Coated springs and mattress made thereof
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United States of America Patent
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Jun 23, 2015
Grant Date -
Apr 4, 2013
app pub date -
Sep 11, 2012
filing date -
Oct 4, 2011
priority date (Note) -
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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.
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