US3383822A - Grating - Google Patents

Grating Download PDF

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Publication number
US3383822A
US3383822A US514485A US51448565A US3383822A US 3383822 A US3383822 A US 3383822A US 514485 A US514485 A US 514485A US 51448565 A US51448565 A US 51448565A US 3383822 A US3383822 A US 3383822A
Authority
US
United States
Prior art keywords
grating
bars
strips
grooves
wear strips
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US514485A
Other languages
English (en)
Inventor
George A Vichmann
Dennis A A Sedgley
Browning Wayne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EMEH Inc
Original Assignee
Construction Specialties Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24047366&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US3383822(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Construction Specialties Inc filed Critical Construction Specialties Inc
Priority to US514485A priority Critical patent/US3383822A/en
Priority to GB53205/66A priority patent/GB1103019A/en
Priority to NL6616827A priority patent/NL6616827A/xx
Priority to FR87756A priority patent/FR1505144A/fr
Priority to BE691373D priority patent/BE691373A/xx
Application granted granted Critical
Publication of US3383822A publication Critical patent/US3383822A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06—Gully gratings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/42—Gratings; Grid-like panels
    • E04C2/421—Gratings; Grid-like panels made of bar-like elements, e.g. bars discontinuous in one direction
    • E04C2/422—Gratings; Grid-like panels made of bar-like elements, e.g. bars discontinuous in one direction with continuous bars connecting at crossing points of the grid pattern
    • E04C2/425—Gratings; Grid-like panels made of bar-like elements, e.g. bars discontinuous in one direction with continuous bars connecting at crossing points of the grid pattern made of perforated bars
    • 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
    • E04F15/02161—Floor elements with grooved main surface
    • E04F15/02166—Floor elements with grooved main surface wherein the grooves are filled with inserts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F19/00—Other details of constructional parts for finishing work on buildings
    • E04F19/10—Built-in gratings, e.g. foot-scrapers

