US3754744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring assembly and method of manufacture
Assignee: STANDARD BOX SPRING CO
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Filing: 1971-08-06
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Granted: 1973-08-28
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Expires: 1991-08-06
Abstract
Abstract A spring assembly includes a top mesh comprising two transverse groups of wires and a border frame, which are welded together at points of intersection. The assembly also includes a number of compression springs, either coils, saddle-shaped springs, or other types. One of the groups of wires is formed with a series of bights located between the intersections of the wires, and these wires are arranged in adjacent pairs whose bights extend in opposite directions. Each of the springs has two upper portions for attachment to the mesh, and these are spaced apart a different distance than the adjacent wires, but substantially the same as the distance between the bights of adjacent wires. The springs are assembled by deflecting them or the adjacent mesh wires enough to permit the attachment portions of the springs to pass between the bights and abut against the mesh wires. The bights are then allowed to return to their original form, in which they engage the spring attachment portions to secure them in place on the mesh.
Inventors
- 👤 F Ciampa
- 👤 A Serafini
- 👤 L Mazzarella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:59
CPC Classifications
A; A47; A47C; A47C23/00; A47C23/04; A47C23/05
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
330 words
A spring assembly for furniture comprising a wire mesh formed of a border wire and two groups of wires lying parallel to a common plane, said groups of wires being transverse to one another and having their ends terminating at said border wire, said border wire and said groups of wires being welded together at points of intersection therebetween to restrain said wires against relative movement, the wires of each group being substantially parallel to one another; the wires of one of said groups being formed with a plurality of spaced bights having extent substantially parallel to said common plane and each located between adjacent points of intersection between said wires, the wires of said one group being arranged in adjcent pairs having their said bights in opposed relation and extending in opposite directions parallel to said common plane; together with a plurality of compression springs, each of said springs having at least two attachment portions extending in said common plane and spaced apart when undistorted a distance different from the spacing between each of said pairs of said one group of wires but substantially the same as the spacing between opposed ones of said bights thereof, such that said bights interfere, prior to assembly of said springs with said mesh, with placement of said attachment portions into engagement with said mesh; said wires being transversely deflectable within their elastic limits to an extent which permits said attachment portions to be passed over said bights and brought into engagement with said mesh, and said wires being elastically restored following such deflection to their original spacing; opposed bights in each of said adjacent pairs of wires engaging first surfaces of said attachment portions of a corresponding one of said springs, and said mesh engaging second surfaces of said attachment portions opposite to said first surfaces, whereby said attachment portions of each of said springs are held in assembled relation with said mesh by their engagement between said bights and said mesh.
Claim 2
Dependent Claim
330 words
A spring assembly for furniture comprising a wire mesh formed of a border wire and two groups of wires lying parallel to a common plane, said groups of wires being transverse to one another and having their ends terminating at said border wire, said border wire and said groups of wires being welded together at points of intersection therebetween to restrain said wires against relative movement, the wires of each group being substantially parallel to one another; the wires of one of said groups being formed with a plurality of spaced bights having extent substantially parallel to said common plane and each located between adjacent points of intersection between said wires, the wires of said one group being arranged in adjcent pairs having their said bights in opposed relation and extending in opposite directions parallel to said common plane; together with a plurality of compression springs, each of said springs having at least two attachment portions extending in said common plane and spaced apart when undistorted a distance different from the spacing between each of said pairs of said one group of wires but substantially the same as the spacing between opposed ones of said bights thereof, such that said bights interfere, prior to assembly of said springs with said mesh, with placement of said attachment portions into engagement with said mesh; said wires being transversely deflectable within their elastic limits to an extent which permits said attachment portions to be passed over said bights and brought into engagement with said mesh, and said wires being elastically restored following such deflection to their original spacing; opposed bights in each of said adjacent pairs of wires engaging first surfaces of said attachment portions of a corresponding one of said springs, and said mesh engaging second surfaces of said attachment portions opposite to said first surfaces, whereby said attachment portions of each of said springs are held in assembled relation with said mesh by their engagement between said bights and said mesh.
Claim 3
Dependent Claim
54 words
An assembly as recited in claim 1, in which said one group of wires are arranged with said pairs of adjacent wires having said bights thereof facing toward one another, and said compression springs are formed with said attachment portions spaced apart a distance less than the spacing between said pairs of adjacent wires.
Claim 4
Dependent Claim
55 words
An assembly as recited in claim 1, in which said one group of wires are arranged with said pairs of adjacent wires having said bights thereof facing away from one another, and said compression springs are formed with said attachment portions spaced apart a distance greater than the spacing between said pairs of adjacent wires.
Claim 5
Dependent Claim
54 words
An assembly as recited in claim 1, in which said two attachment portions of each of said compression springs are formed as substantially rectilinear top legs extending in parallelism to one another, each said attachment portion being engaged with a plurality of said bights in a corresponding one of said one group of wires.
Claim 6
Dependent Claim
54 words
An assembly as recited in claim 4, in which said compression springs are formed in a saddle shape, having a pair of bottom legs parallel to one another and extending in a plane parallel to but spaced from said top legs, and having upwardly sloping legs connecting said top legs with said bottom legs.
Claim 7
Dependent Claim
30 words
An assembly as recited in claim 1, in which each of said compression springs is formed as a helical coil of which a top turn provides said two attachment portions.
Claim 8
Dependent Claim
235 words
A spring assembly for furniture comprising a wire mesh formed of a border wire and two groups of rectilinear wire members lying parallel to a common plane, said groups of wires being transverse to one another and having their ends terminating at said border wire, said border wire and said groups of wires being welded together at points of intersection therebetween to form a mesh and to restrain said wires against relative movement, the wires within each group being substantially parallel to one another; a group of saddle-shaped compression spring members, each of said spring members having two attachment portions comprising substantially rectilinear and parallel attachment leg portions lying parallel to said common plane and being spaced apart when undistorted a predetermined distance; one of said groups of members being formed each with a plurality of spaced bights arranged in opposed pairs spaced apart a distance to cause interferenced with assembly with said members of one other of said groups when undistorted; said one group of members being transversely deflectable within their elastic limits to an extent which removes said interference, and being elastically restored following such deflection to their original spacing; said opposed pairs of bights extending in opposite directions parallel to said common plane; each of said pairs of opposed bights engaging a corresponding one of said members of said other of said groups to secure said saddle-shaped spring members to said mesh.
Claim 9
Dependent Claim
235 words
A spring assembly for furniture comprising a wire mesh formed of a border wire and two groups of rectilinear wire members lying parallel to a common plane, said groups of wires being transverse to one another and having their ends terminating at said border wire, said border wire and said groups of wires being welded together at points of intersection therebetween to form a mesh and to restrain said wires against relative movement, the wires within each group being substantially parallel to one another; a group of saddle-shaped compression spring members, each of said spring members having two attachment portions comprising substantially rectilinear and parallel attachment leg portions lying parallel to said common plane and being spaced apart when undistorted a predetermined distance; one of said groups of members being formed each with a plurality of spaced bights arranged in opposed pairs spaced apart a distance to cause interferenced with assembly with said members of one other of said groups when undistorted; said one group of members being transversely deflectable within their elastic limits to an extent which removes said interference, and being elastically restored following such deflection to their original spacing; said opposed pairs of bights extending in opposite directions parallel to said common plane; each of said pairs of opposed bights engaging a corresponding one of said members of said other of said groups to secure said saddle-shaped spring members to said mesh.
Claim 10
Dependent Claim
60 words
An assembly as recited in clAim 7, in which said one of said groups comprises a group of said wire members, said one group being arranged with pairs of adjacent wire members having said bights thereof in opposed relation and extending in opposite directions parallel to said common plane, said group of spring members comprising said other of said groups.
Claim 11
Dependent Claim
46 words
An assembly as recited in claim 7, in which said one of said groups comprises said group of spring members, each said spring member having opposed bights in said two leg portions thereof, one of said groups of wire members comprising said other of said groups.
Claim 12
Dependent Claim
56 words
An assembly as recited in claim 7, in which each of said saddle-shaped compression springs is formed with a pair of bottom legs parallel to one another and extending in a plane parallel to but spaced from said parallel attachment leg portions, and with upwardly sloping legs connecting said bottom legs with said attachment leg portions.
References Cited (Backward Citations)
GB708781A
Cited
US3049377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |