Patent EP0082259A1 successfully refreshed from Google Patents.
EP0082259A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Longitudinally laced continuous coil spring assembly
Assignee: Leggett and Platt Inc
•
Filing: 1982-10-09
•
Granted: —
•
Expires: 2002-10-09
Abstract
Abstract A spring assembly for mattresses, innersprings, and the like. The assembly comprises longitudinal rows of coils, each row comprising a continuous length of wire formed into a plurality of coils interconnected by Z-shaped wire segments alternately disposed at the top and bottom of the coils. Adjacent rows of coils are connected by longitudinally extending helical lacing wires wound through overlapping Z-shaped wire segments. By lacing the rows of coils longitudinally, the spacing between adjacent coils may be varied in selected longitudinal sections of the unit so as to vary the coil count and thus the firmness of selected areas of the assembly, as for example the center section. Furthermore, by so lacing the rows of coils, a single set-up of forming and assembly machine may be used to manufacture various widths of mattresses, as for example, twin, double or queen and king size units.
Inventors
- 👤 Larry Higgins
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 23:36
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/04; A47C27/06; A47C27/07; A47C27/068
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
190 words
A spring assembly having a long longitudinal dimension and a shorter transverse dimension, said assembly comprising, a plurality of parallel rows of coils, each of said rows extending longitudinally of the spring unit, each of said rows being formed from a single continuous piece of wire and each of said rows containing a plurality of coils interconnected by generally Z-shaped interconnecting segments, alternate ones of said Z-shaped interconnecting segments being disposed in the planes of the upper and lower surfaces of said spring assembly, portions of said Z-shaped interconnecting segments extending beyond the periphery of said coils, the axes of said coils being disposed perpendicular to the upper and lower surfaces of said spring assembly, and sections of each of said Z-shaped interconnecting segments of each row being overlapped relative to Z-shaped interconnecting segments of an adjacent row, said overlapped sections being located on opposite sides of said coils, and helical lacing means extending longitudinally parallel to said rows for the length of said rows, said helical lacing means being wound through sections of said Z-shaped interconnecting segments so as to secure said rows of coils in an assembled relation.
Claim 2
Dependent Claim
190 words
A spring assembly having a long longitudinal dimension and a shorter transverse dimension, said assembly comprising, a plurality of parallel rows of coils, each of said rows extending longitudinally of the spring unit, each of said rows being formed from a single continuous piece of wire and each of said rows containing a plurality of coils interconnected by generally Z-shaped interconnecting segments, alternate ones of said Z-shaped interconnecting segments being disposed in the planes of the upper and lower surfaces of said spring assembly, portions of said Z-shaped interconnecting segments extending beyond the periphery of said coils, the axes of said coils being disposed perpendicular to the upper and lower surfaces of said spring assembly, and sections of each of said Z-shaped interconnecting segments of each row being overlapped relative to Z-shaped interconnecting segments of an adjacent row, said overlapped sections being located on opposite sides of said coils, and helical lacing means extending longitudinally parallel to said rows for the length of said rows, said helical lacing means being wound through sections of said Z-shaped interconnecting segments so as to secure said rows of coils in an assembled relation.
Claim 3
Dependent Claim
60 words
The spring assembly of Claim 1 in which said coils in the center section of each of said longitudinally extending rows of coils are more closely spaced than the coils at the outer ends of each of said rows whereby greater firmness is imparted to the center section of said spring assembly than is imparted to the outer end sections.
Claim 4
Dependent Claim
37 words
The spring assembly of Claim 2 in which the axes of the coils in the center section of each of said rows are angled differently than the coils at the outer ends of each of said rows.
Claim 5
Dependent Claim
28 words
The spring assembly of Claim 2 in which the coils in the center section of each of said rows of coils are angled inwardly toward the adjacent coils.
Claim 6
Dependent Claim
51 words
The spring assembly of Claim 2 in which the coils in the center section of each of said rows of coils are angled inwardly toward the adjacent coils and the coils at the outer end sections of each of said rows of coils are angled outwardly away from the adjacent coil.
