US3295272A - Raised floor construction - Google Patents

Raised floor construction Download PDF

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Publication number
US3295272A
US3295272A US371395A US37139564A US3295272A US 3295272 A US3295272 A US 3295272A US 371395 A US371395 A US 371395A US 37139564 A US37139564 A US 37139564A US 3295272 A US3295272 A US 3295272A
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supporting
floor
panel
panels
sector
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US371395A
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Kanno Tomonobu
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Furukawa Casting Co Ltd
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Furukawa Casting Co Ltd
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/024—Sectional false floors, e.g. computer floors
    • E04F15/02405—Floor panels
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/024—Sectional false floors, e.g. computer floors
    • E04F15/02447—Supporting structures
    • E04F15/02452—Details of junctions between the supporting structures and the panels or a panel-supporting framework

Definitions

  • a lifted or raised oor is constructed by arranging panel shaped layers above an existing floor of a structure, and then underneath the lifted floor, the cables and the like are housed so as to be protected from being damaged and the apparatus room may be put in order.
  • the structure of the lifted floor, any floor panel of which can be removed is called normally a free access type.
  • This invention relates to a oor panel supporting device that affords supporting of floor panels in the lifted floor of the type as mentioned above.
  • the lifted floor has been constructed in such a manner that a frame is formed on the existing floor, and this frame is supported by means of a sup porting stand which is adapted to be lifted or lowered as desired by using an adjusting screw. Then the frame is paved with square or rectangular iioor panels and the lifted floor is arranged to be partially removable.
  • a sup porting stand which is adapted to be lifted or lowered as desired by using an adjusting screw.
  • the frame is paved with square or rectangular iioor panels and the lifted floor is arranged to be partially removable.
  • such structure of the frame presents difficulty in making and assembling, moreover it is bulky, therefore it has the disadvantage of being not suitable for rearrang ing the room.
  • the inventor has already invented a lifted floor panel supporting device wherein by arranging sectorshaped engaging parts at the four corners on the back side of the licor panel and assembling the sector-shaped engaging parts of neighboring panels cylindrically in an abutting manner the sector-shaped engaging part at each corner contacts the neighboring panels so as to form an engaging projection.
  • this projection By holding this projection in a recess of a supporting disc having an axial flange and supporting the end surface of the said projection by means of the bottom surface of the recess, and then supporting the disc by means of a nut on a stud-screw of a stand which is so arranged as to be lifted or lowered as desired by a screw, each of the adjacent panels is engaged at the corner thereof to be supported as a whole.
  • the invention eliminates the above said disadvantages of the prior arts.
  • the present invention is an improvement of the above mentioned device and provides a novel panel structure that is capable of, not only in the case of supporting the floor panels by means of said supporting disc with a ange but in the case of, for example, a heavy mounting load, being placed on the frame structure of iknown construction without any modification and supporting satisfactorily a large supporting area.
  • Lower surfaces of ribs provided on the back side of the panel are flushed with the rear surface of the sector-shaped engaging part in-order to be able to support these surfaces on the frame with a large pressure receiving area, in other words, sectorshaped engaging slot is constituted by forming the sector* shaped slot, which engages with the ange in the axial direction provided at the periphery of the supporting disc,
  • FIG. 1 is a perspective View illustrating the upper floor of the supporting device embodying the invention
  • FIGS. 2a, 2b and 2c are perspective views illustrating the engaging structure of the supporting rod and floor panel
  • FIG. 3 is a back view of the floor panel
  • FIG. 4 is a sectional view on the line AA of FIG. 3,
  • FIGS. 5a and 5b are perspective views illustrating the engaging portions of the panel in two different forms
  • FIGS. 6a and 6b show sectional elevation of the supporting rod
  • FIG. 7 is a perspective view of the upper floor supported by the frame.
  • iioor panels 1a, 1b, 1c, 1n each of which is, as shown in FlGS. 3, 4 and 5, made of a light alloy diecase floor panel coated with a sheet of plastics 2 thereon and is reinforced by intersecting ribs 3 provided on the back side thereof, and then these panels are laid out successively so as to form a lifted floor.
