Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS3222030 A
Publication typeGrant
Publication dateDec 7, 1965
Filing dateJun 22, 1964
Priority dateJun 22, 1964
Publication numberUS 3222030 A, US 3222030A, US-A-3222030, US3222030 A, US3222030A
InventorsThorpe William J
Original AssigneeUnistrut Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Floor structure elevating device
US 3222030 A
Previous page
Next page
Description  (OCR text may contain errors)

Dec. 7, 1965 w. J. THORPE 3,222,030


WILLIAM J. THORPE United States Patent 3,222,030 FLOOR STRUCTURE ELEVATING DE 16E William J. Thorpe, Dearborn, Mich, assignor to Unistrut Corporation, Wayne, Mich, a corporation of Michigan Filed June 22, 1964, Ser. No. 383,537 3 Claims. (Cl. 254-100) The present application is a continuation-in-part of my co-pending application Ser. No. 187,389 filed April 13, 1962 and now abandoned.

The present invention relates to elevated floor structures and more particularly to an improved means of providing a gridwork of framing members in an elevated position. The recent increase in the use of computer and data processing equipment as well as similar heavy electronic equipment has greatly increased the use of elevated and supplemental floor structures. The primary purpose of such a supplemental floor is to provide space between the floors for the complex power and transmission cables necessary for such equipment. Such a supplemental floor structure must meet at least three major requirements. It must be capable of supporting heavy, unequally distributed weight loads. It must maintain absolute level floor conditions to insure proper equipment operation. And it must permit ready accessibility for servicing and rearrangement of the equipment. Provision for such a supplemental floor structure generally is made by providing an auxiliary gridwork of framing members supported on leveling jacks above the normal building floor and by the provision of rigidly structured, removable panels carried by the gridwork.

It is apparent that to meet the first two of these requirements it is necessary to provide a means for securely locking the framing members making up the gridwork to the leveling jacks so that the supplemental flooring cannot be pulled away from the leveling jacks by remotely positioning heavy equipment to produce an unlevel floor. In addition to these requirements it is desirable that the means for securing the framing members to the leveling jacks be such that only a minimum of tools and skills are required to erect the flooring structure.

The present invention provides an improved elevated floor structure combination which includes leveling jacks and channel shaped structural members which form a supporting gridwork for carrying the removable panel members. The leveling jack is provided with a supporting plate having a plurality of upwardly extending ears or lugs. The channel shaped struts are arranged and supported on the supporting plate in a level, abutting relationship. The'ears or lugs of the floor leveling jacks extend upwardly into the channels provided in the framing members and engage above inturned flanges provided in the framing members to securely lock the framing members against the face of the supporting plate.

It is an object then of the present invention to improve elevated floor structures by providing an improved floor leveling jack and structural framing member combination assembled to provide a panel carrying gridwork to support heavy, unequally distributed weight loads and to maintain absolute level floor conditions.

It is another object of the present invention to prevent heavy unequally distributed weight loads on an elevated floor structure from pulling the gridwork forming framing members from the floor leveling jacks of such a structure by providing an improved means for securely locking the framing members to the supporting plate of the floor leveling jack.

It is still another object of the present invention to facilitate the erection and assembly of elevated floor structures by providing a floor leveling jack and fram- 3,222,030 Patented Dec. 7, 1965 ing structure gridwork combination in which a minimum of tools and skills are required to securely lock the jacks to the framing structure.

Still further objects and advantages of the present invention will readily occur to one skilled in the art to which the invention pertains upon reference to the following drawings in which like reference characters refer to like parts throughout the several views and in which,

FIG. 1 is a perspective view of an improved floor leveling jack and framing structure gridwork combination of the present invention,

FIG. 2 is an exploded perspective view of the floor leveling jack illustrated in FIG. 1 and with the framing members removed,

FIG. 3 is an enlarged vertical sectional view taken substantially on line 3-3 of FIG. 1, and

FIG. 4 is a fragmentary detailed showing in dashed lines how a framing member first is set on the floor leveling jack of the present invention and in solid lines how it is locked thereto.

Now referring to the drawing for a more detailed description of the present invention a preferred floor leveling jack is therein illustrated as comprising a framing member supporting plate 5 having perimetrically-integrated, locking lugs or ears 6. The plate 5 is preferably secured to a bolt 7 mounting a nut 8 for telescopical adjustment on a post 9 fixed to a position base plate 10.