Definitions

  • a grating includes a plurality of elongated support bars, each bar having a base ilange, a top flange and a connecting web having a bi-concavical shape, and key members for connecting the support bars together in substantially parallel, spaced-apart relation.
  • the grating further includes a plurality of wear strips which are removably attached to the support bars by longitudinally extending grooves formed in the top anges of the bars.
  • This invention relates to gratings and, more particularly, to a novel and improved grating for installation in openings in sidewalks, streets, floors or buildings and the like.
  • gratings often comprise either a metal casting which has a plurality of openings or which has interconnected crossed series of spaced-apart plates or strips.
  • gratings of the metal casting type are expensive to produce inasmuch as molds are required for each sizecast grating.
  • Gratings made up of spaced-apart metal bars are also costly, the means for connecting the bars being complicated and time-consuming to assemble, requiring, for example, riveting, bolting or welding of a large number of elements to connect them.
  • a novel and improved iloor grating comprising a plurality of elongated support elements or bars of generally I or T-shaped cross-section having a base flange, a top ilange and a connecting web, and key members for connecting the support elements together in substantially parallel, spacedapart relation.
  • the key members com- 3,333,822, Patented May 21, 1968 prise elongated metal strips or bars of generally rectangular cross-section which are inserted through the aligned openings in the webs of the grating bars and then are twisted to engage the Webs of the bars in locking relationship and maintain the support elements in substantially parallel spaced-apart relation.
  • the grating further comprises a plurality of wear strips which cover and are removably attached to the grating bars by longitudinally extending grooves formed in the top ilanges of the bars.
  • Each groove is generally an inverted keystone-shape in cross-section deiined by a longitudinally extending base, side walls which diverge obliquely from the base toward the top of the groove and longitudinally extending ilanges which extend inwardly beyond the side walls of the groove.
  • the wear strips have ribs which are received in the grooves of the support elements and are generally complementary to the grooves and cover portions which are substantially coextensive with the top anges of the grating bars.
  • the construction of the wear strip is such -that the wear strip can be rolled or pressed into the grooves and when so inserted the connecting web of the wear strip is pulled downwardly and the cover portion is held flat against the surface of the top tlange of the grating bar.
  • the grating bars of the grating are best formed by extrusion of a suitable material, such as bronze or aluminum. The extrusions are then sheared at suitable intervals to provide bars of the desired length.
  • the key members which interconnect the support elements are also best formed by extrusion, and the spacing slots of the key members which engage the webs of the grating bars may be stamped, cut or otherwise formed at appropriate and accurate spacings, depending upon the type of grating desired.
  • the wear strips which are preferably made of a desirable plastic, such as a vinyl plastic, by molding or extrusion, and then installed by rolling or pressing their lower ribs into the grooves of the support members and the grating is thus completed.
  • a desirable plastic such as a vinyl plastic
  • the yfabrication of the parts and the assembly of the complete grating, as described above, are highly efiicient and simple ⁇ for the reason that the key members are of one part structure and a locking relationship and alignment and spacing of the support elements are effected merely Eby inserting and twisting the key members.
  • a l'Wide variety of bar spacings can be provided so that the purchaser of such a grating is not limited in his choice to a particular standard grating as he would lbe if he chose to buy cast or similar gratings.
  • Another important advantage of the grating is that the wear strips, because they can be pressed or rolled into the grooves of the support elements, can ⁇ be replaced easily -when they become w-orn.
  • FIGURE l is a View in cross section of the grating, not in locking relationship, and with the wear strips removed from the support elements;
  • the key members 18 comprise elongated metal strips inserted through aligned key bed openings ⁇ 22 in the connecting webs 16 of the support elements and then twisted to receive the connecting webs 16 0f the support elements -10 in locking relationship and maintain the support elements 1i) in substantially parallel spaced-apart relation as shown in ⁇ -FiGURES 3 and 4.
  • the key members 18 are spacing bars which comprise a rod-like center member 28, substantially rectangular side members and 32, and substantially rectangular notches or cutouts 34 of about the same or slightly less width than the web 16 for aligning the key members 18 Iwith the bars 1li.
  • the key members 18 are pushed through the key bed openings '22 in the webs 16 of a plurality of the bars 10, the openings 22 being generally complementary in shape to the key members 13.
  • the cutouts 34 are aligned 'with the openings 22 in the connecting webs d5 (FlG- URES 1 and 2).
  • the key members 18 are gripped between the .bars ⁇ 1G and rot-ated or twisted about 90 until a locking relationship is attained between the key members 18 and the connecting webs 16.
  • the connecting webs 16 have concavities or shallow concave grooves 31S and 36 in their opposite sides.
  • the spacing slots G4 are preferably of rectangular cross section and wider than the portion of the web between .the grooves ⁇ 35 and 36 in the -web dd, the key members can be rotated relatively freely until the key member is turned tirough an angle of about Thereafter the key member 18 engages the web 16 above and below the grooves 3S and 36. ⁇ Due to the tight lit of the web 15s in the notches 34, sculling of the web occurs which results in -a tight interlock between the key members and the grating bars.
  • T he grating further comprises wear strips 24, removably attached to the bars 10 by longitudinally extending grooves 26 formed in the top flanges ⁇ 14 of the -bars di?.
  • Each of the grooves 26 of bars 10 comprises a longitudinally extending base 37, obliquely diverging side walls 38 and 40 and inwardly extending flanges 42 and 44 having diverging curved surfaces 45 and 46 merging with upper surface of the top flange
  • the wear strips 24 have outwardly extending generally triangular ribs 47 which are received in the grooves 25, Connecting webs 48 on the strips 24 extend between the flanges 42 and 44 and are united with the cover strips 50 which cover the top lilange 14.
  • the wear strips '24 are preferably made by molding or extrusion of a moderately resilient elastomer or polymer. Vinyls are preferred inasmuch as they are highly durable and provide .for a long, useful service.
  • cover strips 50 may have circular upper surfaces, rectangular upper surfaces, or may be provided twith longitudinal grooves in their upper surfaces.
  • the installation of the strips 24 can be accomplished merely by rolling or pressing the strips 214 into the grooves 26 so that the ribs 47 snap beneath the flanges 4 2 and 44 thereby locking the cover strips to the bars.
  • Replacement is accomplished by prying one end of the strip from a groove and then peeling the wear strip 24 out of the grooves 26. Because of this, the replacement of worn out wear strips and installation of new strips is greatly facilitated even where gratings having extended lengths are concerned.
  • the above-described structure of the support elements 10 and the wear strips 24- of the grating accordingly provides for a firm, but at the same time, readily removable attachment of the wear strips 24 to the support elements 1t! and worn-out wear strips are easily removed and replaced by new ones which can be rolled or pressed into the support elements 1t).
  • the foregoing features of the easy replacement and attachment of the wear strips and the assembly of the grating bars with key members of one-piece part structure which can be accurately machined to close tolerances preventing unequal spacing or out-of-'parallelism of the grating bars are important advantages of the "rating of this invention.
  • a grating for openings in floors, streets, sidewalks and the like comprising a plurality of support bars, each of said bars having a top flange and a connecting web, each connecting web having concavities formed in the opposite sides thereof and extending along the length of said web, said web having thickened portions above and below the concavities and a centrally located thinned portion between the concavities and with key bed openings extending along the length of the concavities, and a plurality of key members extending transversely through the key bed openings in said connecting webs, each key member having a center member and side members containing notches dividing said side members into a plurality of spacing elements spaced from each other by a distance greater than the web thickness at said thinned portion and less than the thickness of the thickened portions of the connecting webs for frictionally engaging the thickened portions of the connecting webs in locking relation ship when said key member is rotated from the position it is received in said openings.
  • a grating according to claim 1 further comprising a plurality of unitary wear strips, each strip covering and removably attached to the top flange of each support bar.
  • each of the said support bars comprises a longitudinally extending groove formed in said top Iflange, said groove having a longitudinally extending base, upwardly diverging side walls, and longitudinally extending flanges which extend inwardly beyond the side walls of said groove and wherein each of said wear strips comprises a rib formed along the lower surface of said groove, a web positioned between the top flanges of said support bars and a cover member flaring laterally out from said web and substantially coextensive with said top flanges of said bars.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sewage (AREA)
  • Soil Working Implements (AREA)
US514485A 1965-12-17 1965-12-17 Grating Expired - Lifetime US3383822A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US514485A US3383822A (en) 1965-12-17 1965-12-17 Grating
GB53205/66A GB1103019A (en) 1965-12-17 1966-11-28 Grating
NL6616827A NL6616827A (en(2012)) 1965-12-17 1966-11-29
FR87756A FR1505144A (fr) 1965-12-17 1966-12-16 Grille pour sol
BE691373D BE691373A (en(2012)) 1965-12-17 1966-12-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US514485A US3383822A (en) 1965-12-17 1965-12-17 Grating