  • a quadrant arc-shaped engaging slot 4 is excavated about the vertex of the corner as a centre.
  • S designates the sector-shaped engaging part defined by the arc-shaped engaging slot 4, and at the central part thereof a hole 6 is provided, 7 is the supporting disc having the flange 8 projected axially therefrom for engaging the arc-shaped slot 4, this flange 8 engages a cylindrical engaging assembly formed by abutting the said arc-shaped slots 4 of neighboring panels, thereby supporting the end surface of the sector-shaped engaging part 5 by the bottom surface 7a of the recess of the supporting disc 7 for coupling the adjacent panels together as well as supporting them. If the end surface of the sector-shaped engaging part 5 is projected downwards from the lower surface of the ribs 3, as shown in FIG. 5b, the slots 4 may be dispensed with.
  • the supporting disc 7 is provided with a bored boss 9 at the lower surface thereof and is so arranged as to be lifted and lowered freely by means of double nuts 12, 13 engaged by screw threads onto a stud 11 seceured to Ia stand base 10
  • 14 designates reinforcing ribs for supporting the disc 7 and 15 is a cushion.
  • the supporting stand 16 is comprised of the said supporting disc 7, the said stand base 10, the said stud 11 and the said nuts 12 and 13.
  • the iioor panels 1 and supporting stands 16 are prepared as above described and a rst floor panel 1a is sup-ported by mean-s ofthe supporting disc 7 and leveling it, as shown in FIG. 2a crowning the arc-shaped engaging slot d over the flange 8, then placing an adjacent second floor panel 1b next to the first iloor panel in such a manner as shown in FIG. 2b, engaging the ⁇ arc-shaped engaging slot 4 thereof with the flange 8, hence supporting the neighboring panels 1a, 1b and coupling them together.
  • FIG. l shows the structure of the lifted floor by removing one floor panel, wherein 17 represents a wall and 18 a corner pillar.
  • the sector-shaped engaging part is fitted into the recess defined by the ange 8 respectively.
  • the invention constructed as above described, enables easy removal of any one of the panels 1 as desired and it has the advantages of the free access type lifted floor. Further, since the door panels are coupled and supported directly by means of the supporting stands, the assembling operation becomes extremely simple. Moreover, it has advantage that it is possible to make rearrangement in any room easy.
  • each floor panel is supported by contacting the bottom surface 7a of the engaging recess of the supporting disc with the end surface of the quadrant sector-shaped engaging part 5 dened by the arc-shaped engaging slot 4 at the corners of the floor panel and providing sound coupling by the engagement of the arc-shaped slot 4 with the flange 8 of the supporting disc, the floor panels can be held regardless of rotatable relative position between the supporting disc of the supporting stands and the cylindrical engaging parts and the attaching operation thereof is very easy. Yet further, the production of the supporting stan-d including the supporting disc is quite simple, and in addition to this, the coupling and the locking of the floor panels are very positive.
  • a raised iloor construction comprising a plurality of oor panels each of which is provided with at least three sides, an upper surface and a lower surface, a plurality of reinforcing ribs depending from said lower surface and a sector-shaped projection depending from said lower surface of said panel at each corner thereof with the apex of each sector located ⁇ at the point of intersection lof two adjacent sides of said panel and the lower surface of each projection disposed in the same plane as the lower surfaces of said ribs; and ya support pedestal having a base, a flat support plate having an upstanding circular flange secured thereto and projecting upwardly therefrom and means adjustably supporting said plate at a desired distance above said base; arcuate groove means formed in said ribs about the arcuate surface of said sector-shaped projections, the radius of said circular flange and the radius of said groove means being substantially equal whereby upon placing a plurality of panels in contiguous planar relation yabout a central point, said arcuate groove ,means defines a circular

Description

Jan. 3, 1967 roMcJNoiaU KANNo 3,295,272
RAISED FLOOR CONSTRUCTION 5 Sheets-Sheet 1 Filed June l, 1964 Jam 3, 1967 roMoNoBu KANNO 3,295,272
RAISED FLOOR CONSTRUCTION Filed June 1, 1964 15 Sheets-Sheet` 2 Jan. 3, 1967 'roMoNoBU KANNO RAI SED FLOOR CONSTRUCTION 5 Sheets-Sheet 5 Filed June 1, 1964 United States Patent O 3,295,272 RAlSED FLGE CUNSTRUCTEON Tomonobu Kanne, Gta-ku, Tokyo, `lapan, assigner to Furukawa Casting Company Limited, Kawasaki, Japan Filed June 1, 1964, Ser. No. 371,395 Claims priority, application Japan, Aug. 7, 1963, Sti/59,046; Dec. 17, 1963, 258/94,@23 3 Claims. (Cl. 52-126) This invention relates to an improved lifted or raised floor panel supporting device, and in particular to a supporting device that affords sound supporting of lifted floor panels.
For making it possible to house various signal and power lcables for connecting various electrical apparatus units to each other and to electric power sources in a room, like an electric computer room, wherein the various electrical apparatus units are installed, a lifted or raised oor is constructed by arranging panel shaped layers above an existing floor of a structure, and then underneath the lifted floor, the cables and the like are housed so as to be protected from being damaged and the apparatus room may be put in order. The structure of the lifted floor, any floor panel of which can be removed is called normally a free access type.
This invention relates to a oor panel supporting device that affords supporting of floor panels in the lifted floor of the type as mentioned above.
Heretofore, the lifted floor has been constructed in such a manner that a frame is formed on the existing floor, and this frame is supported by means of a sup porting stand which is adapted to be lifted or lowered as desired by using an adjusting screw. Then the frame is paved with square or rectangular iioor panels and the lifted floor is arranged to be partially removable. However, such structure of the frame presents difficulty in making and assembling, moreover it is bulky, therefore it has the disadvantage of being not suitable for rearrang ing the room.
The inventor has already invented a lifted floor panel supporting device wherein by arranging sectorshaped engaging parts at the four corners on the back side of the licor panel and assembling the sector-shaped engaging parts of neighboring panels cylindrically in an abutting manner the sector-shaped engaging part at each corner contacts the neighboring panels so as to form an engaging projection. By holding this projection in a recess of a supporting disc having an axial flange and supporting the end surface of the said projection by means of the bottom surface of the recess, and then supporting the disc by means of a nut on a stud-screw of a stand which is so arranged as to be lifted or lowered as desired by a screw, each of the adjacent panels is engaged at the corner thereof to be supported as a whole. Simultaneously the invention eliminates the above said disadvantages of the prior arts.
The present invention is an improvement of the above mentioned device and provides a novel panel structure that is capable of, not only in the case of supporting the floor panels by means of said supporting disc with a ange but in the case of, for example, a heavy mounting load, being placed on the frame structure of iknown construction without any modification and supporting satisfactorily a large supporting area. Lower surfaces of ribs provided on the back side of the panel are flushed with the rear surface of the sector-shaped engaging part in-order to be able to support these surfaces on the frame with a large pressure receiving area, in other words, sectorshaped engaging slot is constituted by forming the sector* shaped slot, which engages with the ange in the axial direction provided at the periphery of the supporting disc,
at the four corners on the back side of the panel with the apex of the corner as a centre respectively.
For a better understanding of the invention reference is taken to the accompanying drawing, in which,
FIG. 1 is a perspective View illustrating the upper floor of the supporting device embodying the invention,
FIGS. 2a, 2b and 2c are perspective views illustrating the engaging structure of the supporting rod and floor panel,
FIG. 3 is a back view of the floor panel,
FIG. 4 is a sectional view on the line AA of FIG. 3,
FIGS. 5a and 5b are perspective views illustrating the engaging portions of the panel in two different forms,
FIGS. 6a and 6b show sectional elevation of the supporting rod, and
FIG. 7 is a perspective view of the upper floor supported by the frame.
