US3247638A - Interlocking tile carpet - Google Patents

Interlocking tile carpet Download PDF

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US3247638A
US3247638A US282350A US28235063A US3247638A US 3247638 A US3247638 A US 3247638A US 282350 A US282350 A US 282350A US 28235063 A US28235063 A US 28235063A US 3247638 A US3247638 A US 3247638A
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tile
interlocking
edges
surfaces
carpet
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US282350A
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Jr Steve Gay
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JAMES W FAIR
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JAMES W FAIR
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47GHOUSEHOLD OR TABLE EQUIPMENT
    • A47G27/00Floor fabrics; Fastenings therefor
    • A47G27/02Carpets; Stair runners; Bedside rugs; Foot mats
    • A47G27/0293Mat modules for interlocking engagement
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00Flooring
    • E04F15/02Flooring or floor layers composed of a number of similar elements
    • E04F15/10Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials

Description

April 26, 1966 s, GAY, JR 3,247,638

INTERLOCKING TILE CARPET Filed May 22, 1963 2 Sheets-Sheet 1 INVENTOR. 5751/5 6A Y JR.

1 Eon/,4:20 00E/EMM 44 30 56 45 Arroz/ugr April 26, 1966 s. GAY, .JR 3,247,638

INTERLOCKING TILE CARPET Filed May 22, 1963 2 Sheets-Sheet 2 Fra. 4.

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n. 1 .J '17 .4/4 "42 50 44/ va (5@ INVENTOR. STEVE 6A y J/e.

BY Eon/AED D. 05E/AM Arme/ffy United States Patent C) 3,247,638 INTERLUCKING 'liiLE CARPET Steve Gay, Jr., Sepulveda, Calif., assigner, by mesne assignments-to 3 ames W. Fair Filed May 22, 1963, Ser. No. 282,350 Claims. (Cl. 52-594) This invention relates to an interlocking tile carpet.

It is well known in the art of carpeting floors that it is diiiicult to lay carpet upon a concrete iioor. The difiiculty, of course, lies with the fact that securement to concrete is diicult and thus it is diiiicult to engage the edges of the carpet in place. Needlebars are used which comprise a bar having upstanding needles which eng-age in the carpet. These are presumably secured to the floor around the periphery of the carpet area and the carpet is laid thereover. Securing the bars to the floor is a diicult task when the floor is of concrete construction. Accordingly, such carpets tend to corne loose and do not give good service life. Carpet generally has another disadvantage as well. This disadvantage is the wear of areas where trafiic is heaviest. Traliic patterns soon become notice-able in a new carpet and thus become objectionable, for the carpet does not present the proper uniform appearance as it has when it is in good condition. For best appearance, the whole carpet must be relayed with new material evenV though only 10 or 20 percent of the total area shows wear. This, of course, is a waste of good material and is Iobjectionable for the replacing of unworn areas is a needless waste of labor and material.

Accordingly, itis an object of this invention to provide a carpet that can be readily and` conveniently attached to concrete floor.

It is another object of this invention to provide a carpet which can be replaced in sections so that worn areas may be readily removed and replaced with new material.

It is another object of 1this invention to provide a carpet attached to tile so that sections thereof may be removed and replaced wihout disturbing the adjacent carpet tile sections.

It is a further object of this invention to provide a fully interlocking tile carpet so that a minimum of adhesive is necessary to hold the carpet tile sections in place.

It is another object of this invention to provide fully interlocking carpet tile where each of the tile elements interlocks with the other so that individual tiles cannot become loose `or be removed from the tile assembly.

Other objects and advantages of this invention will become apparent from a study of the following specification, `the claims and `the attached drawings in. which:

FIGURE l is an elevational section through portions of several tile of this invention; =FIGURE 2 is a bottom view of the tile of FIGURE 1, taken along the line 2--2 of FIGURE l;

FIGURE 3 is a section along the interlocking joint between the tile, taken along the line 3-3 of FIGURE 2;

FIGURE 4 is a partial elevational section of one of the interlock-ing tiles of this invention showing ca-rpet att-ached thereto;

FIGURE 5 is a partial side elevational section of an interlocking tile of this invention intended to be used without carpet;

FIGURE 6 is4 a plan view of a iloor having interlocking tile secured thereto, having one tile removed; and

rFIGURE 7 is a plan view of a replacement tile for use in insertion in the space indicated as being without tile in FIGURE 6.