The supporting plate 5 is preferably provided with a planar horizontally extending supporting surface and is preferably constructed of a square section of heavy gage steel, perimetrical portions of which are struck up from the supporting surface to form the lugs or ears 6. The lugs or ears 6 are preferably located substantially medially of each plate edge and extend above the supporting surface of the plate approximately one-half of an inch. The opposite lateral edges of the lugs or ears 6 are formed with recesses 11 as best seen in FIG. 4.

The framing members 14 are each preferably in the form of elongated channel members having a pair of elongated parallel walls 13 joined by an elongated connecting section 17. The free longitudinal edge of each of the walls 14 is bent inwardly to form short sections 16 substantially normal to the respective parallel walls 13 and substantially parallel to the section 17. The free edges of the section 16 are preferably bent inwardly as at 12 to define flange portions 18. The flange portions 18 are substantially parallel with the walls 13.

As best illustrated in FIG. 4 the framing members 14 are adapted to be carried on the supporting plate 5 with the surface of the sections 16 in engagement with and supported by the plate 5. The ears or lugs 6 are dimensioned such that upon movement of the framing members 14 from the position shown in dashed lines in FIG. 4 to the position shown in solid lines the flange portions 18 of the framing members 14 engage beneath the outwardly extending portions of the lugs or ears 6 formed by the recesses 11 so that the framing members are securely locked to the supporting plate 5 of the floor-leveling jack. In this way, as illustrated in FIG. 1, a plurality of framing member 14 are securely locked to the supporting plate 5 in abutting relationship to provide a planar gridwork for supporting removable panels (not shown).

A nut 19 is secured to the underface of the plate 5. The bolt 7 is screwed into the nut 19 and mounts the nut 8 for contactive positioning on the post 9 with the bolt 7 telescoped into the post 9. The post 9 is preferably a short section of fairly heavy gage steel tubing bonded at the one end to the base plate 10 substantially centrally thereof. The inside diameter of post 9 is enough larger than the outside diameter of the bolt 7 to permit the latter to easily telescope into the post 9.

In assembling and erecting the gridwork for the elevated floor structure of the present invention the framing members 14 of the kind herein illustrated and described are preferably laid out on a building floor where the electronic equipment is to be installed for operation. The floor leveling jacks then are assembled and set in place and the nut 8 adjusted to so dispose the plates that when the framing members 14 are secured in place the framework for the supplemental floor will be spaced the desired distance from the building floor. The leveling jacks generally will be approximately 2 or 3 feet apart to accommodate the gridwork to the conventional panels especially structured for supplemental floors of this kind.

Once the jacks have been properly located, the longer framing members 14 will be set along a series of jacks with the inwardly turned flange portions 18 of the framing members 14 resting on the top rounded end of diametrically opposed lugs or ears 6 on the respective plates 5 as shown in dashed outline in FIG. 4. A blow of a mallet on the framing member 14, directly over each plate 5, will spread the framing member walls 13 to displace the flange portions 18 at the point of contact with the corner of the lugs or ears 6, just enough to force the flange portions 18 down into the lug recesses 11 as shown in full outline in FIG. 4.

The longer runs of the framing members 14 being secured in place on the plates 5 of a series of jacks, the short cross framing members 14 then may be set on one of the free lugs 6 of adjacent jacks and forced into locking engagement with the supporting plate 5 as wasdone with the longest framing members 14.

In due course, the nut 8 on the respective jacks will be turned to bring the framework into perfect level for the subsequent setting of the floor panels and eventual installation of the electronic equipment.

It is apparent that an elevated floor structure has been provided which can be readily assembled with a minimum of tools and skills. Because the framing members 14 are securely locked to the support plate 5 by the lugs or ears 6, unequally distributed equipment cannot pull the framing members 14 upwardly away from the support plate 5 and thereby produce an unlevel floor condition. Further, since the framing members 14 are carried in a planar abutting relationship on the upper surface of the support plate 5 the provision of floor panels above the gridwork formed by the framing members 14 will provide a planar floor which can be readily adjusted by the leveling jacks to produce absolute level conditions.

It is also apparent that although I have described but a single embodiment of my invention many changes and modifications can be made therein without departing from the spirit of the invention as expressed by the appended claims.

I claim:

1. In combination (a) a pair of channel shaped framing members each having a pair of longitudinally extending coplanar inturned flanges, the free edges of said inturned flanges being turned inwardly at substantially right angles to said inturned flanges to define a longitudinal recess therebetween,

(b) a plate having a planar surface for supporting said framing members in abutting and substantially coplanar position,

(c) said plate having a plurality of lugs formed of portions struck upwardly from said plate and extending upwardly from said surface and into said recess, each of said lugs being provided with upper lateral outwardly extending portions dimensioned to embracively engage said free edges of said inturned flanges and to urge said inturned flanges against said surface of said plate,

(d) a positioning base plate, and

(e) a threaded bolt and nut connection interposed between said plates to aflect their vertical relationship.