Referring now to the drawings, there are shown iioor panels 1a, 1b, 1c, 1n each of which is, as shown in FlGS. 3, 4 and 5, made of a light alloy diecase floor panel coated with a sheet of plastics 2 thereon and is reinforced by intersecting ribs 3 provided on the back side thereof, and then these panels are laid out successively so as to form a lifted floor.
At each of the four corners on the back side of iioor panels 1a, a quadrant arc-shaped engaging slot 4, as more clearly shown in FIG. 5a, is excavated about the vertex of the corner as a centre. S designates the sector-shaped engaging part defined by the arc-shaped engaging slot 4, and at the central part thereof a hole 6 is provided, 7 is the supporting disc having the flange 8 projected axially therefrom for engaging the arc-shaped slot 4, this flange 8 engages a cylindrical engaging assembly formed by abutting the said arc-shaped slots 4 of neighboring panels, thereby supporting the end surface of the sector-shaped engaging part 5 by the bottom surface 7a of the recess of the supporting disc 7 for coupling the adjacent panels together as well as supporting them. If the end surface of the sector-shaped engaging part 5 is projected downwards from the lower surface of the ribs 3, as shown in FIG. 5b, the slots 4 may be dispensed with.
Now referring to FIG. 6a, the supporting disc 7 is provided with a bored boss 9 at the lower surface thereof and is so arranged as to be lifted and lowered freely by means of double nuts 12, 13 engaged by screw threads onto a stud 11 seceured to Ia stand base 10|, or it may be so arranged that by cutting screw thread at the interior of the boss 9, as shown in FIG. 6b, the stud 11 engages therewith and the other end of the stud 11 is tted into a boss provided on the base. 14 designates reinforcing ribs for supporting the disc 7 and 15 is a cushion.
The supporting stand 16 is comprised of the said supporting disc 7, the said stand base 10, the said stud 11 and the said nuts 12 and 13.
According to the invention, the iioor panels 1 and supporting stands 16 are prepared as above described and a rst floor panel 1a is sup-ported by mean-s ofthe supporting disc 7 and leveling it, as shown in FIG. 2a crowning the arc-shaped engaging slot d over the flange 8, then placing an adjacent second floor panel 1b next to the first iloor panel in such a manner as shown in FIG. 2b, engaging the `arc-shaped engaging slot 4 thereof with the flange 8, hence supporting the neighboring panels 1a, 1b and coupling them together.
In the same manner, laying the floor panels 1 out laterally in order, then after completing the layout of the first line, the next line is started to be laid out with oor panel 1n, as shown in FIG. 2c, along side the line of 1a, and thereby engaging the arc-shaped engaging slot 4 with the flange 8, then the engaging slot 4 of an adjacent panel is engaged with the remaining part of the flange 8, hence by repeating this kind of work the lifted oor can .'5 be constructed. FIG. l shows the structure of the lifted floor by removing one floor panel, wherein 17 represents a wall and 18 a corner pillar. In the case of utilizing floor panels of the type having no engaging slots 4, the sector-shaped engaging part is fitted into the recess defined by the ange 8 respectively.
In the case of forming a lifted floor on an existing frame 19, as shown in FIG. 7, it is enough by laying merely the panels 1 shown in FIG. 5a out on the frame, since the supporting stands 16 are not necessary in this case, and thereby since the load supportingy ribs on the back side of the panels are in ush with the engaging projection 5, the pressure receiving area will be increased to enable to support heavy load easily.
The invention, constructed as above described, enables easy removal of any one of the panels 1 as desired and it has the advantages of the free access type lifted floor. Further, since the door panels are coupled and supported directly by means of the supporting stands, the assembling operation becomes extremely simple. Moreover, it has advantage that it is possible to make rearrangement in any room easy. Still further, since each floor panel is supported by contacting the bottom surface 7a of the engaging recess of the supporting disc with the end surface of the quadrant sector-shaped engaging part 5 dened by the arc-shaped engaging slot 4 at the corners of the floor panel and providing sound coupling by the engagement of the arc-shaped slot 4 with the flange 8 of the supporting disc, the floor panels can be held regardless of rotatable relative position between the supporting disc of the supporting stands and the cylindrical engaging parts and the attaching operation thereof is very easy. Yet further, the production of the supporting stan-d including the supporting disc is quite simple, and in addition to this, the coupling and the locking of the floor panels are very positive.
