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Publication numberUS3604173 A
Publication typeGrant
Publication dateSep 14, 1971
Filing dateDec 2, 1968
Priority dateDec 7, 1967
Also published asDE1812381A1
Publication numberUS 3604173 A, US 3604173A, US-A-3604173, US3604173 A, US3604173A
InventorsRune Ingmar Douglas
Original AssigneeRune Ingmar Douglas
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Resilient floor
US 3604173 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

United States Patent [72] Inventor Rune Ingmar Douglas Dahlborg Ripsavagen 57, Bandhagen, Sweden [21] Appl. No. 780,515 [22] Filed Dec. 2, 1968 [45] Patented Sept. 14, 1971 [32] Priority Dec. 7, 1967 [33] Sweden [31] 16836/1967 [54] RESILIENT FLOOR 6 Claims, 2 Drawing Figs.

[52] U.S. C1 52/508, 52/346, 52/480 [51 Int. Cl E04f 15/22 [50] Field of Search 52/346, 347, 364, 366, 378, 393, 688, 480, 508

[56] References Cited UNITED STATES PATENTS 2,370,769 3/1945 Baker et al 52/715 Primary Examiner-Henry C. Sutherland Attorney-Pierce, Scheffler & Parker ABSTRACT: The invention relates to resilient or elastic floors comprising an upper floor supported on a resilient means lying on a support. Said resilient means is built up from a lower layer of resilient elements positioned on the support, an intermediate floor positioned on said lower layer, and an upper layer of resilient elements positioned on the intermediate floor and supporting said upper floor.

RESILIENT FLOOR The present invention relates to resilient or elastically yielding floors, for instance for gymnastic establishments and the like.

In gymnastic and athletic establishments and similar buildings the floor covering is subject to certain requirements, as concerns its ability to yield elastically under load. Even if the problem of providing floors having the necessary resilience may seem simple at a cursory glance the experience shows, however, that the constructions will be expensive, time-consuming in erection and, moreover, to a great extent require a large space. Several designs are known and, usually, the floor is erected on a resilient structure consisting in a complicated system of wooden crossbars arranged on a nonresilient support, for instance on a concrete arch. Such a resilient structure is time-consuming in erection, requires excessive amounts of material and, moreover, requires an unnecessarily large vertical space, often even up to 20 cm. It is easily understood that the high cost in combination with the excessive space requirement of the structure causes an essential rise in price as compared to a conventional, nonresilient floor.

Moreover, it is subject to quite great difficulties to provide a uniform'resilience and an acceptable elasticity irrespective of the point of action on the floor with a resilient floor based on a system of wooden crossbars as described above. Thus, there is a great demand for a cheap resilient floor that can be manufactured at a low price and in a short period of time and, moreover, requires a vertical space comparable to the requirement of conventional, nonresilient floors.

According to the present invention it has now surprisingly been found that a floor with resilience or elasticity comprising an upper floor supported on a resilient means, said resilient means being in turn supported on a support, for instance a concrete arch, can be obtained by making the resilient means from a lower layer of resilient elements supported on the support and evenly distributed thereon, an intermediate floor or diaphragm arranged on said lower layer and an upper layer of resilient elements arranged on the intermediate floor and evenly distributed thereon, the upper floor resting on said upper layer. Particular advantages are gained when the resilient elements in said lower layer are arranged in square formation on the support and the resilient elements in said upper layer are arranged in square formation on the intermediate floor and so displaced relative to the elements of the lower layer that each element of the upper layer lies in the center of the square, at the angles or corners of which the adjacent elements ofthe upper layer are positioned.

In order to facilitate the positioning of the elements on the support and the intermediate floor the resilient elements may be attached to bands, for instance of plastic or textile.

The present invention will now be described more closely to an exemplifying embodiment thereof diagrammatically shown in the appended drawing.

' vertical section adjacent to a wall 3 having a kick ledge 4.

