Advanced conformance encased coil spring units

摘要

Encased coil units with advance conforming properties have various interconnections and structures between individually encased or wrapped coils. In the various embodiments, encasement structures between coils such as closure or attachment of sheet material or fabric, which encase the coils, are configured to allow and enhance independent movement of coils with respect to adjacent coils and remote coils of the unit. Modifications in the sheet material or fabric which encases the coils include variations in the points of connection or disconnection between adjacent coils, proximate to top ends of the coils to allow more freedom of movement of the top or upper ends of the coils and with respect to adjacent coils, and to reduce load transfer or cratering of the coil springs about the locus of the force vector.

主权项

1. An advanced conformance encased coil spring unit comprising: a plurality of coils arranged in any array of rows and columns, each coil being individually covered in an encasement material and attached to each adjacent coil in each column creating a continuous strand of coils, each row of coils being attached by one or more connection points between the encasement material to each adjacent continuous strand of coils; a subset of the continuous coil strands having a partial slit between two center vertically adjacent coils, the partial slit proximate to an upper portion of the two center vertically adjacent coils, the subset also having fewer connection points between each pair of horizontally adjacent coils than the remaining horizontally adjacent coils; wherein the subset of the continuous coil strands does not include coils proximate to an outer perimeter of the encased coil spring unit.