Coated springs and mattress made thereof
OwnerLeon Blanga Coheninventor
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Abstract
The invention describes a coated spring for mattresses that comprises a helical compression spring and a wrapping in the form of a bag containing the spring, wherein the bag containing the spring is injected with a polymeric reaction mixture, which after reacting or curing produces a polymeric foam, preferably of flexible polyurethane up to a desired volume in order to cause the spring to change its flexion or compression properties, as well as the method for its manufacturing and its use in the manufacturing of mattresses of different kinds.
Claims20
A method for manufacturing coated springs for mattresses comprising:
- coating a helical spring in a material hermetic to liquids such that the helical spring is contained in a bag;
- forming a row of a plurality of the bags, each bag containing a respective helical spring, through connection lines transversal to the longitudinal joint direction, and parallel to the height of the helical springs;
- injecting a predetermined amount of polymeric reaction mixture in the bottom of each bag containing the respective helical spring;
- and
- allowing the polymeric reaction mixture to fully react to generate a flexible foam inside each of the bags, such that a portion of each helical spring is encrusted in the flexible foam.
A method for manufacturing coated springs for mattresses comprising:
- coating a helical spring in a material hermetic to liquids such that the helical spring is contained in a bag;
- injecting a predetermined amount of polymeric reaction mixture into the bag containing the helical spring;
- and
- allowing the polymeric reaction mixture to fully react to generate a foam inside the bag.
A method for manufacturing coated springs for mattresses comprising:
- forming a row of a plurality of bags, each bag containing a respective helical spring, through connection lines transversal to the longitudinal joint direction, and parallel to the height of the helical springs;
- injecting a predetermined amount of polymeric reaction mixture into each of the plurality of bags containing the respective helical spring;
- and
- allowing the polymeric reaction mixture to fully react to generate a foam inside each of the plurality of bags.
Dependencies are inferred from the claim text.