Partially foam encased pocketed spring assembly
AssigneeL&P Property Management Company
InventorsShaw F. Robertson, Darrell A. Richmond, Jason V. Jewett
Life of this patent
Estimating the term…
Abstract
A partially foam encased pocketed spring assembly is made in a fully automated assembly machine. A first foam rail is introduced into the assembly machine and glued to upper and lower substrate webs. A first string of pocketed springs is then glued to a side surface of the first foam rail between upper and lower substrate webs and glued to the upper and lower substrate webs. Additional strings are joined together to create a pocketed spring interior. A second foam rail is then introduced into the assembly machine and glued to an outer string and to the upper and lower substrate webs to create a core. Third and fourth foam rails are glued to the core.
Claims20
A partially foam encased pocketed spring assembly comprising:
- a lower fabric substrate sheet;
- an upper fabric substrate sheet;
- first and second foam rails glued to the upper and lower fabric substrate sheets at opposed ends of the partially foam encased pocketed spring assembly;
- a first string of pocketed springs glued to a side surface of the first foam rail and extending parallel to the first and second foam rails;
- a last string of pocketed springs glued to a side surface of the second foam rail;
- interior strings of pocketed springs glued to each other between the first and last strings of pocketed springs;
- and
- third and fourth foam rails glued to the upper and lower fabric substrate sheets on opposed sides of the partially foam encased pocketed spring assembly, wherein each of the foam rails is made of polyurethane foam.
A partially foam encased pocketed spring assembly comprising:
- a lower fabric substrate sheet;
- first and second foam rails glued to the lower fabric substrate sheet;
- a pocketed spring interior comprising separate strings of pocketed springs glued to each other and to the lower fabric substrate sheet, a first string of pocketed springs being glued to a side surface of the first foam rail and a last string of pocketed springs being glued to a side surface of the second foam rail, the strings extending parallel to the first and second foam rails;
- and
- third and fourth foam rails glued to the lower fabric substrate sheet, wherein each of the foam rails is made of polyurethane foam.
A partially foam encased pocketed spring assembly comprising:
- a lower fabric substrate sheet;
- an upper fabric substrate sheet;
- first and second foam rails attached to the lower fabric substrate sheet and upper fabric substrate sheet;
- a pocketed spring interior comprising strings of pocketed springs glued to each other, a first string of pocketed springs being attached to the lower fabric substrate sheet and the upper fabric substrate sheet and a last string of pocketed springs being attached to the lower fabric substrate sheet and the upper fabric substrate sheet, the strings extending parallel to the first and second foam rails;
- and
- third and fourth foam rails attached to the lower fabric substrate sheet and the upper fabric substrate sheet, each of the third and fourth foam rails being attached to the first and second foam rails, wherein each of the foam rails is made of polyurethane foam and the first string of the pocketed spring interior is glued to a side surface of the first foam rail and the last string of the pocketed spring interior is glued to a side surface of the second foam rail.
A partially foam encased pocketed spring assembly comprising:
- a lower fabric substrate sheet;
- first and second foam rails attached to the lower fabric substrate sheet;
- a pocketed spring interior comprising strings of pocketed springs glued to each other, a first string of pocketed springs being attached to the lower fabric substrate sheet and a last string of pocketed springs being attached to the lower fabric substrate sheet, the strings extending parallel to the first and second foam rails;
- and
- third and fourth foam rails to the lower fabric substrate sheet, each of the third and fourth foam rails being attached glued to the first and second foam rails, wherein each of the foam rails is made of polyurethane foam and the first string of the pocketed spring interior is glued to a side surface of the first foam rail and the last string of the pocketed spring interior is glued to a side surface of the second foam rail.
Dependencies are inferred from the claim text.