RESSORT POUR MATELAS OU COUSSINS

SPRING CORE FOR MATTRESS OR SEAT CUSHION

Abrégé anglais

This invention relates to a spring core of leaf springs for mattresses and seat
cushions. According to the invention, the spring core comprises at least two plates opposite
each other, having a multiplicity of spring elements broken out of holes. Preferably, the
spring elements of the opposite plates are mirror-images.

Revendications

CLAIMS
We claim:
1. A spring core for a mattress or seat-cushion comprising
at least two plates, each plate having spring elements bent out of a
multiplicity of breaches.
2. The spring core according to claim 1 wherein spring elements of
one plate are bent as mirror-images of spring elements of an opposite plate.
3. The spring core according to claim 2 wherein ends of spring
elements of one plate are shaped sa pans with edges formed so as to center
an opposite plate.
4. The spring core according to claim 3 wherein the plates are
made of a fiber-reinforced plastic.
5. The spring core according to claim 4 wherein the spring core is
reinforced in places subject to especially heavy wear by insertion of additionalspring elements.
6. The spring core according to claim 2 wherein the plates are
made of a fiber-reinforced plastic.
7. The spring core according to claim 6 wherein the spring core is
reinforced in places subject to especially heavy wear by insertion of additionalspring elements.
8. The spring core according to claim 2 wherein the spring core is
reinforced in places subject to especially heavy wear by insertion of additionalspring elements.
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Description

2143088
.
SPRING CORE FOR MATTRESS OR SEAT CUSHION
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a spring core for mattresses and seat cushions
with leaf springs.
2. Di~ inn of the Related Art
Spring cores made with spiral springs for mattresses and seat cushions
are known. Such spring cores, which are known in a variety of forms, are not
corrosion resistant. These spring cores can only be made of spring steel and
not of plastics, and therefore are expensive.
The use in mattresses and seat cushions of inserts made of synthetic
foam, natural fibers, and other elastic filling materials in place of springs isalso known. These known inserts have the di~pd~ Ln~ of very poor air
circulation and consequent trapping of moisture, as well as early fatigue and
~uu~ u~ -lL deformation of the insert material.
SUMMARY OF THE INVENTION
The objects of the present invention are to provide a spring core that
can be made from plastics and also allow a sufficient circulation of air.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig 1 is a schematic ~ t,.-L~Liul- of an Pmho~limPnt. of the spring
core.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Fig. 1 shows a spring core in which two mirror-image plates la, lb are
opposite each other, each having spring elements 3 broken and bent out of
openings 2. The spring elements 3 are, by way of example, arranged
byll~ LI;~lly and in line. It can further be seen that, as a result of the
mirror-image Cu~ ru. ~iull and ~ l.. .IL of the spring elements 3, a
multitude of leaf spring systems with movable supports 4 is formed, which do
not transfer possible latera~ of the movable supports 4 to the
surroundings.
The objects of the invention are achieved in that the spring core

~ 2143088
comprises at lesst two plates arranged opposite each other. Each plste is
broken out to form a multitude of xpring elements. The spring e~ements of
opposing plates are mirror-images of each other. This CUllbblU~.~iUII snd
al .~ ;elllellL of the spring cores results in a multitude of leaf spring systems
6 with movable supports which do not trsnsfer a lengthwise 1 icrl ~Tn f~n t of the
supporting points to the cushion material.
This 1U~ lU~.~iUu results in the special advsntages in that a large
supporting surface is provided for the cushion material which may form a
covering, snd that air csn circulste very well through the breaches. In sn
especially advsntageous .,ho-lil . -,~ of the invention, the ends of the spring
elements of a plate are shaped sa pans with edgeE formed 80 as to center the
opposing plate. In a further especially adv~ h~eùu~ ~mho-liTni~nt of ehe
invention, the plates are preferably made from a fiber-reinforced plastic,
resulting in an up-to-date corrosion-resistant and lightweight spring corê.
o.~z~ -2-

Dessin représentatif