The floor structure proper consists in an upper floor consisting of a lower floor 5 of for instance wood fiber board or a particle board preferably tongued and grooved, and a floor covering 7 consisting of a linoleum mat, milled or textured vinyl plates or the like. The resilient part of the floor structure is based on two layers of resilient elements 9 and 10, respectively, separately by' an intermediate floor or diaphragm 6. Resilient elements 9 are, in the embodiment shown, attached to plastic or textile bands 8, 12 and consist of cork plates or discs.

In FIG. 2-there is shown a plan view of-the floor of FIG. I, the upper floor being removed.IThe resilient elements 9 of the lower layer are indicated with dotted circles inFlG. 2 and said elements 9 of the lowerlayer'are'arranged in a square formation by positioning bands 8 regularly spaced and parallel to each other. The resilient elements 10 of the upper layer in FIG. 2 indicated with full circles are also arranged in a square formation but displacedrelative to the lower layer half a pitch lengthwise and half a pitch crosswise. By. this arrangement everyelement 10 of theupper layer will be positioned at an equal distance from each ofthe adjacentfour elements 9 of the lower layer.

The described embodiment ofzthe floorof the invention is shown in FIG. 1 in scale 1:2 and, thus, it is obviousthat, in spite of the resilient characteristics of the floor, the structural height thereof does not essentially exceed that of a conventional, nonresilient floor. In view of the nonexpensive and simple design of the embodiment described above it may very well be used in floors in ordinary living houses, business and office apartments etc. Thanks toits resiliencethefloor will substantially reduce the tiredness in the legs of the persons staying on the floors in question. Of course, this is of aparticular importance in such applications, where the persons in view of their profession walk over large distances, forinstance in hospitals, shops and the like.

The intermediate floor 6 can consist ofrparticle board or plywood sheets, and the joints between the sheets'may-be suitably fixed with joint profiles 15, for instance ofrigid plastic (FIG, 1).

The embodiment of the floor of the invention shown in FIGS. 1 and 2 has excellent resilience characteristics in view of the fact that the resilience'will-be the same irrespective of the point of action on the floor thanks to the positioning of the elements 9, 10. Thus, the structure is particularly useful in gymnastic, athletic, and similar establishments and. causes,,in view of its simple design, a very small rise in price as compared to conventional, nonresilient floors. As shown in FIG. 1, where the floor is illustrated in scale 1:2, the building height is surprisingly small, in the example shown merelyabout 45 mm. The distance between the resilient elements in each layer may vary within wide limits depending on the particular materials used in the floor. However, in most cases a distance ofabout 15-20 cm. has been found suitable.

The resilient elements 9, 10 of the embodiments described above may, of course, by made of any suitable resilient material. Thus, capsules of plastic similar to those used for closing certain wine bottles may be used with advantage. Such plastic capsules may advantageously be welded with heat on plastic bands, the capsule suitably inthe side wall thereof being provided with holes for increasing the resilience thereof.

The bands carrying the resilient elements 9, 10 may, in. the factory, preferably be attached to both sides of the intermediate floor 6, whereby the. time of work at the site can be substantially reduced. (Bands 11 indicated with broken lines in Hg. 1 and band 12 with full lines).

Thus, a surprisingly good resilience is obtained with the floor of the present invention, which resilience well fulfills the requirements on floorsof gymnastic and athletic establishments etc. Moreover, a very good sound insulation is obtained with the floor, which essentially reduces the transmission of walk noise when using the floor in tenementhouses or the like. In view of its sound-insulating ability the floor of the invention may, of course, also advantageously be used as a support for certain machinery, preferablylight machines, so as to avoid transmission of machine vibrations andother machine noises port and spaced from each other and distributed thereon in a spaced square formation, a diaphragm arranged on said lower layer of resilient elements and spaced uniformly from said rigid support, at least one upper layer of a plurality of resilient, independent, studlike elements arranged on said diaphragm and spaced from each other and distributed thereon in spaced squared formation and displaced relative to said resilient elements of the lower layer so that each upper element lies in the center of the square formed by the lower resilient elements when viewed in plan and a plurality of planar means, said resilient elements being attached thereto in the desired spaced relation to facilitate the positioning of the elements when erecting the floor, said upper floor resting on said upper layer of resilient elements.

