US4766625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Box spring having rows of coil springs formed from a single length of wire
Assignee: L&P Property Management Co
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Filing: 1986-10-17
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Granted: 1988-08-30
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Expires: 2006-10-17
Abstract
Abstract A box spring comprises a rectangular base frame, a wire grid, and a plurality of parallel rows of coil springs supporting the grid atop the base frame. Each row of coil springs is made from a single continuous length of wire in which adjacent coils are interconnected by an interconnecting segment of the wire. Each interconnecting segment is in the form of a generally diagonally extending bar having substantially parallel end portions interconnected at the center by an offset section, which offset section is formed by rotating the offset section relative to the parallel end portions while the end portions are restrained against rotation.
Inventors
- 👤 Chester R. Yates
- 👤 Marvin D. Selzer
- 👤 Henry G. Mohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:44
CPC Classifications
A; A47; A47C; A47C23/00; A47C23/04; A47C23/043; A47C23/0436; B; B21; B21F; B21F3/00; B21F3/12; B21F33/00; B21F33/04
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
266 words
A box spring for supporting a bedding mattress, which box spring comprises a generally planar base, a planar wire grid, and a plurality of parallel rows of coil springs resiliently supporting said wire grid spaced from said base, each of said rows of coil springs being formed from a single continuous length of wire and each of said rows containing a plurality of coils interconnected by interconnecting segments, alternate ones of said interconnecting segments being disposed in the planes of said base and grid, the axes of said coils being disposed perpendicular to the plane of said base and grid, each of said coils terminating in a cordal flat bar located in a plane of said base and grid, and the cordal flat bars of adjacent coils being interconnected by said interconnecting segments, each of said interconnecting segments being in the form of a generally diagonally extending bar having substantially parallel end portions connected to said cordal flat bars at a point on said cordal flat bars which is tangential to said coils, said substantially parallel end portions of said diagonally extending bar being connected at the center by an offset section, said offset section forming an obtuse angle with each of said parallel end portions, said offset section being formed by rotating said offset section while said parallel end portions are restrained against rotation so as to convert said diagonally extending bar from a non-planar to a planar configuration, padding located on the top side of said wire grid, and an upholstered covering encasing said base, rows of coil springs, wire grid, and said padding.
Claim 2
Dependent Claim
266 words
A box spring for supporting a bedding mattress, which box spring comprises a generally planar base, a planar wire grid, and a plurality of parallel rows of coil springs resiliently supporting said wire grid spaced from said base, each of said rows of coil springs being formed from a single continuous length of wire and each of said rows containing a plurality of coils interconnected by interconnecting segments, alternate ones of said interconnecting segments being disposed in the planes of said base and grid, the axes of said coils being disposed perpendicular to the plane of said base and grid, each of said coils terminating in a cordal flat bar located in a plane of said base and grid, and the cordal flat bars of adjacent coils being interconnected by said interconnecting segments, each of said interconnecting segments being in the form of a generally diagonally extending bar having substantially parallel end portions connected to said cordal flat bars at a point on said cordal flat bars which is tangential to said coils, said substantially parallel end portions of said diagonally extending bar being connected at the center by an offset section, said offset section forming an obtuse angle with each of said parallel end portions, said offset section being formed by rotating said offset section while said parallel end portions are restrained against rotation so as to convert said diagonally extending bar from a non-planar to a planar configuration, padding located on the top side of said wire grid, and an upholstered covering encasing said base, rows of coil springs, wire grid, and said padding.
Claim 3
Dependent Claim
237 words
A box spring for supporting a bedding mattress, which box spring comprises a generally planar base, a planar wire grid, and a plurality of parallel rows of coil springs resiliently supporting said wire grid spaced from said base, each of said rows of coil springs being formed from a single continuous length of wire and each of said rows containing a plurality of coils interconnected by interconnecting segments, alternate ones of said interconnecting segments being disposed in the planes of said base and grid, the axes of said coils being disposed perpendicular to the plane of said base and grid, and each of said coils terminating in a cordal flat bar located in a plane of said base and grid, and the cordal flat bars of adjacent coils being interconnected by said interconnecting segments, each of said interconnecting segments comprising a generally diagonally extending bar having substantially parallel end portions connected to said cordal flat bars at a point on said cordal flat bars which is tangential to said coils, said substantially parallel end portions of said diagonally extending bar being connected at the center by an offset section, said offset section forming an obtuse angle with each of said parallel end portions, said offset section being formed by rotating said offset section while said parallel end portions are restrained against rotation so as to convert said diagonally extending bar from a non-planar to a planar configuration.
