US4172589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cushion support element
Assignee: L&P Swiss Holding GmbH
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Filing: 1978-02-13
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Granted: 1979-10-30
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Expires: 1998-02-13
Abstract
Abstract In a cushion support element for incorporation in a structure such as a seat, bed or the like comprising a platform formed by lateral side edge wires sheathed in a compressible material, and a plurality of transverse spring wires wound around the sheathing of the edge wires, an improved connection is provided between the transverse wires and the edge wires in that the transverse wires are wound around the sheathing, hooked over upon themselves to provide an interlocked connection and then bent back towards the sheathing so that their free ends engage the latter. This both shields the sharp ends of the transverse wires and also urges the sheathing into the crook of the wound transverse wire to ensure a tighter connection.
Inventors
- 👤 David T. Griffiths
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:27
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/28; A47C7/32; A47C23/00; A47C23/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
203 words
A cushion support element, comprising two opposed side strands each having an external surface of compressible material, and a plurality of parallel transverse wires of tempered spring wire connected between said side strands, wherein each said spring wire at its point of connection with a respective side strand is wound around said side strand through an angle of less than 360°, is then hooked over upon itself at a point spaced from the surface of the said side strand to provide a terminal portion which extends back into contact with the surface of said side strand to engage the latter at a point spaced from the axis of said transverse wire in a direction parallel to the axis of said side strand, whereby said terminal portion forms a gusset between said transverse wire and the respective side strand to brace them against relative angular movement therebetween, and wherein the configuration of the respective ends of each of the transverse wires is symmetrical whereby angular movement of each of said transverse wires relative to the axis of the side strands is resisted in one direction by the gusset at one end thereof and in the other direction by the gusset at the other end.
Claim 2
Dependent Claim
203 words
A cushion support element, comprising two opposed side strands each having an external surface of compressible material, and a plurality of parallel transverse wires of tempered spring wire connected between said side strands, wherein each said spring wire at its point of connection with a respective side strand is wound around said side strand through an angle of less than 360°, is then hooked over upon itself at a point spaced from the surface of the said side strand to provide a terminal portion which extends back into contact with the surface of said side strand to engage the latter at a point spaced from the axis of said transverse wire in a direction parallel to the axis of said side strand, whereby said terminal portion forms a gusset between said transverse wire and the respective side strand to brace them against relative angular movement therebetween, and wherein the configuration of the respective ends of each of the transverse wires is symmetrical whereby angular movement of each of said transverse wires relative to the axis of the side strands is resisted in one direction by the gusset at one end thereof and in the other direction by the gusset at the other end.
Claim 3
Dependent Claim
26 words
An element according to claim 1, wherein the said terminal portion at each of said transverse wires is firmly embedded in and deforms said compressible material.
Claim 4
Dependent Claim
50 words
An element according to claim 1, wherein the said transverse wires are angled in the region of the points at which they are hooked over upon themselves, so that the axes of the said side strands are substantially coplanar with the axes of the intermediate portions of said transverse wires.
References Cited (Backward Citations)
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FR1052920A
Cited
US3539172A
Cited
GB1193065A
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US3667749A
Cited
US3865675A
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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) | 1982-10-29 | 1983-04-30 | 1983-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-29 | 1987-04-30 | 1987-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-29 | 1991-04-30 | 1991-10-30 | $7700.00 | Window Closed / Lapsed |