In summary, this invention is directed to interlocking tile useable either with or with-out carpet thereon. The

3,247,638 Patented Apr. 26, 1966 interlocking feature is a special design and furnishes interlocking rigidity so that tiles do not shift with respect to each other and can be held down with a minimum, or no adhesive. The tile can be used either with or without carpet secured to the top surface thereof, and the top surface is defined -by a normal, square or rectangular shape. At a plane below the top surface both fingers and linger receiving recesses of complementary design are for-med in the tile. These lingers and recesses are of special design so that they interengage and completely interlock, and once a tile is in place it cannot move with respect to its adjacent tiles without deformation of parts. This interlocking is accomplished by having lingers with protuberances extending as interlocking elements, with equivalent recesses to receive these fingers. The basic interlocking is accomplished by deiining the lower edge by straight Surfaces at an acute angle to the upper edge of the tile. These straight surfaces define the fingers and recesses referred to above and the lingers provide locking in three directions. A further, more complete understanding of this invention will be had by reference to the drawings.

Referring now .to FIGURE 1, the tile assembly of this invention is indicated generally at 10. The tile is mounted on a floor 12 while in use, and the tile comprises the basic tile 14, carrying the interlocking members, a carpet pad 16 secured theretoand a carpet 18 secured on top of the carpet pad 16. The carpet 13 is conventionally comprised of a woven base 20 and pile 22 stitched thereto. An enlarged section of this construction is seen in FIGURE 3.

As seen in FIGURE 2, tile 14 is the same as several other identical tiles, one of them being indicated by the numeral 24. FIGURE 2 is a bottom view of the adjoining tile and shows the interlocking lingers and associated recesses in interengagement with each other. The upper surface of the tile is defined by straight edges 26, 28, 30 and 32. These edges are arranged at right angles to each other, in normal fashion, and deiine the appearance of the tile as seen from the top surface after it is laid. Conventionally, these edges define a square but other con- .ligurationa such as rectangles, are within the purview of this invention. The mold for the tile of this invention is arranged in such a manner as to define the straight edges 26 through 32 at the top surface of the tile 14. rllhe mold also creates interlocking lingers and associated recesses in the lower half of the tile.

As is best seen in FIGURE 2, these fingers and recesses are defined by straight surfaces which are theedge or rirn of the lower section. The lower portion is defined by the straight surface 34 which is at an acute angle with respect to the tile edge 26. The surface 34 adjoins the surface 36 which is also at an acute angle with respect to the edge line 26. These two surfaces define a recess, for -they .are recessed under the edge defined by the line 26. The surfaces 34 and 36 join each other in a finger receiving recess portion 33 which is in the form of a half circle tangent to the surface 34. The surface 36 may intersect with the recess 38 as a radius, or the surface 4@ may extend tangent to the recess portion 38, parallel to the surface 34 and intersect the surface 36. The surface 40 is of such length that the dimension from where the surface 40 intersects the surface 36 to the end of the circular linger receiving recess 38 is approximately equal to the diameter of the hemicircle, or the distance between the surface 34 and the surface 40. This construction thus provides a generally triangular recess having a generally hemicylindrical additional recess formed at the apex of the triangle. This entire combination of surfaces provides an undercut for acceptance of the finger on the mating tile is generally indicated at 42.

These surfaces 34 and 36 extend beyond the tile edge 36 to form a protuberant finger 44 which is of such coniiguration as to be complementary to the recess 42. Thus the protuberant finger 44 includes the surfaces 34 and 36 which extend outwardly from `the tile edge, as is seen at the lower edge of the tile in FIGURE 2. Here the surfaces 34 and 36 extend outwardly from the tile edge 32, each being at an acute angle with respect thereto. Protuberance 46 is of hernicylindrical form tangent with the surface 34 and joins with the surface 36. The finger defined by the surfaces 34 and 36 and the protuberance is of complementary structure to the vrecess 42. The interlocking nature of such tile is shown at the left -tile edge 30 of FIGURE 2 and in s section thereof in FIG- URE 3. Here, the recess 42 is occupied by a finger 4S on the adjacent tile 24, and finger 44 carrying its protuberance at the apex extends into the equivalent recess in the mating tile.

The construction is such that the recesses and fingers come together at the corners of the tile edge for full fitting of the corners.

As seen in FIGURE 4, a tile 5t) is shown having a carpet with a woven back 52 and pile 54 secured thereto. In this case, the carpet is secured directly to the tile 50. This construction is adequate for less expensive installations, and is particularly suitable where the tile 50 is of such resiliency as .to obviate the need of a separate pad. Similarly, there are some cases where the woven back 52 of the carpet has an additional resiliency and thus eliminates the need for the pad. Such a tile includes the hereinbefore described finger receiving recess 38 and fin ger 44. The recessSS includes a suitable space for receiving the hereinbefore recited protuberance, and the finger 44 carries such a protuberance for positive interlocking.