Claim 4
Dependent Claim
237 words
A box spring for supporting a bedding mattress, which box spring comprises a generally planar base, a planar wire grid, and a plurality of parallel rows of coil springs resiliently supporting said wire grid spaced from said base, each of said rows of coil springs being formed from a single continuous length of wire and each of said rows containing a plurality of coils interconnected by interconnecting segments, alternate ones of said interconnecting segments being disposed in the planes of said base and grid, the axes of said coils being disposed perpendicular to the plane of said base and grid, and each of said coils terminating in a cordal flat bar located in a plane of said base and grid, and the cordal flat bars of adjacent coils being interconnected by said interconnecting segments, each of said interconnecting segments comprising a generally diagonally extending bar having substantially parallel end portions connected to said cordal flat bars at a point on said cordal flat bars which is tangential to said coils, said substantially parallel end portions of said diagonally extending bar being connected at the center by an offset section, said offset section forming an obtuse angle with each of said parallel end portions, said offset section being formed by rotating said offset section while said parallel end portions are restrained against rotation so as to convert said diagonally extending bar from a non-planar to a planar configuration.
Claim 5
Dependent Claim
35 words
The box spring of claim 2 wherein said wire grid comprises a plurality of intersecting wires, said cordal flat bars in the plane of said wire grid being connected to wires of said wire grid.
Claim 6
Dependent Claim
26 words
The box spring of claim 3 wherein said center offset sections of said interconnecting segments in the plane of said base are secured to said base.
Claim 7
Dependent Claim
234 words
A spring assembly having upper and lower planar surfaces, said assembly comprising a plurality of parallel rows of coil springs, each of said rows of coil springs being formed from a single continuous length of wire and each of said rows containing a plurality of coils interconnected by interconnecting segments, alternate ones of said interconnecting segments being disposed in the planes of said upper and lower surfaces of said spring assembly, the axes of said coils being disposed perpendicular to the planes of said upper and lower planar surfaces, and each of said coils terminating in a cordal flat bar located in the plane of said upper and lower surfaces, the cordal flat bars of adjacent coils being interconnected by said interconnecting segments, and each of said interconnecting segments comprising a generally diagonally extending bar having substantially parallel end portions connected to said cordal flat bars at a point on said cordal flat bars which is generally tangential to said coils, said substantially parallel end portions of said diagonally extending bar being connected at the center by an offset section, said offset section forming an obtuse angle with each of said parallel end portions, said offset section being formed by rotation of said offset section relative to said parallel end portions while said end portions are restrained against rotation so as to convert said diagonally extending bar from a non-planar to a planar configuration.
Claim 8
Dependent Claim
234 words
A spring assembly having upper and lower planar surfaces, said assembly comprising a plurality of parallel rows of coil springs, each of said rows of coil springs being formed from a single continuous length of wire and each of said rows containing a plurality of coils interconnected by interconnecting segments, alternate ones of said interconnecting segments being disposed in the planes of said upper and lower surfaces of said spring assembly, the axes of said coils being disposed perpendicular to the planes of said upper and lower planar surfaces, and each of said coils terminating in a cordal flat bar located in the plane of said upper and lower surfaces, the cordal flat bars of adjacent coils being interconnected by said interconnecting segments, and each of said interconnecting segments comprising a generally diagonally extending bar having substantially parallel end portions connected to said cordal flat bars at a point on said cordal flat bars which is generally tangential to said coils, said substantially parallel end portions of said diagonally extending bar being connected at the center by an offset section, said offset section forming an obtuse angle with each of said parallel end portions, said offset section being formed by rotation of said offset section relative to said parallel end portions while said end portions are restrained against rotation so as to convert said diagonally extending bar from a non-planar to a planar configuration.
Claim 9
Dependent Claim
71 words
The spring assembly of claim 5 which further includes a substantially planar wire grid having a first set of parallel spaced wires and a second set of parallel spaced wires, said second set of parallel spaced wires extending normal to said first set of parallel spaced wires, and means connecting selected wires of at least one of said sets of wires of said grid to cordal flat bars of said coils.
Claim 10
Dependent Claim
59 words
The spring assembly of claim 6 wherein the first and second sets of wires of said grid are welded at intersections of said first and second sets of wires of said grid, and said wire grid further including a border wire surrounding the grid and attached to ends of said first and second sets of wires of said grid.