2. A floor leveling jack and framing member combination comprising (a) a framing member supporting plate having a planar surface for supporting at least two of said framing members in a coplanar and abutting positioning,

(b) said framing members each having a pair of longitudinally extending coplanar inturned flanges, the free edges of said inturned flanges being turned inwardly at substantially right angles to said inturned flanges to define a longitudinal recess therebetween,

(c) means formed of portions struck upwardly from said plate and extending upwardly from said surface and into said recess, said struck upwardly portions being provided with upper lateral outwardly extending portions dimensioned to embracively engage said free edges of said inturned flanges and to urge said inturned flanges against said surface of said plate, and

' (d)1means for adjusting the vertical position of said p ate.

3. The combination as defined in claim 2 and in which said last mentioned means comprises (a) a positioning base plate, and

(b) a threaded bolt and nut connection interposed between said plates to effect their vertical spaced relationship.

References Cited by the Examiner is UNITED STATES PATENTS 2,495,870 1/1950 Soukup 24-204 X 3,150,748 9/1964 Liskey 18934 FOREIGN PATENTS 1,290,765 3/1962 France.

WILLIAM FELDMAN, Primary Examiner. MILTON S. MEHR, Examiner,

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2495870 *Nov 6, 1944Jan 31, 1950Lockheed Aircraft CorpTrim attaching device
US3150748 *Sep 16, 1960Sep 29, 1964Liskey AluminumElevated sectional floor
FR1290765A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3292892 *Oct 14, 1965Dec 20, 1966Abbott Oscar JAdjustable form shore
US3324614 *Feb 19, 1965Jun 13, 1967Interlake Steel CorpElevated flooring system
US3425179 *Feb 15, 1967Feb 4, 1969Haroldson Victor GElevated flooring
US3499251 *Oct 25, 1967Mar 10, 1970Blohm Voss AgRoom or cabin space partitioning system
US3503166 *Mar 22, 1968Mar 31, 1970Yosh Nakazawa & Associates IncArchitectural system of interior modular construction
US3831329 *Dec 30, 1970Aug 27, 1974Glen Crete Prod CoBuilding construction system
US3899857 *Dec 12, 1973Aug 19, 1975Mochizuki MitsuoFraming element and its supporting device for laying interior boarding on foundation structure
US3900995 *Aug 29, 1973Aug 26, 1975Kurt EhrenbergAdjustable substructure for installing sheet roof
US3968605 *Dec 27, 1974Jul 13, 1976Aluminum Company Of AmericaAdjustable column for buildings
US3984732 *Aug 21, 1975Oct 5, 1976Michael Joseph PodreccaHose guide
US4405111 *Apr 22, 1981Sep 20, 1983Lennon Thomas CInterjoist support
US4409763 *Mar 23, 1981Oct 18, 1983Rydeen Robert JPost and beam building
US4533055 *Jun 2, 1982Aug 6, 1985Walker-Neer Manufacturing Co., Inc.Storage rack for drilling tubulars
US4581863 *Sep 6, 1984Apr 15, 1986Kenneth ThalerRoof anchor and support
US4709474 *Dec 12, 1986Dec 1, 1987Eckert Bruce MTractor dual wheel remover
US4743039 *Oct 14, 1986May 10, 1988Ellis James FGrand piano action cradle
US4745791 *Sep 22, 1986May 24, 1988Maker Manufacturing Company, Inc.Portable kit assembly for straightening automobiles
US4870789 *Jan 4, 1988Oct 3, 1989Clark Steven JManufactured building adjustable leveling and support device
US4895335 *Apr 24, 1989Jan 23, 1990James OliverBottom adjusting load support
US4937989 *Apr 10, 1989Jul 3, 1990Urban MiyaresLocking brace for uniting mobile home sections through their undercarriage I-beams
US4942708 *Aug 15, 1989Jul 24, 1990Wenger CorporationPanel assembly and support structure for elevated floors
US4996818 *Feb 22, 1989Mar 5, 1991Bettinger West, Inc.Floor tile for a raised access floor system
US5036570 *Jan 16, 1991Aug 6, 1991Chrysler CorporationVehicle rear deck filler panel mounting structure
