Patent US3681794A successfully refreshed from Google Patents.
US3681794A
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Box spring and method of assembly
Assignee: STANDARD BOX SPRING CO
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Filing: 1970-12-14
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Granted: 1972-08-08
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Expires: 1990-12-14
Abstract
Abstract A box spring includes a top mat comprising two groups of wires welded in right-angular relation, and a border frame. The box spring also includes a number of saddle-shaped springs, each of which has parallel bottom legs extending into upwardly sloping legs, and top transverse legs which connect each pair of the upwardly sloping legs together. One of the groups of wires in the top mat is formed with return bends which provide channels originally open toward the lower surface of the mat. The transverse top legs of the springs are received in these channels and secured by upsetting the channels. The channels are spaced apart in the top mat at distances equal to the desired spacing between the top transverse legs of the saddle springs; the top mat thus forms a jig for positioning the saddle springs during assembly of the box spring. The bottom legs of the saddle springs may be attached to a wood bottom frame by means of disk fasteners which are received in loops formed in these legs.
Inventors
- 👤 Fred A Ciampa
- 👤 Angelo Serafini
- 👤 Louis Mazzarella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:10
CPC Classifications
A; A47; A47C; A47C23/00; A47C23/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
181 words
A box spring comprising: a bottom frame; a number of saddle-shaped springs each having a pair of bottom legs extending at the opposite ends thereof into two pairs of upwardly sloping legs, and a pair of top legs each connecting one pair of said upwardly sloping legs together, said top legs of each spring being spaced apart a predetermined distance, said bottom legs being attached to said bottom frame; a top mat formed of a border frame and two groups of wires lying parallel to a common plane and intersecting one another, said wires being welded to one another and to said border frame at the intersections therebetween; the wires of one of said groups being formed with a plurality of channels originally open to the lower surface of said top mat, said wires of said one group being spaced apart substantially said predetermined distance, said top legs of each said spring being freely received in channels of different wires of said one group, said channels being bent to overlie said top legs to lock said springs to said top mat.
Claim 2
Dependent Claim
181 words
A box spring comprising: a bottom frame; a number of saddle-shaped springs each having a pair of bottom legs extending at the opposite ends thereof into two pairs of upwardly sloping legs, and a pair of top legs each connecting one pair of said upwardly sloping legs together, said top legs of each spring being spaced apart a predetermined distance, said bottom legs being attached to said bottom frame; a top mat formed of a border frame and two groups of wires lying parallel to a common plane and intersecting one another, said wires being welded to one another and to said border frame at the intersections therebetween; the wires of one of said groups being formed with a plurality of channels originally open to the lower surface of said top mat, said wires of said one group being spaced apart substantially said predetermined distance, said top legs of each said spring being freely received in channels of different wires of said one group, said channels being bent to overlie said top legs to lock said springs to said top mat.
Claim 3
Dependent Claim
43 words
A box spring as recited in claim 1, said bottom legs being formed with partial loops, together with a plurality of disks each received in one of said loops, and means securing said disks to said bottom frame to lock said springs thereto.
Claim 4
Dependent Claim
36 words
A box spring as recited in claim 2, in which each of said disks has a recessed circular body portion fitting snugly within one of said partial loops, and a flange overlying said one partial loop.
Claim 5
Dependent Claim
32 words
A box spring as recited in claim 1, each of said top legs eXtending parallel and adjacent to the wire of said one group which has a channel receiving that top leg.
Claim 6
Dependent Claim
40 words
A box spring as recited in claim 1, said bottom legs being formed with partial loops, together with a plurality of disks each received in one of said partial loops, and fastening means securing said disks to said bottom frame.
Claim 7
Dependent Claim
56 words
A box spring as recited in claim 5, said bottom frame including a plurality of slats extending transversely to said bottom legs, said saddle springs having their bottom legs bridging adjacent pairs of said slats, each bottom leg being formed with a pair of said partial loops each overlying one of an adjacent pair of slats.
Claim 8
Dependent Claim
51 words
A box spring as recited in claim 1, in which said bottom frame includes a plurality of spaced slats, the bottom legs of said saddle springs extending lengthwise of said slats, each bottom leg being formed with one of said partial loops in a position to overlie one of said slats.
Claim 9
Independent Claim
220 words
The method of making a box spring assembly which comprises the steps of: forming a plurality of channels in longitudinally-spaced relation in each of a first group of wires; forming a top mat by arranging a second group of wires in parallel spaced relation, arranging said first group of wires in parallel spaced relation to overlie and intersect said second group of wires, with the channels of said first group open toward one surface of the top mat, and the wires of said one group being spaced apart a predetermined distance; arranging a wire border frame to intersect ends of both said first and second groups of wires; and welding said wires and said border frame together at points of mutual intersection; forming a plurality of saddle-shaped springs each with a pair of bottom legs extending at the opposite ends thereof into two pairs of upwardly sloping legs, and a pair of top legs each connecting one pair of said upwardly sloping legs together and being spaced apart substantially said predetermined distance; inserting the top legs of said springs each into more than one of said channels in different ones of said first group of wires, and upsetting said channels to lock said springs to said top mat; and attaching a bottom frame to said bottom legs of said springs.
Claim 10
Independent Claim
220 words
The method of making a box spring assembly which comprises the steps of: forming a plurality of channels in longitudinally-spaced relation in each of a first group of wires; forming a top mat by arranging a second group of wires in parallel spaced relation, arranging said first group of wires in parallel spaced relation to overlie and intersect said second group of wires, with the channels of said first group open toward one surface of the top mat, and the wires of said one group being spaced apart a predetermined distance; arranging a wire border frame to intersect ends of both said first and second groups of wires; and welding said wires and said border frame together at points of mutual intersection; forming a plurality of saddle-shaped springs each with a pair of bottom legs extending at the opposite ends thereof into two pairs of upwardly sloping legs, and a pair of top legs each connecting one pair of said upwardly sloping legs together and being spaced apart substantially said predetermined distance; inserting the top legs of said springs each into more than one of said channels in different ones of said first group of wires, and upsetting said channels to lock said springs to said top mat; and attaching a bottom frame to said bottom legs of said springs.
Claim 11
Dependent Claim
22 words
A box spring as recited in claim 1, said two pairs of upwardly sloping legs being oppositely inclined relative to one another.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |