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Publication numberUS2192601 A
Publication typeGrant
Publication dateMar 5, 1940
Filing dateJun 8, 1939
Priority dateJun 8, 1939
Publication numberUS 2192601 A, US 2192601A, US-A-2192601, US2192601 A, US2192601A
InventorsNorman D Mattison
Original AssigneeNorman D Mattison
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Rubber mattress
US 2192601 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

March 5, 1940. l N. D. MA'r'rlsoN RUBBER MATTRESS Filed June 8; 19.39

2 Sheets-Sheet 1' l INVENToR /Vokf/Agv A /7/ 1 Tr/.Sa/v.


Filed June 8. 1959 Iall. IuIlII ATTORNEY Patented Mar.'5, 1940 UNITED STATES PATENT oFFrcE RUBBER MATTRESS Norman D. Mattison, Montclair, N. J. Application June 8, 1939, Serial No. 278,025

3 Claims. (Cl. 5355) This invention relates to rubber mattresses and more particularly to mattresses made of spongelike rubber. Rubber of this sort made from liquid latex is at the present time offered as a 5 commercial product for use as a cushioning material for mattresses, cushions, pads and the like.

An object of the present invention is to utilize a rubber mattress of the type described which will fulfill the requirements necessary to comfortable and restful sleep and winch will require but little change in standard methods of manufacturing a mattress of this type.

Rubber mattresses as commercially offered to the trade are of cellular structure, the cells all being of substantially equal capacity and are distributed substantially uniformly throughout the mattress. These cells are open at the bottom of the mattress but do not extend completely through it, there being a layer of sponge-like rubber between the upper portions of the cells and the top surface of the mattress. Such a mattress is therefore a one surface mattress and is not intended to be turned bottom side up. As described in my application, Serial No. 269,834 filed April 25, 1939, for Spring mattress, the factor of softness or yield of a mattress is only one of the factors which are conducive to comfort in sleeping. The other factor, as I have found bynumerous experiments, is the ease with which the individual may turn over or change position. Considered solely from the viewpoint of facilitating changes in position, a hard fiat surface seems to be the best. Such a surface, however, is not comfortable and in the manufacture of mattresses heretofore as far as I am aware, efforts to increase the softness have been made while neglecting the other factor, namely the ease in changing position or turning over. In the rubber mattresses such as are offered to the trade at the present time, insofar as I am aware, the supporting surface of the mattress has approximately a uniform degree of resilience, "since the cells are of the same capacity throughout and are substantially equally distributed.

With such a. mattress the resistance to depression is substantially the same for a given weight or-load per square footof area throughout approximately the entire surface of the mattress. 60 However, since a relatively large proportion of the weight of the body is located in the midsection, that is, in the region of the hips, the central part of a rubber mattress of the present commercial type is depressed to a greater degree 55 in mid-section than in adjacent sections. The

result is a tendency of the mattress to sag in the middle which sagging induces a condition which many users find uncomfortable due to the fact that it throws the spinal column-out of line. It also increases the effort to turn over in bed. i

In .my application above referred to, I have disclosed a construction of spring mattress in which greater resistance is oil'ered to the body in the mid-section of the mattress.

The present invention seeks to provide for a 10 similark condition in rubber mattresses.

In the accompanying drawings several forms, whereby the desired result may be accomplished, are shown. In said drawings:

Figure 1 is a top plan view with a portionof the upper surface broken away to more clearly show the cellular structure;

Figure 2 is a section on the line 2-2 of Figure Figure 3 is a somewhat enlarged view of one 20 of the plugs used in connection with this form of construction;

Figure 4 is a view similar to Figure 1 but showing a different form which the invention may take; 5

Figure 5 is a section on the line 5-5 of Figure Figure 6 is a view similar to Figure 1 showing still another form which the invention may take; and 3 Figure 7 is a section on the line 1-1 of Figure 6.

Referring to the drawings, the mattress 2, is

formed of sponge-like rubber and preferably of rubber made from liquid latex, and made spongy 35' in any desired manner, preferably by mixing air with the latex before molding. The rubber forming the mattress is of substantially equal unit density. In order that such a mattress may have the resilience usually desired, a number of cells 40 4 are formed during the molding process. These cells are open at the bottom and extend to a distance near the upper surface of the mattress but leaving a layer indicated at B between the upper portions of the cells and the upper face 45 of the'mattress.

In the form of mattress illustrated in Figure 1, I increase the resistance of the mid-portion of the mattress by inserting a number of plugs 8 in the cells composing this mid-portion. One of these plugs is shown in Figure 3. In the Figure 1 construction, all of the cells may be of the same dimensions and may be equally distributed since this construction conforms to the standard methods of manufacture. The plugs 8, however, Il

may be inserted in all of the cells of the ber of cells. By the use of these plugs, therefore, I provide a means whereby the resistance, especially that which the mid-section of the mattress oilers, may be varied in a standard mattress. The mid-section is not necessarily inthe middle of the mattress, but is nearer to the head than to the foot and may extend a distance between 16 and 22 inches, although I have found 18 inches to be a practical dimension and I have shown this dimension on the drawings. With this dimension for the mid-section, the head section would be 23 inches and the foot section 31 inches, in a standard mattress of 'l2 inches in length. This mid-section extends transversely the entire width of the mattress but is of limited longitudinal extent.