What I claim is:
1. A raised iloor construction comprising a plurality of oor panels each of which is provided with at least three sides, an upper surface and a lower surface, a plurality of reinforcing ribs depending from said lower surface and a sector-shaped projection depending from said lower surface of said panel at each corner thereof with the apex of each sector located `at the point of intersection lof two adjacent sides of said panel and the lower surface of each projection disposed in the same plane as the lower surfaces of said ribs; and ya support pedestal having a base, a flat support plate having an upstanding circular flange secured thereto and projecting upwardly therefrom and means adjustably supporting said plate at a desired distance above said base; arcuate groove means formed in said ribs about the arcuate surface of said sector-shaped projections, the radius of said circular flange and the radius of said groove means being substantially equal whereby upon placing a plurality of panels in contiguous planar relation yabout a central point, said arcuate groove ,means defines a circular groove adapted t0 receive said circular ange to support and lock said panels in the proper relative relationship.
2. A raised floor construction as set forth in claim 1 wherein the depth of said groove means and the height of said ange are so related that the lower surfaces of said sector-shaped projections rest upon said flat support plate.
3. A raised floor construction `according to claim 2 wherein a plurality of said pedestals are provided one at each point of intersection of a plurality of said panels.
References Cited by the Examiner UNITED STATES PATENTS 2,867,301 l/l959 Benton 52-263 3,180,460 A4/1965 Liskey 52 l26 3,236,485 2/1966 Staples 24S-188.1
REINALDO P. MACHADO, Primary Examiner.

Claims (1)

1. A RAISED FLOOR CONSTRUCTION COMPRISING A PLURALITY OF FLOOR PANELS EACH OF WHICH IS PROVIDED WITH AT LEAST THREE SIDES, AN UPPER SURFACE AND A LOWER SURFACE, A PLURALITY OF REINFORCING RIBS DEPENDING FROM SAID LOWER SURFACE AND A SECTOR-SHAPED PROJECTION DEPENDING FROM SAID LOWER SURFACE OF SAID PANEL AT EACH CORNER THEREOF WITH THE APEX OF EACH SECTOR LOCATED AT THE POINT OF INTERSECTION OF TWO ADJACENT SIDES OF SAID PANEL AND THE LOWER SURFACE OF EACH PROJECTION DISPOSED IN THE SAME PLANE AS THE LOWER SURFACES OF SAID RIBS; AND A SUPPORT PEDESTAL HAVING A BASE, A FLAT SUPPORT PLATE HAVING AN UPSTANDING CIRCULAR FLANGE SECURED THERETO AND PROJECTING UPWARDLY THEREFROM AND MEANS ADJUSTABLY SUPPORTING SAID PLATE AT A DESIRED DISTANCE ABOVE SAID BASE; ARCUATE GROOVE MEANS
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Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425179A (en) * 1967-02-15 1969-02-04 Victor G Haroldson Elevated flooring
US3877189A (en) * 1973-10-09 1975-04-15 Helmut Mauell Lattice assembly, e.g. for mosaic tiles, electrical circuit elements and display systems
US3910051A (en) * 1974-05-03 1975-10-07 Joseph A Komisarek Leaching system cavity of preformed components
US4016694A (en) * 1974-06-12 1977-04-12 Helmut Mauell Snap-connectable lattice assembly for electrical-circuit tiles
US4074488A (en) * 1974-06-05 1978-02-21 Liskey Archectural Mfg. Inc. Elevated floor assembly
EP0135240A2 (en) * 1983-09-21 1985-03-27 "C.B.R. Béton" Self-supporting slab for a false floor
US4571200A (en) * 1984-11-15 1986-02-18 Mattel, Inc. Modular toy building set