Claim 7
Dependent Claim
184 words
A spring assembly having a long longitudinal dimension and a shorter transverse dimension, said assembly comprising, a plurality of parallel rows of coils, each of said rows extending longitudinally of the spring unit, each of said rows being formed from a single continuous piece of wire and each of said rows containing a plurality of coils interconnected by generally interconnecting segments, alternate ones of said interconnecting segments being disposed in the planes of the upper and lower surfaces of said spring assembly, portions of said interconnecting segments extending beyond the periphery of said coils, the axes of said coils being disposed perpendicular to the upper and lower surfaces of said spring assembly, and sections of each of said interconnecting segments of each row being overlapped relative to interconnecting segments of an adjacent row, said overlapped sections being located on opposite sides of said coils, and helical lacing means extending longitudinally parallel to said rows for the length of said rows, said helical lacing means being wound through sections of said interconnecting segments so as to secure said rows of coils in an assembled relation.
Claim 8
Dependent Claim
184 words
A spring assembly having a long longitudinal dimension and a shorter transverse dimension, said assembly comprising, a plurality of parallel rows of coils, each of said rows extending longitudinally of the spring unit, each of said rows being formed from a single continuous piece of wire and each of said rows containing a plurality of coils interconnected by generally interconnecting segments, alternate ones of said interconnecting segments being disposed in the planes of the upper and lower surfaces of said spring assembly, portions of said interconnecting segments extending beyond the periphery of said coils, the axes of said coils being disposed perpendicular to the upper and lower surfaces of said spring assembly, and sections of each of said interconnecting segments of each row being overlapped relative to interconnecting segments of an adjacent row, said overlapped sections being located on opposite sides of said coils, and helical lacing means extending longitudinally parallel to said rows for the length of said rows, said helical lacing means being wound through sections of said interconnecting segments so as to secure said rows of coils in an assembled relation.
Claim 9
Dependent Claim
60 words
The spring assembly of Claim 6 in which said coils in the center section of each of said longitudinally extending rows of coils are more closely spaced than the coils at the outer ends of each of said rows whereby greater firmness is imparted to the center section of said spring assembly than is imparted to the outer end sections.
Claim 10
Dependent Claim
154 words
A spring assembly having a long longitudinal dimension and a shorter transverse dimension, said spring assembly comprising, a plurality of parallel rows of coils, each of said rows extending longitudianlly of the spring unit, each of said rows being formed from a single continuous piece of wire and each of said rows containing a plurality of coils interconnected by generally interconnecting segments, alternate ones of said interconnecting segments being disposed in the planes of the upper and lower surfaces of said spring assembly, portions of said interconnecting segments extending beyond the periphery of said coils, the axes of said coils being disposed generally perpendicular to the upper and lower surfaces of said spring assembly, and helical lacing means extending longitudinally parallel to said rows for the length of said rows said helical lacing means being wound through sections of said interconnecting segments so as to secure said rows of coils in an assembled relation.
Claim 11
Dependent Claim
154 words
A spring assembly having a long longitudinal dimension and a shorter transverse dimension, said spring assembly comprising, a plurality of parallel rows of coils, each of said rows extending longitudianlly of the spring unit, each of said rows being formed from a single continuous piece of wire and each of said rows containing a plurality of coils interconnected by generally interconnecting segments, alternate ones of said interconnecting segments being disposed in the planes of the upper and lower surfaces of said spring assembly, portions of said interconnecting segments extending beyond the periphery of said coils, the axes of said coils being disposed generally perpendicular to the upper and lower surfaces of said spring assembly, and helical lacing means extending longitudinally parallel to said rows for the length of said rows said helical lacing means being wound through sections of said interconnecting segments so as to secure said rows of coils in an assembled relation.
Claim 12
Dependent Claim
55 words
The spring assembly of Claim 8 in which said coils in a selected section of each of said longitudinally extending rows of coils are spaced differently than the coils in another section of each of said rows whereby greater firmness is imparted to one section of said spring assembly than is imparted to another section.
References Cited (Backward Citations)
US3911511A
Cited
US4236262A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.