Spring mattress

Details Spring mattress Spring mattress

1999-11-30

2002-04-16

Butler, Douglas C. (Department: 3613)

Spring devices

Spring panel

Spring panel comprises vertically oriented compressible coil...

C005S252000, C029S091000, C029S091100

Reexamination Certificate

active

06371458

ABSTRACT:

This application is the national phase under 35 U.S.C. §371 of PCT International Application No. PCT/SE98/00844 which has an International filing date of May 8, 1998 which designated the United States of America.
TECHNICAL FIELD
The present invention relates to a spring mattress comprising a plurality of interconnected coil-spring elements. The mattress having at least two layers extending in parallel with the plane of the mattress and each exhibiting a different properties of resilience.
BACKGROUND
Quality spring mattresses today normally comprise two superposed layers of coil springs disposed between the bed frame and the surface of the mattress. In some cases the springs in one of the spring layers are enclosed in an external cover, usually made from a textile material. As a result of the provision of these outer covers the springs assume a partly biased position in the normal, unloaded condition of the mattress.
However, these mattresses are comparatively complicated to manufacture, since they comprise a large number of different components. They are also relatively cumbersome to assemble, considering that each spring in the biased layer must be sewn into a separate cover, in addition to which the springs thereafter must be tied to one another in order to form a layer. The layer then must be anchored to a lower, non-biased layer and to frame parts and the like.
OBJECT OF THE INVENTION
Consequently it is an object of the subject invention to provide a spring mattress and a method of manufacturing the same, the mattress being of a kind that comprises layers exhibiting different qualities of resilience but that contains fewer components, while at the same time the mattress is more convenient and less expensive to manufacture than hitherto known mattresses of this kind.
According to a further aspect of the invention a mattress of the kind referred to is provided, which improves the user's comfort because the layer having the lesser bias is turned towards the surface of the mattress and/or because the springs occupying this layer are individually resilient.


REFERENCES:
patent: 882600 (1908-03-01), Weborg
patent: 1111076 (1914-09-01), Lewis
patent: 1150754 (1915-08-01), Franz
patent: 1155392 (1915-10-01), Young
patent: 1248956 (1917-12-01), Vincent
patent: 1261655 (1918-04-01), Vallone
patent: 1418469 (1922-06-01), Reidenbach
patent: 2054868 (1936-09-01), Schwartzman
patent: 2129251 (1938-09-01), Venzke
patent: 2184517 (1939-12-01), Duvall et al.
patent: 2348897 (1944-05-01), Gladstone
patent: 2657740 (1953-11-01), Daniels et al.
patent: 2724842 (1955-11-01), Rogovy
patent: 3009171 (1961-11-01), Rymland
patent: 3198508 (1965-08-01), Melton et al.
patent: 3206759 (1965-09-01), Kline
patent: 3608107 (1971-09-01), Kentor et al.
patent: 3674250 (1972-07-01), Joseph
patent: 3866896 (1975-02-01), Wehner
patent: 4895352 (1990-01-01), Stumpf
patent: 5063625 (1991-11-01), Perry
patent: 5149064 (1992-09-01), Schulz, Jr.
patent: 5363522 (1994-11-01), McGraw
patent: 5927696 (1999-07-01), Hagemeister
patent: 6049959 (2000-04-01), Grondahl
patent: 6175997 (2001-01-01), Mossbeck
patent: 6186483 (2001-02-01), Bullard
patent: 6260223 (2001-07-01), Mossbeck et al.
patent: 477710 (1929-06-01), None
patent: 430564 (1935-06-01), None
patent: 5636 (1897-02-01), None
patent: 8325 (1899-10-01), None
patent: 59281 (1938-04-01), None
patent: 9934711 (1999-02-01), None
patent: 9935081 (1999-07-01), None

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