Publications (1)

Publication Number Publication Date
US3383822A true US3383822A (en) 1968-05-21

Family

ID=24047366

Family Applications (1)

Application Number Title Priority Date Filing Date
US514485A Expired - Lifetime US3383822A (en) 1965-12-17 1965-12-17 Grating

Country Status (5)

Country Link
US (1) US3383822A (en(2012))
BE (1) BE691373A (en(2012))
FR (1) FR1505144A (en(2012))
GB (1) GB1103019A (en(2012))
NL (1) NL6616827A (en(2012))

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3765136A (en) * 1970-08-28 1973-10-16 Lionweld Ltd Grids, gratings or like open work support surfaces or floors
US4112640A (en) * 1977-12-05 1978-09-12 Construction Specialties, Inc. Foot grille
US4276728A (en) * 1979-09-20 1981-07-07 Balco, Inc. Dirt removing grid system for floors
US4568587A (en) * 1981-09-25 1986-02-04 Balco, Inc. Roll-up floor mat with rigid rails
US4727704A (en) * 1987-05-07 1988-03-01 Fibergrate Corporation Grating structure and method for assembly
US4903444A (en) * 1988-10-03 1990-02-27 Berndt Jr Fred P Floor grating
US5133123A (en) * 1988-11-18 1992-07-28 Stewart-Decatur Security Systems, Inc. Security gratings and methods of making bars therefor
US5195292A (en) * 1990-12-17 1993-03-23 Pawling Corporation Resiliently mounted rigid floor grating
US5243804A (en) * 1991-03-20 1993-09-14 Jean-Francois Clement Floor with carrier slats made from surface slats
WO1993020301A1 (en) * 1992-04-04 1993-10-14 Structural Plastics Ltd. Structural support system and method for its manufacture
US5486392A (en) * 1994-07-05 1996-01-23 Reese Enterprises, Inc. Roll-up floor mat
USD374728S (en) 1995-03-03 1996-10-15 Kadee Industries, Inc. Floor grate
GB2303653A (en) * 1995-07-27 1997-02-26 Mita Grating
US5852902A (en) * 1997-07-01 1998-12-29 Balco Metalines, Inc. Locking entry grid
US20060016637A1 (en) * 2004-07-26 2006-01-26 Irvin Grady J Elevated work platform
JP2015048579A (ja) * 2013-08-29 2015-03-16 片岡産業株式会社 グレーチング
US8997432B2 (en) 2009-04-29 2015-04-07 E.M.E.H., Inc. Modular entrance floor system
CN104832778A (zh) * 2015-05-12 2015-08-12 天长市飞龙金属制品有限公司 一种钢格板用扁钢及应用所述扁钢的钢格板
USD744119S1 (en) 2013-10-25 2015-11-24 E.M.E.H., Inc. Portion of an entrance floor
JP2021038628A (ja) * 2019-09-02 2021-03-11 グリーン プラス カンパニー，リミテッド プレハブ格子

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3317410A1 (de) * 1983-05-13 1984-11-15 Erich 5900 Siegen Arens Rost zur bildung von laufmatten oder fussabstreifern