Claim 11
Dependent Claim
214 words
A spring assembly having upper and lower planar surfaces, said assembly comprising a plurality of parallel rows of coil springs, each of said rows of coil springs being formed from a single continuous length of wire and each of said rows containing a plurality of coils, each of said coils terminating in end loops, the end loops of adjacent coils being interconnected by interconnecting segments, alternate ones of said interconnecting segments being disposed in the planes of said upper and lower surfaces of said spring assembly, the axes of said coils being disposed perpendicular to the planes of said upper and lower planar surfaces, and the improvement wherein each of said interconnecting segments comprises a generally diagonally extending bar having substantially parallel end portions connected to said coils at a point on said coils which is generally tangential to said coils, said substantially parallel end portions of said diagonally extending bar being connected at the center by an offset section, said offset section forming an obtuse angle with each of said parallel end portions, said offset section being formed by rotation of said offset section relative to said parallel end portions while said end portions are restrained against rotation so as to convert said diagonally extending bar from a non-planar to a planar configuration.
Claim 12
Dependent Claim
214 words
A spring assembly having upper and lower planar surfaces, said assembly comprising a plurality of parallel rows of coil springs, each of said rows of coil springs being formed from a single continuous length of wire and each of said rows containing a plurality of coils, each of said coils terminating in end loops, the end loops of adjacent coils being interconnected by interconnecting segments, alternate ones of said interconnecting segments being disposed in the planes of said upper and lower surfaces of said spring assembly, the axes of said coils being disposed perpendicular to the planes of said upper and lower planar surfaces, and the improvement wherein each of said interconnecting segments comprises a generally diagonally extending bar having substantially parallel end portions connected to said coils at a point on said coils which is generally tangential to said coils, said substantially parallel end portions of said diagonally extending bar being connected at the center by an offset section, said offset section forming an obtuse angle with each of said parallel end portions, said offset section being formed by rotation of said offset section relative to said parallel end portions while said end portions are restrained against rotation so as to convert said diagonally extending bar from a non-planar to a planar configuration.
Claim 13
Dependent Claim
232 words
A box spring for supporting a bedding mattress, which box spring comprises a generally planar base, a planar wire grid, and a plurality of parallel rows of coil springs resiliently supporting said wire grid spaced from said base, each of said rows of coil springs being formed from a single continuous length of wire and each of said rows containing a plurality of coils interconnected by interconnecting segments, alternate ones of said interconnecting segments being disposed in the planes of said base and grid, the axes of said coils being disposed perpendicular to the planes of said base and grid, and each of said coils terminating in a cordal flat bar located in a plane of said base and grid, and the cordal flat bars of adjacent coils being interconnected by said interconnecting segments, each of said interconnecting segments having substantially parallel end portions connected to said cordal flat bars at a point on said cordal flat bars which is generally tangential to said coils, said substantially parallel end portions of said diagonally extending bar being connected at the center by an offset section, said offset section forming an obtuse angle with each of said parallel end portions, said offset section being formed by rotating said offset section while said parallel end portions are restrained against rotation so as to convert said diagonally extending bar from a non-planar to a planar configuration.
Claim 14
Dependent Claim
232 words
A box spring for supporting a bedding mattress, which box spring comprises a generally planar base, a planar wire grid, and a plurality of parallel rows of coil springs resiliently supporting said wire grid spaced from said base, each of said rows of coil springs being formed from a single continuous length of wire and each of said rows containing a plurality of coils interconnected by interconnecting segments, alternate ones of said interconnecting segments being disposed in the planes of said base and grid, the axes of said coils being disposed perpendicular to the planes of said base and grid, and each of said coils terminating in a cordal flat bar located in a plane of said base and grid, and the cordal flat bars of adjacent coils being interconnected by said interconnecting segments, each of said interconnecting segments having substantially parallel end portions connected to said cordal flat bars at a point on said cordal flat bars which is generally tangential to said coils, said substantially parallel end portions of said diagonally extending bar being connected at the center by an offset section, said offset section forming an obtuse angle with each of said parallel end portions, said offset section being formed by rotating said offset section while said parallel end portions are restrained against rotation so as to convert said diagonally extending bar from a non-planar to a planar configuration.
Claim 15
Dependent Claim
35 words
The box spring of claim 9 wherein said wire grid comprises a plurality of intersecting wires, said cordal flat bars in the plane of said wire grid being connected to wires of said wire grid.
Claim 16
Dependent Claim
26 words
The box spring of claim 10 wherein said center offset sections of said interconnecting segments in the plane of said base are secured to said base.