FIGURE 5 illustrates a tile 56 which is used in areas where no carpet is necessary. This tile 56 has the standard, smooth finished tile top and carries toward its rear surfacethe hereinbefore described finger receiving recess 3S and finger 44. The finger 44 carries the herein before recited and described protuberance and the recess is of suitable configuration as to receive the finger and protuberance.

FIGURE 6 .and FIGURE 7 illustrate the manner in which an individual tile can be replaced after damage occurs to an area. Tiles 58, 60, 62, 64, 66, 68, 7l) and 72 adjoin the area 74 from which a damaged tile has been removed. The tiles 58 through 72 are of any of the ernbodinients of FIGURES 1, 4 or 5, for this replacement is feasible Whether or not carpet is secured to the top of the tile. Fingers 4 4 of the adjoining tile extend into the area 74, and the adjoining tile have recesses of a nature hereinbefore described to accept the fingers on the tile which is to be put into the area 74. Tile 76 is the tile which is to be placed into the open area 74. Itis either specially molded without fingers on opposite edges, or such fingers are removed before installation so that the tiles 76 may be slipped into the area '74. Accordingly the under side of the tile '76 is identical to those tile hereinbefore described, except for the removal or absence of the fingers from two opposite edges thereof. The tile '76 is installed by placing the fingers on one edge thereof into corresponding recesses in an adjacent tile. Thus the ingers on the upper part of `tile 76, as seen in FIGURE 7, engage in the recesses on the under side of tile 66. The tile 76 is then bent until the fingers on the lower part of the tile 76, as seen in FIGURE 7, are in such position as to be able to slip into the recesses on the under side of `tile 53.

As can be best seen from FIGURE 2 the protuberances 46 on the fingers 44, and the associated recesses 42 on the adjacent tile are such that the tile cannot simply be slipped into place, and accordingly cannot simply be slipped out of place when -the tile is being laid into a corner. One tile may be laid against another by simply slipping it into place, but one tile cannot be laid against two others by such slipping. Accordingly the material of the protuberances 46 must be sufficiently resilient to permit it to deforrn to a sufiicient amount to permit the tile to be laid with edges next to each other. When such deformation is accomplished, ythen the natural resiliency of the protuberances 46 extends then into the accommodating recesses 38 and the tile cannot be displaced without sufficient force to again deform the protuberances 46. This provides positively interlocking tile which can be held in place with minimum adhesive or in some cases, no adhesive at all. It is apparent from this construction that a plurality of fingers and recesses are desirable to interlock the tile along the length of one of its edges. However, in view of the distortion necessary to place the protuberances 46 into their appropriate spaces, it may be desirable to have only one protuberance 46 along each edge of the tile. The number of such protuberances along an edge is determined by several factors including the size of the protuberance, the related angles, the thickness of the protuberance and the resiliency of the material. Each'of these factors affects the amount of force necessary to distort it, resiliently, into the protuberance receiving recess provided therefore. Accordingly, either these factors must be adjusted, or the number of such protuberances 46 along each edge be adjusted so that the tile may be placed in its proper position in a complete layment of tile without undue force, yet the tile has sufiicient interlocking strength for the circumstances. rIhus, this becomes a balance of factors to permit the tile to be easily laid yetstrongly interlocked into position.

This invention having been described in its preferred embodiment, it can be seen that it is capable of numerous embodiments within the skill of the routine engineer. Accordingly, it is desired that the scope of the invention be dened by the scope of the appended claims.

I claim:

1. An interlocking floor tile, said fioor tile being defined by upper and lower sides, four edges and interlocking surfaces, said four edges being straight lines and said interlocking surfaces being adjacent ,to said edges; said interlocking surfaces comprising surfaces at a first acute angle with respect to said edges and surfaces at a second acute angle with .respect to said edges, said surfaces intersecting with each other a-nd defining triangular interlocking fingers and 'finger receiving recesses, said fingers and said iinger receiving recesses being located adjacent to each edge of the tile, a protuberance located on the apex of at least one of said triangular fingers adjacent each of said edges, and a corresponding protuberance receiv-ing recess adjacent eaoh of said tile edges, whereby a plurality of tile, laid together, interlock with each other with said fingers and said protuberances engaging in said nger receiving recesses and protuberance receiving recesses.

