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US 5,670,232 AGranted
Method for manufacturing integral elastic supports, and supports obtained with this method
AssigneeSelle Royal S.P.A.
InventorRiccardo Bigolin
Life of this patent
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AssigneeSelle Royal S.P.A.
InventorRiccardo Bigolin
Estimating the term…
A method for manufacturing integral elastic supports formed by an upper covering (2), by an intermediate filler (3) and by a semirigid shell (4) entails the use of a mold with a hollow lower part, a flat upper part, and at least one intermediate plate. The method includes the following steps: opening of the mold; deposition on the lower part of a covering sheet with an excess border; securing of the excess border by means of the locking plate; deformation of the covering sheet in vacuum; pouring of a first layer of a gel compound in the fluid state; coupling of a semirigid shell to the upper part of the mold; pouring of a second layer of an expandable resin in the fluid state; closing of the mold; opening of the mold and removal of the finished support. The expandable resin is poured onto the gel compound after a period of time that is sufficient to allow the compound to assume a consistency and shape of its own but is shorter than the full polymerization time so as to allow it to react at least partially with the resin.
An integral elastic support, comprising an upper covering made of flexible laminar material superimposed on a filler that comprises a layer of foamed resin anchored to a shell made of substantially rigid plastic material, wherein said filler is chemically bonded both to said covering and to said shell to form an integral support, at least one insert or layer of a gel compound being interposed between said covering and said foamed resin filler to form with said latter a surface of separation, said gel compound being chemically bonded by an addition-polymerization reaction both to said foamed resin layer and to said covering, said insert being located in regions of maximum pressure for the body of the user wherein said gel insert is self-supporting and said surface of separation is substantially flat.
An integral elastic support comprising:
An integral elastic support comprising:
Dependencies are inferred from the claim text.