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB371147A (en) * 1931-03-31 1932-04-21 Karl Wladimir Branczik Improvements in or relating to a method and means of making gratings, metallic floorings and similar gridwork
US1946035A (en) * 1932-09-12 1934-02-06 Henry C Reuter Grating
US2082197A (en) * 1933-03-25 1937-06-01 Beulah H Bates Grating
US2181812A (en) * 1937-08-06 1939-11-28 Fred W Kammerer Door saddle
US2275105A (en) * 1937-12-29 1942-03-03 Gerald G Greulich Grating structure
US2404570A (en) * 1944-10-11 1946-07-23 Carnegie Illinois Steel Corp Structural grating
GB909988A (en) * 1960-04-21 1962-11-07 Reliance Steel Prod Co Grating

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB371147A (en) * 1931-03-31 1932-04-21 Karl Wladimir Branczik Improvements in or relating to a method and means of making gratings, metallic floorings and similar gridwork
US1946035A (en) * 1932-09-12 1934-02-06 Henry C Reuter Grating
US2082197A (en) * 1933-03-25 1937-06-01 Beulah H Bates Grating
US2181812A (en) * 1937-08-06 1939-11-28 Fred W Kammerer Door saddle
US2275105A (en) * 1937-12-29 1942-03-03 Gerald G Greulich Grating structure
US2404570A (en) * 1944-10-11 1946-07-23 Carnegie Illinois Steel Corp Structural grating
GB909988A (en) * 1960-04-21 1962-11-07 Reliance Steel Prod Co Grating

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3765136A (en) * 1970-08-28 1973-10-16 Lionweld Ltd Grids, gratings or like open work support surfaces or floors
US4112640A (en) * 1977-12-05 1978-09-12 Construction Specialties, Inc. Foot grille
US4276728A (en) * 1979-09-20 1981-07-07 Balco, Inc. Dirt removing grid system for floors
US4568587A (en) * 1981-09-25 1986-02-04 Balco, Inc. Roll-up floor mat with rigid rails
US4727704A (en) * 1987-05-07 1988-03-01 Fibergrate Corporation Grating structure and method for assembly
US4903444A (en) * 1988-10-03 1990-02-27 Berndt Jr Fred P Floor grating
US5133123A (en) * 1988-11-18 1992-07-28 Stewart-Decatur Security Systems, Inc. Security gratings and methods of making bars therefor
US5195292A (en) * 1990-12-17 1993-03-23 Pawling Corporation Resiliently mounted rigid floor grating
US5243804A (en) * 1991-03-20 1993-09-14 Jean-Francois Clement Floor with carrier slats made from surface slats
WO1993020301A1 (en) * 1992-04-04 1993-10-14 Structural Plastics Ltd. Structural support system and method for its manufacture
US5486392A (en) * 1994-07-05 1996-01-23 Reese Enterprises, Inc. Roll-up floor mat
USD374728S (en) 1995-03-03 1996-10-15 Kadee Industries, Inc. Floor grate
GB2303653A (en) * 1995-07-27 1997-02-26 Mita Grating
US5852902A (en) * 1997-07-01 1998-12-29 Balco Metalines, Inc. Locking entry grid
US20060016637A1 (en) * 2004-07-26 2006-01-26 Irvin Grady J Elevated work platform
US7389856B2 (en) * 2004-07-26 2008-06-24 Irvin Grady J Elevated work platform
US20080251322A1 (en) * 2004-07-26 2008-10-16 Irvin Grady J Elevated work platform
US8997432B2 (en) 2009-04-29 2015-04-07 E.M.E.H., Inc. Modular entrance floor system
JP2015048579A (ja) * 2013-08-29 2015-03-16 片岡産業株式会社 グレーチング
USD744119S1 (en) 2013-10-25 2015-11-24 E.M.E.H., Inc. Portion of an entrance floor
US9340983B2 (en) 2013-10-25 2016-05-17 E.M.E.H., Inc. Entrance floor system
US10722991B2 (en) 2013-10-25 2020-07-28 E.M.E.H., Inc. Entrance floor system
CN104832778A (zh) * 2015-05-12 2015-08-12 天长市飞龙金属制品有限公司 一种钢格板用扁钢及应用所述扁钢的钢格板
JP2021038628A (ja) * 2019-09-02 2021-03-11 グリーン プラス カンパニー，リミテッド プレハブ格子

Also Published As

Publication number Publication date
NL6616827A (en(2012)) 1967-06-19
BE691373A (en(2012)) 1967-05-29
GB1103019A (en) 1968-02-14
FR1505144A (fr) 1967-12-08

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