US4573299A (en) * 1982-12-10 1986-03-04 Forbo-Teppichwerk Ag Floor covering article
EP0219985A2 (en) * 1985-09-27 1987-04-29 Intek Floors Limited Concrete slab for a platform floor
US4745715A (en) * 1987-03-23 1988-05-24 Farley Metals, Inc. Elevated floor plate
US4748789A (en) * 1986-07-21 1988-06-07 Hedley Gilbert P Access floor panel
US4825603A (en) * 1987-03-23 1989-05-02 Farley, Inc. Elevated floor plate
US4843781A (en) * 1986-07-18 1989-07-04 Chase Iii Francis H Composite access floor panel
US4914881A (en) * 1986-01-10 1990-04-10 Techfloor Pty. Ltd. Access flooring system
US5052157A (en) * 1990-02-02 1991-10-01 Servoplan, S.A. Flooring system especially designed for facilities which house data processing equipment
US5074085A (en) * 1990-03-20 1991-12-24 Fukuvi Chemical Industry Co., Ltd Panel for use in double floors
US5499476A (en) * 1993-08-31 1996-03-19 Interface, Inc. Low profile raised panel flooring with metal support structure
USRE35369E (en) * 1989-02-03 1996-11-05 Guilford (Delaware) Inc. Flooring system especially designed for facilities which house data processing equipment
US5640821A (en) * 1995-10-05 1997-06-24 Koch; Charles P. Plastic connector plug for modular floor
US5673522A (en) * 1994-03-25 1997-10-07 Guilford, Inc. Junction box forlow profile raised panel flooring
US5675950A (en) * 1994-03-25 1997-10-14 Guilford (Delaware), Inc. Metal support framework for low profile raised panel flooring
US5713168A (en) * 1994-03-25 1998-02-03 Guilford (Delaware), Inc. Junction box for low profile raised panel flooring
US5828001A (en) * 1995-02-15 1998-10-27 Guilford (Delaware), Inc. Plastic junction box with receptacle boxes
US6519902B1 (en) 2001-10-05 2003-02-18 Maxcess Technologies, Inc. Heavy-duty floor panel for a raised access floor system
US20030131766A1 (en) * 2002-01-16 2003-07-17 Yakov Petlakh Temporary collapsible stage with an adjustable height
LU91018B1 (en) * 2003-04-01 2004-10-04 Uniflair Int Sa Elevated floor assembly.
USRE39097E1 (en) 1994-03-25 2006-05-23 Guildford (Delaware), Inc. Metal support framework for low profile raised panel flooring
US20080245019A1 (en) * 2007-03-29 2008-10-09 Natividad Vilar Llop Assembly system for floor and/or wall tiles
US20080286053A1 (en) * 2003-04-08 2008-11-20 Baugh Benton F Arctic platform
US20090100781A1 (en) * 2007-10-23 2009-04-23 Mehdi Hatamian Modular building system
ES2326613A1 (en) * 2007-03-29 2009-10-15 Promociones Brial S.L. Improvements introduced in the invention patent n. P-200700831/9 by removable floor (Machine-translation by Google Translate, not legally binding)
US20100000163A1 (en) * 2008-07-01 2010-01-07 Hong-I Tsai Raised floor structure
US20110262216A1 (en) * 2010-04-21 2011-10-27 Thomas & Betts International, Inc. Locking device for a rooftop support
US20190055733A1 (en) * 2015-10-22 2019-02-21 Mbrico, Llc Tile and support structure
US10711460B2 (en) 2013-10-25 2020-07-14 Mbrico, Llc Tile and support structure
US10934714B1 (en) 2013-10-25 2021-03-02 Mbrico, Llc Tile and support structure
US10988931B1 (en) 2013-10-25 2021-04-27 Mbrico, Llc Tile and support structure
US11199007B2 (en) 2013-10-25 2021-12-14 Mbrico, Llc Tile and support structure
US11371245B2 (en) 2013-10-25 2022-06-28 Mbrico, Llc Tile and support structure

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US2867301A (en) * 1956-07-26 1959-01-06 Joseph H Benton False flooring system