US5036586 *Jan 16, 1991Aug 6, 1991Chrysler CorporationMethod of mounting a rear deck filler panel on a vehicle
US5048242 *Apr 4, 1990Sep 17, 1991C-Tec, Inc.Access floor system with hemmed edge panel
US5232204 *Oct 30, 1992Aug 3, 1993Norman NunezHeavy duty house joist support kit
US5314161 *May 29, 1992May 24, 1994Bochumer Eisenhutte Heintzmann Gmbh & Co. KgMine prop
US5727767 *Apr 8, 1996Mar 17, 1998Jefrey; Lester G.Mobile home support stand
US5772356 *Feb 21, 1997Jun 30, 1998Collins; Samuel W.Adjustable column connector apparatus
US5791096 *Mar 7, 1997Aug 11, 1998Chen; KingbowRaised floor supporting structure
US5816562 *Oct 11, 1996Oct 6, 1998Symons CorporationSand jack apparatus
US5819482 *Aug 21, 1997Oct 13, 1998D.F. Foreman Enterprises Ltd.Structural support column with a telescopically adjustable head
US5904009 *Dec 1, 1997May 18, 1999Huang; Chien-TehShock-resistant floor-supporting strut unit which can bear a heavy load thereon
US5983582 *Mar 5, 1997Nov 16, 1999At&T Corp.Seismic resistant equipment platforms
US6122811 *Dec 22, 1998Sep 26, 2000Shirley; Samuel C.Drive train support tool
US6219981May 1, 2000Apr 24, 2001Philip R. BergeltLightweight support pier
US6256939 *Oct 7, 1999Jul 10, 2001William S. SnyderSupport member for a floor beam of a building
US6347489Oct 2, 2000Feb 19, 2002Chester R. Marshall, Jr.Storm anchor system including foundation column with adjustable saddle-type positioning members
US6349512 *Apr 15, 1999Feb 26, 2002Steel Floors, LlcAdjustable support post
US6363685 *May 19, 2000Apr 2, 2002William E. KuglerMethod and apparatus for selectively adjusting the elevation of an undulating or plannar surface
US6637161Nov 28, 2000Oct 28, 2003Steelcase Development CorporationFloor system
US6863253 *Oct 9, 2003Mar 8, 2005Valentz Family Limited PartnershipSupport base for equipment
US7130521Aug 20, 2004Oct 31, 2006Gs Metals Corp.Cable guide
US7506598 *Sep 22, 2005Mar 24, 2009Michael Ray KimbleFitted deck for boat, yacht or ship
US7726631 *Dec 29, 2008Jun 1, 2010Noe Valerie CDisposer installation tool
US8001733 *Dec 4, 2009Aug 23, 2011Min ChenAdjustable jack post
US8112947 *Feb 8, 2006Feb 14, 2012Kingspan Holdings (Irl) LimitedPedestal head
US8206063 *Dec 7, 2009Jun 26, 2012Steven PattonConcentrically loaded, adjustable piering system
US8365475 *Apr 16, 2010Feb 5, 2013Petar ZlatarReadily adjustable and lockable pedestal for an access floor assembly
US8393127 *Apr 12, 2010Mar 12, 2013Kyle R. JensenRelocatable restaurant and associated methods
US8490342 *Feb 15, 2008Jul 23, 2013Alan Sian Ghee LeeBatten/joist support
US20100058679 *Feb 15, 2008Mar 11, 2010Alan Sian Ghee LeeBatten/joist support
US20100166504 *Dec 7, 2009Jul 1, 2010Steven PattonConcentrically Loaded, Adjustable Piering System
US20120073218 *Apr 16, 2010Mar 29, 2012Petar Zlatarreadily adjustable and lockable pedestal for an access floor assembly
US20130320161 *May 31, 2013Dec 5, 2013Hilti AktiengesellschaftSupport foot for applying and distributing forces to a pressure-sensitive substrate as well as a stand system having such a support foot
DE3721195A1 *Jun 26, 1987Jan 5, 1989Rheinhold & Mahla GmbhFalse-floor grid system
DE3721195C2 *Jun 26, 1987Feb 11, 1999Rheinhold & Mahla AgDoppelboden-Rastersystem
EP0325051A2 *Dec 21, 1988Jul 26, 1989Ronald William Stanley HarveyImprovements in or relating to a suspended floor
EP0950776A1 *Mar 26, 1999Oct 20, 1999Fa. Heinz, StallApparatus for laying a floor covering, in particular floor plates
WO1990002018A1 *Aug 19, 1988Mar 8, 1990Ten Press IncInternal piston press
WO2011156615A1 *Jun 9, 2011Dec 15, 2011Duane ArmijoFloor leveling system
U.S. Classification254/100, 248/354.3, 254/133.00R, 52/126.6
International ClassificationE04F15/024
Cooperative ClassificationE04F15/02452
European ClassificationE04F15/024D2