While the construction shown in Figure 1 enables the resistance to be varied, at will to suit individuals of different weights, the invention may nevertheless rind utilityin a mattress of denite resistance in its mid-section and in Figures 4 and 5 I have shown a construction in which the cells are all of th'e same size or capacity but are more widely separated in the mid-section than in the adjacent sections.

Still another way in which the same result can be produced as in the Figures 4 and 5 construction, is illustrated in Figures 6 and 'l wherein the cells in the mid-section are smaller than in the adjacent sections. Preferably all of the cells are of the same depth but are of smaller diameter in the mid-section.

InV all of the forms it will be observed that the quantity of rubber in the mid-section is greater than in the adjacent sections. In other words, portions of the mattress of equal external dimensions have different quantities of rubber therein.

In order to augment the resistance especially in a direction transverse of the mattress, I may embed a fabric Ill between the upper surface of midsection or they may be inserted in any less numthe mattress and the upper portions of the cells., This fabric may extend across the mattress only in the mid-section, as shown, or it may extend throughout the mattress or may be omitted entirely. l

A rubber mattress constructed as above described, provides a substantially level surface when deformed by the weight of a person lying upon it in sleeping position and in the form of the invention as illustrated in Figures 1 and 2, the resistance especially in the mid-section may be Varied as desired to adapt the resistance of such mid-section to persons of different weights.

What I claim is:

1. A mattress of cellular structure made of sponge-like rubber of substantially equal unit density, the cells of which are of substantially the same dimensions, a portion of the mattress extending transversely the width of the same but occupying a limited longitudinal area near the central portion thereof having removable plugs carried by the cells thereof, said plugs being com- Aposed of rubber susbtantially like that of the mattress.

2. A mattress of cellular structure made of sponge-like rubber of substantially equal unit density, the cells of which are all substantially of the same dimensions, a portion of the mattress extending transversely the width of the same but occupying a limited longitudinal area near the central portion thereof having cells more widely spaced than the cells in other portions of the mattress of equal external dimensions.

3. A mattress of cellular structure made of sponge-like rubber of substantially equal unit density, the cells of which are of substantially the same dimensions, removable plugs adapted to be inserted in the cells of said mattress whereby different portions of the same may be given different resistances to pressure.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2462579 *Feb 1, 1946Feb 22, 1949Lester W WarnerMattress
US2504352 *Jan 5, 1946Apr 18, 1950Robell Paul RMattress
US2518450 *Nov 8, 1944Aug 15, 1950Cowen Sidney T VCushioned package of fragile articles
US2570736 *Nov 7, 1946Oct 9, 1951Henry West SamuelMattress
US2604642 *Jun 19, 1950Jul 29, 1952Marco Company IncFoam rubber mattresses, cushions, seats, and the like
US2830306 *Jun 18, 1954Apr 15, 1958Dayton Rubber CompanyFoldable mattress
US2835906 *May 7, 1954May 27, 1958Robbins RalphFoam rubber mattress
US2994890 *Nov 8, 1956Aug 8, 1961Dayco CorpSpring reinforced mattresses
US3022523 *Nov 17, 1959Feb 27, 1962Roland SchmutzUnder-mattress
US3028610 *Jun 9, 1959Apr 10, 1962Goodrich Co B FFoam rubber cushioning
US3166768 *Jun 11, 1962Jan 26, 1965Cunningham Cecil CInnerspring mattress construction
US4042988 *Nov 2, 1976Aug 23, 1977Odell HollidayAir mattress
US4728148 *Dec 8, 1986Mar 1, 1988Tachi-S Co., Ltd.Supporting structure of the lumbar portion of the foam cushion member in an automotive seat
US4796316 *Nov 12, 1987Jan 10, 1989Dunlop FranceMattress with aeration cavities
US5327598 *Jul 2, 1993Jul 12, 1994Liou Yaw TMassage mattress
US5604021 *Dec 23, 1994Feb 18, 1997Ohio Mattress Company Licensing And Components GroupMulti-layer support pad having regions of differing firmness
US5836027 *Apr 25, 1997Nov 17, 1998Leventhal; Robert D.Integrated matrix bedding system
US6023803 *Nov 7, 1997Feb 15, 2000Ohio Mattress Company Licensing And Components GroupMattress with high ILD firm topper
US6854144 *Dec 11, 2003Feb 15, 2005Samuel S. Mehring, Jr.Therapeutic mattress system
US7428764 *Aug 29, 2005Sep 30, 2008Clark John DDiscrete orthoganol support system
US7469437Jun 24, 2005Dec 30, 2008Tempur-Pedic Management, Inc.Reticulated material body support and method
US8418297Dec 30, 2008Apr 16, 2013Tempur-Pedic Management, LlcReticulated material body support and method
US8491056 *Apr 1, 2011Jul 23, 2013Kevin Charles Furniture, LlcCushion
US8621694 *Sep 10, 2010Jan 7, 2014Fxi, Inc.Sleep support surface that includes a layer with large diameter cleaving
US20110061168 *Sep 10, 2010Mar 17, 2011David FarleySleep support surface that includes a layer with large diameter cleaving
US20120248845 *Apr 1, 2011Oct 4, 2012Kevin Charles Furniture, LlcCushion
EP0267855A2 *Nov 13, 1987May 18, 1988Dunlop France SaMattress with ventilating cavities
U.S. Classification5/729, 5/740
International ClassificationA47C27/15
Cooperative ClassificationA47C27/146, A47C27/144
European ClassificationA47C27/14C2, A47C27/14C4