2. The interlocking tile of claim 1 wherein said straight edges form a square, and said square is toward the upper side of said tile.

3. The sti'tucture of claim I wherein a carpet is secured to the upper side of said tile.

4. The struc-ture of claim 3 wherein a carpet pad is located between the upper side of said tile and said carpet.

5. An interlocking tile: said tile bein-g defined by upper and lower sides, four edges and surfaces defining .interlocking lfingers and recesses;

said upper and lower sides being respectively adapted to be arranged upward and downward toward the iioor upon which the tile is to be mounted, said upper and lower sides Ibeing substantially plana-r;

said edges being defined 'by straight lines intersecting at substantially right angles;

said fingers and finger receiving recesses being deiined by a plurality of `first surfaces and a plurality of second surfaces, both said first and second surfaces being arranged at an acute angle with respect `to said edges, said edges being toward the upper side and intersecting with said upper si-de of said tile and said sur-faces `being adjacent to and intersecting With said lower surface of said tile, said linge-rs and recesses defined by said surfaces being anranged yfor |mutually interlocking with adjacent tile, a protuberance extending past said second surface mounted on at least one of said nfgers on each of said side, said recess corresponding to said protuberance carrying nger containing a corresponding protuberancereceiving recess, said protuberance being of such conguration that it must be resilien-tly distorted upon laying said oor tile in senies on a floor, whereby said iioor tile is adapted for posit-ive 'interlocking upon installation upon a tloor. 6. The floor tile of claim 5 wherein a carpet lis secured to .the upper side of said tile.

7. The carpet tile of claim 6 wherein a carpet pad is secured between said tile and said carpet.

8. The structure of claim 5 whe-rein lthe upper side of said tile is arranged to be the visible, wear area of said tile.

9. The structure of claim 5 wherein said surfaces and 6 said edges intersect -at the intersection of said edges of said tile.

10. The floor 'tile of claim 5 wherein said -protuberance 4is resiliently distorted when said Hoor tile is laid in series with similar floor tiles upon a oor and said pro-tuberance substantially :returns to its previous configuration after such distortion and after it is positioned within a corresponding pnotuberance receiving recess so that said floor tile is adapted -for positive interlocking yin both an upward and edigeWa-rd direction.

References Cited by the Examiner UNITED STATES PATENTS 928,320 7/1909 Moore 50449 1,473,767 1l/l923 Healy 50-450 2,246,101 7/1941 McEnany 20-7 X 2,708,329 5/l955 McKee 50--448 3,082,488 3/ 1963 Nusbaum 20--8 HARRISON R. MOSELEY, Primary Examiner. REINALDO P. MACHADO, Examiner'.

Claims (1)

