one of the long sides and the second section being an extension of the other long side, also the first and second sections each being L-shaped and the edge of the leg of the first section abutting the edge of the foot of the second section and the edge of the foot of the first section abutting the edge of the leg of the second section; a leveling lug extending outwardly from the top of said foot; a fastening lug on the top of the first section and extending outwardly therefrom and overlapping the second section and being spot welded thereto; a mounting lug at the top edge of said second section and extending in to the box and generally perpendicular to the second section; and said bottom, said sides, said leveling, fastening and mounting lugs all being integral and made from pregalvanized metal and formed on a multi-stage progressive die.
4. A construction in accordance with claim 3 further including knock-outs on the bottom and knock-outs on each of the long sides, the knock-outs on each long side which carries the fastening lugs being larger in diameter than the knock-outs on the other long sides.
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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993212A (en) * 1973-08-07 1976-11-23 Ryan Allan F Electrical outlet box
US4044909A (en) * 1976-11-15 1977-08-30 Midland-Ross Corporation Tile wall cover
US4640433A (en) * 1985-11-21 1987-02-03 Harvey Hubbell Incorporated Eccentric knockouts for metal boxes
US4742585A (en) * 1987-05-01 1988-05-10 Logsdon Duane D Tub box
US5043536A (en) * 1990-04-06 1991-08-27 Hubbell Incorporated Rotation-limiting knockout configuration
EP0508175A2 (en) * 1991-04-09 1992-10-14 OBO Bettermann OHG Electrical distribution box for surface mounting on a wall
US5191171A (en) * 1991-01-23 1993-03-02 Thomas & Betts Corporation Eccentric knockouts
EP0554986A2 (en) * 1992-02-03 1993-08-11 The Whitaker Corporation Surface mount outlet
US5251103A (en) * 1991-07-13 1993-10-05 Mercedes-Benz A.G. Vehicle component holding case
US5661264A (en) * 1995-01-31 1997-08-26 Reiker; Kenneth H. Load supporting electrical box system suited for installation in concrete
US5907124A (en) * 1995-01-12 1999-05-25 Reiker; Kenneth H. Non-metallic electrical box with metallic fixture support
US6066803A (en) * 1998-05-18 2000-05-23 Randl Industries, Inc. Junction box and assembly
US6207894B1 (en) 1995-01-31 2001-03-27 Reiker Enterprises Of Northwest Florida Inc. Load supporting electrical box system suited for installation in concrete and having enlarged cavity therein
US6207898B1 (en) 1995-01-12 2001-03-27 Reiker Enterprises Of Northwest Florida, Inc. Electrical box with fixture support
US20070170086A1 (en) * 2006-01-24 2007-07-26 Jacks Craig A Receptacle for enclosing low-voltage electronic devices in a building structure
US20120067609A1 (en) * 2010-09-14 2012-03-22 Southwire Company Folded Electrical Junction Boxes and Associated Methods of Use and Manufacture
US20120248112A1 (en) * 2011-03-29 2012-10-04 John Mezzalingua Associates Inc. Configurable enclosure
US20130066187A1 (en) * 2011-09-12 2013-03-14 Bernd Maciejewski Housing Unit and a Medical Imaging Device Comprising a Housing Unit
US20150176239A1 (en) * 2013-12-19 2015-06-25 Zip Valve Boxes LLC Equipment housing
EP2915607A1 (en) * 2014-03-04 2015-09-09 Fontaine Holdings NV Galvanized metal objects and their manufacturing process
USD764637S1 (en) 2014-12-17 2016-08-23 Zip Valve Boxes LLC Equipment housing
CN106159840A (en) * 2015-04-17 2016-11-23 江苏健龙电器有限公司 A kind of novel bright wire terminal box
US10833496B2 (en) 2011-03-29 2020-11-10 Ppc Broadband, Inc. Configurable enclosure
US20210273434A1 (en) * 2017-07-05 2021-09-02 Hubbell Incorporated Weatherproof electrical enclosure with reinforcement
GB2615116A (en) * 2022-01-28 2023-08-02 Electrix International Ltd A method and template for creating a component for an enclosure

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US1471340A (en) * 1921-09-15 1923-10-23 Knight Julian Gordon Outlet or junction box
US1557066A (en) * 1921-02-14 1925-10-13 Westinghouse Electric & Mfg Co Box structure
US1761398A (en) * 1924-03-03 1930-06-03 Knight Julian Gordon Outlet or junction box
US1860833A (en) * 1929-06-28 1932-05-31 Nat Electric Prod Corp Knockdown box
US2250685A (en) * 1939-11-24 1941-07-29 Thomas B Tiefenbacher Locking device
US2625288A (en) * 1948-10-01 1953-01-13 Gen Electric Electrical outlet box
US2697535A (en) * 1951-06-25 1954-12-21 Oscar J Olson Outlet box

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US1557066A (en) * 1921-02-14 1925-10-13 Westinghouse Electric & Mfg Co Box structure
US1471340A (en) * 1921-09-15 1923-10-23 Knight Julian Gordon Outlet or junction box
US1761398A (en) * 1924-03-03 1930-06-03 Knight Julian Gordon Outlet or junction box
US1860833A (en) * 1929-06-28 1932-05-31 Nat Electric Prod Corp Knockdown box
US2250685A (en) * 1939-11-24 1941-07-29 Thomas B Tiefenbacher Locking device
US2625288A (en) * 1948-10-01 1953-01-13 Gen Electric Electrical outlet box
US2697535A (en) * 1951-06-25 1954-12-21 Oscar J Olson Outlet box

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993212A (en) * 1973-08-07 1976-11-23 Ryan Allan F Electrical outlet box
US4044909A (en) * 1976-11-15 1977-08-30 Midland-Ross Corporation Tile wall cover
US4640433A (en) * 1985-11-21 1987-02-03 Harvey Hubbell Incorporated Eccentric knockouts for metal boxes
US4742585A (en) * 1987-05-01 1988-05-10 Logsdon Duane D Tub box
US5043536A (en) * 1990-04-06 1991-08-27 Hubbell Incorporated Rotation-limiting knockout configuration
US5191171A (en) * 1991-01-23 1993-03-02 Thomas & Betts Corporation Eccentric knockouts
EP0508175A2 (en) * 1991-04-09 1992-10-14 OBO Bettermann OHG Electrical distribution box for surface mounting on a wall
EP0508175A3 (en) * 1991-04-09 1994-03-02 Bettermann Obo Ohg
US5251103A (en) * 1991-07-13 1993-10-05 Mercedes-Benz A.G. Vehicle component holding case
GB2257667B (en) * 1991-07-13 1995-05-10 Daimler Benz Ag A casing for holding components in vehicles
EP0554986A2 (en) * 1992-02-03 1993-08-11 The Whitaker Corporation Surface mount outlet
EP0554986A3 (en) * 1992-02-03 1994-03-23 Whitaker Corp
US5907124A (en) * 1995-01-12 1999-05-25 Reiker; Kenneth H. Non-metallic electrical box with metallic fixture support
US6207898B1 (en) 1995-01-12 2001-03-27 Reiker Enterprises Of Northwest Florida, Inc. Electrical box with fixture support
US5661264A (en) * 1995-01-31 1997-08-26 Reiker; Kenneth H. Load supporting electrical box system suited for installation in concrete
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