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Número de publicaciónUS2985895 A
Tipo de publicaciónConcesión
Fecha de publicación30 May 1961
Fecha de presentación24 Abr 1958
Fecha de prioridad24 Abr 1958
Número de publicaciónUS 2985895 A, US 2985895A, US-A-2985895, US2985895 A, US2985895A
InventoresBloom Abraham
Cesionario originalBloom Abraham
Exportar citaBiBTeX, EndNote, RefMan
Enlaces externos: USPTO, Cesión de USPTO, Espacenet
Adjustable box springs
US 2985895 A
Resumen  disponible en
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Reclamaciones  disponible en
Descripción  (El texto procesado por OCR puede contener errores)

y 1961 A. BLOOM ADJUSTABLE BOX SPRINGS Filed April 24, 1958 INVENTOR. ABRAHAM BLOOM group Unite States Patent ADJUSTABLE BOX SPRINGS Abraham Bloom, 721 Arlington Ave., Plalnfield, NJ.

Filed Apr. 24, 1958, Ser. No. 730,614

1 Claim. (CI. 54423 This invention relates to box springs for beds comprising an enclosed spring unit assembly. The purpose of this invention is to provide means for adjusting the firmness of box springs to suit the preference of the user or users. The object of this invention is to provide as simple, inexpensive and yet practicable means to achieve above mentioned purpose as possible.

In the accompanying drawings Fig. 1 is a bottom plan View of a box spring with parts being broken away,

Fig. 2 is a cross section along line 24-2 in Fig. 1,

Fig. 3 is a cross section along line 3-6 in Fig. 1,

Fig. 4 is an enlarged detail of the combination of mem bers used to adjust the firmness of the box spring.

In these figures the box spring 1 is shown to consist of a frame 22 on which sets a coil spring unit 23 which consists of a plurality of coil springs 4 generally helical in form said coil springs being formed into a unit by tie wires on top 5 and on bottom 6. The coil spring unit 23 is covered by padding 7 and a fabric 18 called the ticking covers the exterior.

Externally threaded posts 8 with the welded on or soldered nuts 24 when rotated in internally threaded members 9 which are supported by slats 10 serves to raise or lower longitudinal bar members 11 and 12 which are bolted to and kept in line by center bar members 13, the bolt holes in 11 and 12 where these members bolt to member 13 being of elongated shape. Fastened to bottom of post 8' is knob 14 which has a set screw that engages on flat spot on post 8.

A plurality of tie cords 15 tie the top wires 5 to cross slats 10 which form part of frame 22 the purpose of these cords being to prevent distortion of the top surface of the box spring.

The action of aboved described combination is as follows. When knobs 14 are rotated, posts 8 will raise or lower longitudinal bars 11, 12 and 13 so that the tension in coil springs 4 and coil spring unit 23 increases or decreases thus the firmness of the box spring 1 may be varied as desired.

The drawings and above description refer to a double size box spring with each side adjustable. It may be in some cases preferred to have only one side adjustable, or in the case of a single size or twin size box spring, the adjusting mechanism consisting of posts 8, members 9 and 10, longitudinal bars 11, 12 and 13' and other associated parts would be located at the center and parallel to the sides of the box spring. Also whereas the drawings indicate that bars 11, 12 and 15 are of wood, it is obvious that these members may also be made of metal. The invention is subject to modifications coming within the scope of the claim.

I claim:

In a box-spring structure for beds and the like, the combination comprising a normally stationary and rigid underframe structure adapted to support a flexible bed spring-unit, said spring-unit consisting ofa flexible upper grid section defining the upper plane and surface area of the spring-unit and a flexible under grid section of substantially equal area and a plurality of coiled spring elements arranged on vertical axes between said flexible upper and under grid sections, means for securing said spring-unit to said rigid underframe including a plurality of tie cords connected at their upper ends to the said flexible upper grid section of the spring-unit and at their lower ends to said rigid underframe structure, and a plurality of independently operable screw means threadably engaged with said rigid underfranie Structure and operative against the under surface of the flexible under grid section of the spring unit adapted when selectively actuated to flex the said under grid section at localized areas whereby to vary the firmness of the spring unit at localized zones, said tie-cords connecting the upper flexible grid section of the spring unit to the rigid underframe structure functioning to restrain the upper grid section from bulging when said screw means are actuated to flex the said flexible under grid section of the spring unit.

References Cited in the file of this patent UNITED STATES PATENTS 632,520 Fixen Sept. 5, 1899 2,049,550 Van Dresser Aug. 4, 1936 2,302,514 Atkinson Nov. 17, 1942 2,558,288 Backus June 26, 1951 2,595,072 Gottschalk Apr. 29, 1952 2,630,585 Reese Mar. 10, 1953 2,675,566 Lieberman Apr. 20, 1954 2,842,784 Grund July 15, 1958

Citas de patentes
Patente citada Fecha de presentación Fecha de publicación Solicitante Título
US632520 *3 Ago 18985 Sep 1899Brigt B FixenSpring-bottom for beds, sofas, or the like.
US2049550 *10 Feb 19324 Ago 1936Van Dresser Specialty CorpCushion construction
US2302514 *11 Oct 193817 Nov 1942Jerome T AtkinsonBedspring and the like
US2558288 *6 Mar 194726 Jun 1951Backus CarlAdjustable spring tensioning of bed springs
US2595072 *22 Mar 194829 Abr 1952Victor H GottschalkAdjustable resiliency bedspring
US2630585 *3 Jul 195010 Mar 1953Clyde B ReeseAdjustable bedspring
US2675566 *3 Mar 195020 Abr 1954Leonard Chicago CorpBedspring construction
US2842784 *13 Dic 195515 Jul 1958Grund JohnAdjustable mattress springs
Citada por
Patente citante Fecha de presentación Fecha de publicación Solicitante Título
US3059249 *23 Abr 195923 Oct 1962Englander Co IncAdjustable box spring
US3083380 *26 Dic 19612 Abr 1963Adler Harry MMattresses
US3126554 *27 Oct 196131 Mar 1964 Prescription bedding having individually adjustable spring units
US3252170 *8 Ago 196324 May 1966James R FryeVariable firmness mattress
US3339214 *28 Abr 19665 Sep 1967Wortso CorpIndividually adjustable sleeping equipment
US4112528 *4 Abr 197712 Sep 1978Leggett & Platt, IncorporatedBox spring assembly and small diameter single cone coil spring for use in that assembly
US4190914 *29 Mar 19784 Mar 1980Souleymane DialloSleep unit
US4667357 *8 Oct 198626 May 1987Fortune Richard LSleep unit having adjustable firmness
US4886250 *7 Ago 198712 Dic 1989Schweiger Industries, Inc.Spring structure for cushion seating
US729631022 Ago 200520 Nov 2007Milliken & CompanyAdjustable mattress foundation
US9138065 *28 Dic 201222 Sep 2015Tempur-Pedic Management, LlcBed with mattress assembly having one or more internal plates
US20060253994 *24 Ago 200416 Nov 2006Spinks Simone PBeds and mattresses
US20070039099 *22 Ago 200522 Feb 2007Kozlowski Derek SAdjustable mattress foundation
EP2474251A1 *7 Ene 201111 Jul 2012Han-Chung HsuMattress structure
WO2005020760A1 *24 Ago 200410 Mar 2005A Harrison (Bedding) LimitedBeds and mattresses
Clasificación de EE.UU.5/248, 5/697
Clasificación internacionalA47C31/12, A47C27/06
Clasificación cooperativaA47C27/061
Clasificación europeaA47C27/06A