1. AN INTERLOCKING FLOOR TILE, SAID FLOOR TILE BEING DEFINED BY UPPER AND LOWER SIDES, FOUR EDGES AND INTERLOCKING SURFACES, SAID FOUR EDGES BEING STRAIGHT LINES AND SAID INTERLOCKING SURFACES BEING ADJACENT TO SAID EDGES; SAID INTERLOCKING SURFACES COMPRISING SURFACES AT A FIRST ACUTE ANGLE WITH RESPECT TO SAID EDGES AND SURFACES AT A SECOND ACUTE ANGLE WITH RESPECT TO SAID EDGES, SAID SURFACES INTERSECTING WITH EACH OTHER AND DEFINING TRIANGULAR INTERLOCKING FINGERS AND FINGER RECEIVING RECESSES, SAID FINGERS AND SAID FINGER RECEIVING RECESSES BEING LOCATED ADJACENT TO EACH EDGE OF THE TILE, A PROTUBERANCE LOCATED ON THE APEX OF AT LEAST ONE OF SAID TRIANGULAR FINGERS ADJACENT EACH OF SAID EDGES, AND A CORRESPONDING PROTUBERANCE RECEIVING RECESS ADJACENT EACH OF SAID TILE EDGES, WHEREBY A PLURALITY OF TILE, LAID TOGETHER, INTERLOCK WITH EACH OTHER WITH SAID FINGERS AND SAID PROTUBERANCES ENGAGING IN SAID FINGER RECEIVING RECESSES AND PROTUBERANCE RECEIVING RECESSES.
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US3420527A (en) * 1966-01-13 1969-01-07 Gilles Morin Mosaic-like arrangement
US3473495A (en) * 1966-10-24 1969-10-21 Mortimer Nusbaum Carpet tile or floor covering and method of making the same
US3657852A (en) * 1969-09-15 1972-04-25 Walter J Worthington Floor tiles
US3694983A (en) * 1970-05-19 1972-10-03 Pierre Jean Couquet Pile or plastic tiles for flooring and like applications
US4090338A (en) * 1976-12-13 1978-05-23 B 3 L Parquet floor elements and parquet floor composed of such elements
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US6298624B1 (en) 1996-07-19 2001-10-09 Tac-Fast Georgia, L.L.C. Anchor sheet and anchor sheet module
US6306477B1 (en) 1996-07-19 2001-10-23 Tac-Fast Georgia, L.L.C. Covering module and anchor sheet
US20020046528A1 (en) * 1999-04-30 2002-04-25 Darko Pervan Locking system, floorboard comprising such a locking system, as well as method for making floorboards
US6395362B1 (en) 1996-07-19 2002-05-28 Tac-Fast Georgia, L.L.C. Anchor sheet framework and subflooring
US6460303B1 (en) 1996-07-19 2002-10-08 Tac-Fast Georgia L.L.C. Hook and loop anchor sheet module with overlapped edges and sufficient mass to resist buckling
US20020178674A1 (en) * 1993-05-10 2002-12-05 Tony Pervan System for joining a building board
US20030110728A1 (en) * 2001-12-13 2003-06-19 Joseph Pacione Structures for creating spaces while installing anchor sheet and attachment piece subfloors
US6584739B2 (en) 2000-03-07 2003-07-01 Maxcess Technologies, Inc. Applied edge trim
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US20040206036A1 (en) * 2003-02-24 2004-10-21 Valinge Aluminium Ab Floorboard and method for manufacturing thereof
US20050102937A1 (en) * 1998-06-03 2005-05-19 Valinge Aluminium Ab Locking System And Flooring Board
US20050138881A1 (en) * 2003-03-06 2005-06-30 Darko Pervan Flooring systems and methods for installation
US20050160694A1 (en) * 2002-04-03 2005-07-28 Valinge Aluminium Mechanical locking system for floorboards
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US7155871B1 (en) 2005-12-29 2007-01-02 Tru Woods Limited Floor plank
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US20070163194A1 (en) * 2005-12-29 2007-07-19 Tru Woods Limited Floor tile
US20070209920A1 (en) * 2006-03-10 2007-09-13 Fujitsu Component Limited Keyboard and membrane switch for keyboard
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US7444791B1 (en) 1998-06-03 2008-11-04 Valinge Innovation Ab Locking system and flooring board
US20090038251A1 (en) * 1996-07-19 2009-02-12 Tac-Fast Georgia L.L.C. Covering module and anchor sheet
US20100026149A1 (en) * 2008-07-31 2010-02-04 Inventec Corporation Staggered embedded type casing
US20100026148A1 (en) * 2008-07-31 2010-02-04 Inventec Corporation Server chassis
US7779596B2 (en) 2000-01-24 2010-08-24 Valinge Innovation Ab Locking system for mechanical joining of floorboards and method for production thereof
US7841144B2 (en) 2005-03-30 2010-11-30 Valinge Innovation Ab Mechanical locking system for panels and method of installing same
US7845140B2 (en) 2003-03-06 2010-12-07 Valinge Innovation Ab Flooring and method for installation and manufacturing thereof
US7886497B2 (en) 2003-12-02 2011-02-15 Valinge Innovation Ab Floorboard, system and method for forming a flooring, and a flooring formed thereof
US8028486B2 (en) 2001-07-27 2011-10-04 Valinge Innovation Ab Floor panel with sealing means
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US2708329A (en) * 1952-05-15 1955-05-17 Mckee Harry Allen Playhouse constructor set
US3082488A (en) * 1957-05-16 1963-03-26 Nusbaum Mortimer Floor or like tile

Cited By (119)

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Publication number Priority date Publication date Assignee Title
US3420527A (en) * 1966-01-13 1969-01-07 Gilles Morin Mosaic-like arrangement
US3473495A (en) * 1966-10-24 1969-10-21 Mortimer Nusbaum Carpet tile or floor covering and method of making the same
US3657852A (en) * 1969-09-15 1972-04-25 Walter J Worthington Floor tiles
US3694983A (en) * 1970-05-19 1972-10-03 Pierre Jean Couquet Pile or plastic tiles for flooring and like applications
US4090338A (en) * 1976-12-13 1978-05-23 B 3 L Parquet floor elements and parquet floor composed of such elements
US20020178674A1 (en) * 1993-05-10 2002-12-05 Tony Pervan System for joining a building board
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