Abstract 1. An assembly useful as a seating member or back member when installed on a frame, comprising: a series of arcuate, continuous, sinuous spring metal wires, each having two ends, each said wire closely approaching each of its immediately adjacent said wires at frequent intervals, and a thin sleevelike plastic coating surrounding said wires, following their sinuosity and joining them together where they closely approach each other, said approaches being close enough for effective bridging between them by said coating, said plastic coating having a Shore A durometer in the range of 45 to 90, the thickness of said coating being from about one-fifth of the wire thickness to about equal to the wire thickness, whereby said wires and plastic coating comprise a unitary assembly defining a cylindrical arc which is intended to be flattened somewhat when said assembly is installed on a said frame, thereby placing the springs in tension along a flatter cylindrical arc, said coating constituting the sole means holding said assembly together, said spring metal wires having a silhouette area of between about 17% and about 75% of the area of said assembly, the empty space between the coated wires occupying from about 2% to about 75% of the area of the assembly.
An assembly useful as a seating member or back member when installed on a frame, comprising: a series of arcuate, continuous, sinuous spring metal wires, each having two ends, each said wire closely approaching each of its immediately adjacent said wires at frequent intervals, and a thin sleevelike plastic coating surrounding said wires, following their sinuosity and joining them together where they closely approach each other, said approaches being close enough for effective bridging between them by said coating, said plastic coating having a Shore A durometer in the range of 45 to 90, the thickness of said coating being from about one-fifth of the wire thickness to about equal to the wire thickness, whereby said wires and plastic coating comprise a unitary assembly defining a cylindrical arc which is intended to be flattened somewhat when said assembly is installed on a said frame, thereby placing the springs in tension along a flatter cylindrical arc, said coating constituting the sole means holding said assembly together, said spring metal wires having a silhouette area of between about 17% and about 75% of the area of said assembly, the empty space between the coated wires occupying from about 2% to about 75% of the area of the assembly.
Claim 2
Dependent Claim
206 words
An assembly useful as a seating member or back member when installed on a frame, comprising: a series of arcuate, continuous, sinuous spring metal wires, each having two ends, each said wire closely approaching each of its immediately adjacent said wires at frequent intervals, and a thin sleevelike plastic coating surrounding said wires, following their sinuosity and joining them together where they closely approach each other, said approaches being close enough for effective bridging between them by said coating, said plastic coating having a Shore A durometer in the range of 45 to 90, the thickness of said coating being from about one-fifth of the wire thickness to about equal to the wire thickness, whereby said wires and plastic coating comprise a unitary assembly defining a cylindrical arc which is intended to be flattened somewhat when said assembly is installed on a said frame, thereby placing the springs in tension along a flatter cylindrical arc, said coating constituting the sole means holding said assembly together, said spring metal wires having a silhouette area of between about 17% and about 75% of the area of said assembly, the empty space between the coated wires occupying from about 2% to about 75% of the area of the assembly.