2. A resilient floor according to claim 1, wherein said planar means to which said resilient elements are attached are in turn attached to opposite sides of said diaphragm with the resilient elements extending outwardly therefrom.

3. A resilient floor according to claim 1 wherein said resilient studlike elements are composed of cork.

4. A resilient floor according to claim 1, wherein said resilient studlike elements are composed of resilient plastic.

5. A resilient floor according to claim 1 wherein said diaphragm is composed of a composite wood sheet.

6. A resilient floor according to claim 5 wherein said diaphragm is composed of a plurality of coplanar sheets and further comprising means attaching the sheets in coplanar relation.

Patent Citations
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US1610578 *Sep 22, 1924Dec 14, 1926Stevens Partition & Floor DeadWall construction
US2040534 *Oct 20, 1932May 12, 1936Roth Gabriel BSoundproof construction
US2115238 *Dec 12, 1935Apr 26, 1938A C HerbertSoundproof building construction
US2116654 *Feb 21, 1935May 10, 1938Barge William DSoundproof building construction
US2298743 *Mar 3, 1941Oct 13, 1942 Means for removably positioning
US2370769 *Jun 15, 1942Mar 6, 1945United States Gypsum CoWall structure
US2524663 *Mar 5, 1948Oct 3, 1950Bristol Heijmer GustafDouble walled panel construction
*DE847342A Title not available
GB187802288A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3863412 *Apr 23, 1973Feb 4, 1975Domtar LtdEasily dismantled partition structure
US4274626 *Apr 30, 1979Jun 23, 1981Amf IncorporatedExercise floor
US4449342 *Jun 10, 1982May 22, 1984Abendroth Carl WFlooring system
US4589243 *May 9, 1984May 20, 1986Abendroth Carl WFlooring system with strip of resilient material in compression
US4648592 *Jun 25, 1985Mar 10, 1987Atsushi HarinishiGymnastic floor structure having vertical elasticity
US4778027 *Apr 30, 1987Oct 18, 1988Taylor Mildred ERhythmizer
US4831806 *Feb 29, 1988May 23, 1989Robbins, Inc.Free floating floor system
US4879857 *Jun 10, 1988Nov 14, 1989Sport Floor Design, Inc.Resilient leveler and shock absorber for sport floor
US4888927 *Jun 19, 1987Dec 26, 1989Daiken Trade & Industry Co., Ltd.Floating floor
US4995210 *May 16, 1989Feb 26, 1991Robbins, Inc.Free floating floor system and method for forming
US5253464 *Apr 19, 1991Oct 19, 1993Boen Bruk A/SResilient sports floor
US5277010 *Dec 4, 1992Jan 11, 1994Airthrust International, Inc.Flooring support
US5365710 *Feb 12, 1993Nov 22, 1994Connor/Aga Sports Flooring CorporationResilient subfloor pad
US5388380 *Jul 13, 1992Feb 14, 1995Robbins, Inc.Anchored/resilient sleeper for hardwood floor system
US6363675 *Aug 14, 2000Apr 2, 2002Floyd SheltonAnchored resilient athletic flooring structure
US6742312Apr 23, 2002Jun 1, 2004Citizens State BankShock absorber for sports floor
US6918215 *Mar 16, 2001Jul 19, 2005Longlac Wood Industries Inc.Free floating sub-floor panel
US8955279 *Aug 31, 2009Feb 17, 2015Aacer Acquisition, LlcResilient cantilevered athletic flooring system
U.S. Classification52/508, 52/480, 52/346
International ClassificationE04F15/22
Cooperative ClassificationE04F15/22
European ClassificationE04F15/22