US3180460A (en) * 1960-09-16 1965-04-27 Liskey Aluminum Floor panel for elevated flooring
US3236485A (en) * 1964-03-12 1966-02-22 Miller Herman Inc Furniture base

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US2867301A (en) * 1956-07-26 1959-01-06 Joseph H Benton False flooring system
US3180460A (en) * 1960-09-16 1965-04-27 Liskey Aluminum Floor panel for elevated flooring
US3236485A (en) * 1964-03-12 1966-02-22 Miller Herman Inc Furniture base

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425179A (en) * 1967-02-15 1969-02-04 Victor G Haroldson Elevated flooring
US3877189A (en) * 1973-10-09 1975-04-15 Helmut Mauell Lattice assembly, e.g. for mosaic tiles, electrical circuit elements and display systems
US3910051A (en) * 1974-05-03 1975-10-07 Joseph A Komisarek Leaching system cavity of preformed components
US4074488A (en) * 1974-06-05 1978-02-21 Liskey Archectural Mfg. Inc. Elevated floor assembly
US4016694A (en) * 1974-06-12 1977-04-12 Helmut Mauell Snap-connectable lattice assembly for electrical-circuit tiles
US4573299A (en) * 1982-12-10 1986-03-04 Forbo-Teppichwerk Ag Floor covering article
EP0135240A2 (en) * 1983-09-21 1985-03-27 "C.B.R. Béton" Self-supporting slab for a false floor
EP0135240A3 (en) * 1983-09-21 1986-03-19 "C.B.R. Béton" Self-supporting slab for a false floor
US4571200A (en) * 1984-11-15 1986-02-18 Mattel, Inc. Modular toy building set
EP0219985A3 (en) * 1985-09-27 1988-08-10 Intek Floors Limited Concrete slab for a platform floor
EP0219985A2 (en) * 1985-09-27 1987-04-29 Intek Floors Limited Concrete slab for a platform floor
US4914881A (en) * 1986-01-10 1990-04-10 Techfloor Pty. Ltd. Access flooring system
US4843781A (en) * 1986-07-18 1989-07-04 Chase Iii Francis H Composite access floor panel
US4748789A (en) * 1986-07-21 1988-06-07 Hedley Gilbert P Access floor panel
WO1988007612A1 (en) * 1987-03-23 1988-10-06 Farley Metals, Inc. Elevated floor plate
US4825603A (en) * 1987-03-23 1989-05-02 Farley, Inc. Elevated floor plate
US4745715A (en) * 1987-03-23 1988-05-24 Farley Metals, Inc. Elevated floor plate
USRE35369E (en) * 1989-02-03 1996-11-05 Guilford (Delaware) Inc. Flooring system especially designed for facilities which house data processing equipment
US5052157A (en) * 1990-02-02 1991-10-01 Servoplan, S.A. Flooring system especially designed for facilities which house data processing equipment
US5074085A (en) * 1990-03-20 1991-12-24 Fukuvi Chemical Industry Co., Ltd Panel for use in double floors
US5499476A (en) * 1993-08-31 1996-03-19 Interface, Inc. Low profile raised panel flooring with metal support structure
US5673522A (en) * 1994-03-25 1997-10-07 Guilford, Inc. Junction box forlow profile raised panel flooring
USRE39097E1 (en) 1994-03-25 2006-05-23 Guildford (Delaware), Inc. Metal support framework for low profile raised panel flooring
US5675950A (en) * 1994-03-25 1997-10-14 Guilford (Delaware), Inc. Metal support framework for low profile raised panel flooring
US5713168A (en) * 1994-03-25 1998-02-03 Guilford (Delaware), Inc. Junction box for low profile raised panel flooring
US5828001A (en) * 1995-02-15 1998-10-27 Guilford (Delaware), Inc. Plastic junction box with receptacle boxes
US5640821A (en) * 1995-10-05 1997-06-24 Koch; Charles P. Plastic connector plug for modular floor
US6519902B1 (en) 2001-10-05 2003-02-18 Maxcess Technologies, Inc. Heavy-duty floor panel for a raised access floor system
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