Claim 17
Dependent Claim
228 words
A spring assembly having upper and lower planar surfaces, said assembly comprising a plurality of parallel rows of coil springs, each of said rows of coil springs being formed from a single continuous length of wire and each of said rows containing a plurality of coils interconnected by interconnecting segments, alternate ones of said interconnecting segments being disposed in the planes of said upper and lower surfaces of said spring assembly, the axes of said coils being disposed perpendicular to the planes of said upper and lower planar surfaces, and each of said coils terminating in a cordal flat bar located in the plane of said upper and lower surfaces, the cordal flat bars of adjacent coils being interconnected by said interconnecting segments, and each of said interconnecting segments having substantially parallel end portions connected to said cordal flat bars at a point on said cordal flat bars which is generally tangential to said coils, said substantially parallel end portions of said diagonally extending bar being connected at the center by an offset section, said offset section forming an obtuse angle with each of said parallel end portions, said offset section being formed by rotation of said offset section relative to said parallel end portions while said end portions are restrained against rotation so as to convert said diagonally extending bar from a non-planar to a planar configuration.
Claim 18
Dependent Claim
228 words
A spring assembly having upper and lower planar surfaces, said assembly comprising a plurality of parallel rows of coil springs, each of said rows of coil springs being formed from a single continuous length of wire and each of said rows containing a plurality of coils interconnected by interconnecting segments, alternate ones of said interconnecting segments being disposed in the planes of said upper and lower surfaces of said spring assembly, the axes of said coils being disposed perpendicular to the planes of said upper and lower planar surfaces, and each of said coils terminating in a cordal flat bar located in the plane of said upper and lower surfaces, the cordal flat bars of adjacent coils being interconnected by said interconnecting segments, and each of said interconnecting segments having substantially parallel end portions connected to said cordal flat bars at a point on said cordal flat bars which is generally tangential to said coils, said substantially parallel end portions of said diagonally extending bar being connected at the center by an offset section, said offset section forming an obtuse angle with each of said parallel end portions, said offset section being formed by rotation of said offset section relative to said parallel end portions while said end portions are restrained against rotation so as to convert said diagonally extending bar from a non-planar to a planar configuration.
Claim 19
Dependent Claim
71 words
The spring assembly of claim 12 which further includes a substantially planar wire grid having a first set of parallel spaced wires and a second set of parallel spaced wires, said second set of parallel spaced wires extending normal to said first set of parallel spaced wires, and means connecting selected wires of at least one of said sets of wires of said grid to cordal flat bars of said coils.
Claim 20
Dependent Claim
59 words
The spring assembly of claim 13 wherein the first and second sets of wires of said grid are welded at intersections of said first and second sets of wires of said grid, and said wire grid further including a border wire surrounding the grid and attached to ends of said first and second sets of wires of said grid.
Claim 21
Dependent Claim
215 words
A spring assembly having upper and lower planar surfaces, said assembly comprising a plurality of parallel rows of coil springs, each of said rows of coil springs being formed from a single continuous length of wire and each of said rows containing a plurality of coils, each of said coils terminating in end loops, the end loops of adjacent coils being interconnected by interconnecting segments, alternate ones of said interconnecting segments being disposed in the planes of said upper and lower surfaces of said spring assembly, the axes of said coils being disposed perpendicular to the planes of said upper and lower planar surfaces, and the improvement wherein each of said interconnecting segments comprises a generally diagonally extending bar having substantially parallel end portions connected to said end loops of said coils at a point on said end loops of said coils which is generally tangential to said coils, said end portions being connected at the center by an offset section, said offset section forming an obtuse angle with each of said parallel end portions, said offset section being formed by rotation of said offset section relative to said parallel end portions while said end portions are restrained against rotation so as to convert said diagonally extending bar from a non-planar to a planar configuration.
Claim 22
Dependent Claim
215 words
A spring assembly having upper and lower planar surfaces, said assembly comprising a plurality of parallel rows of coil springs, each of said rows of coil springs being formed from a single continuous length of wire and each of said rows containing a plurality of coils, each of said coils terminating in end loops, the end loops of adjacent coils being interconnected by interconnecting segments, alternate ones of said interconnecting segments being disposed in the planes of said upper and lower surfaces of said spring assembly, the axes of said coils being disposed perpendicular to the planes of said upper and lower planar surfaces, and the improvement wherein each of said interconnecting segments comprises a generally diagonally extending bar having substantially parallel end portions connected to said end loops of said coils at a point on said end loops of said coils which is generally tangential to said coils, said end portions being connected at the center by an offset section, said offset section forming an obtuse angle with each of said parallel end portions, said offset section being formed by rotation of said offset section relative to said parallel end portions while said end portions are restrained against rotation so as to convert said diagonally extending bar from a non-planar to a planar configuration.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |