Patent US4469738A successfully refreshed from Google Patents.
US4469738A
Expired / Lapsed
US
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Oriented net furniture support material
Assignee: EIDP Inc
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Filing: 1983-07-26
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Granted: 1984-09-04
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Expires: 2003-07-26
Abstract
Abstract Oriented net furniture support materials made from thermoplastic elastomers have been found to possess a unique combination of properties including high strength, low creep and good flexibility. These furniture support materials can be made by extrusion through a pair of concentric die sets rotating transversely to one another or by weaving of monofilament.
Inventors
- 👤 Louis E. Himelreich, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:29
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/28; A47C7/32; A47C23/00; A47C23/12; A47C23/18; D; D04; D04H; D04H3/00; D04H3/08; D04H3/14; Y; Y10; Y10S; Y10S264/00; Y10S264/81; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24826; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/105
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
96 words
A furniture support material in a net configuration comprising crossed strands of oriented thermoplastic elastomer selected from the group consisting of copolyetheresters, polyurethanes and polyesteramides, which strands are bonded to each other at the points at which they cross, which furniture material has a tear resistance value of at least 0.40 joules/meter-gram/meter 2 , has a dead load static creep K-factor value of less than 6000 percent change in deflection-grams/meter 2 , has a deflection value of 1.25-7.50 cm, and has a dynamic creep K-factor value of less than 5000 percent change in deflection-grams/meter 2 .
Claim 2
Dependent Claim
96 words
A furniture support material in a net configuration comprising crossed strands of oriented thermoplastic elastomer selected from the group consisting of copolyetheresters, polyurethanes and polyesteramides, which strands are bonded to each other at the points at which they cross, which furniture material has a tear resistance value of at least 0.40 joules/meter-gram/meter 2 , has a dead load static creep K-factor value of less than 6000 percent change in deflection-grams/meter 2 , has a deflection value of 1.25-7.50 cm, and has a dynamic creep K-factor value of less than 5000 percent change in deflection-grams/meter 2 .
Claim 3
Dependent Claim
19 words
The furniture support material of claim 1 wherein the strands are bonded to each other by their own substance.
Claim 4
Dependent Claim
19 words
The furniture support material of claim 1 wherein all of the crossing strands are of the same thermoplastic elastomer.
Claim 5
Dependent Claim
39 words
The furniture support material of claim 1 wherein the strands are of a sheath/core configuration wherein the sheath is a thermoplastic elastomer whose melting point is substantially lower than the melting point of the thermoplastic elastomer in the core.
Claim 6
Dependent Claim
54 words
The furniture support material of claim 1 which has been made by extrusion of thermoplastic elastomer through a pair of die sets which are relatively displaced transversely to the direction of extrusion into positions where the die orifices in one set are successively in registration and in non-registration with those of the other set.
Claim 7
Dependent Claim
44 words
The furniture support material of claim 1 which has been made by extrusion of monofilaments of thermoplastic elastomer, orientation of the monofilaments, arrangement of the monofilaments in a crossing configuration, and bonding the filaments to each other at the points at which they cross.
Claim 8
Dependent Claim
25 words
The furniture support material of claim 1 wherein the thermoplastic elastomer is a copolyetherester and contains at least 50 weight percent short chain ester units.
Claim 9
Dependent Claim
37 words
The furniture support material of claim 7 wherein the copolyether elastomer contains about 81.6 weight percent butylene terephthalate short chain ester units and about 18.4 weight percent long chain ester units derived from PTMEG and terephthalic acid.
Claim 10
Dependent Claim
37 words
The furniture support material of claim 7 wherein the copolyetherester elastomer contains about 60 weight percent butylene terephthalate short chain ester units and about 40 weight percent long chain ester units derived from PTMEG and terephthalic acid.
Claim 11
Dependent Claim
53 words
The furniture support material of claim 7 wherein the copolyetherester elastomer is a sheath/core monofilament wherein the core copolyetherester elastomer contains at least 50 weight percent short chain ester units and the sheath copolyetherester elastomer has a melting point at least 20° C. lower than the melting point of the core copolyetherester elastomer.
Claim 12
Dependent Claim
16 words
The furniture support material of claim 1 wherein the product orientation ratio is at least 3.0X.
Claim 13
Dependent Claim
39 words
The furniture support material of claim 1 wherein the dead load states creep K-factor value is less than 3000 percent change in deflection-grams/meter 2 and the dynamic creep K-factor is less than 2500 percent change in deflection-grams/meter 2 .
Claim 14
Dependent Claim
33 words
The furniture support material of claim 1 wherein the dead load static creep is less than 20.0 percent change in deflection and the dynamic creep is less than 22.0 percent change in deflection.
Claim 15
Dependent Claim
33 words
The furniture support material of claim 11 where the dead load static creep is less than 14.0 percent change in deflection and the dynamic creep is less than 8.0 percent change in deflection.
Claim 16
Dependent Claim
19 words
The furniture support material of claim 1 wherein the thermoplastic elastomer has an M 20 strength of 34-310 MPa.
Claim 17
Dependent Claim
19 words
The furniture support material of claim 1 wherein the thermoplastic elastomer has an M 20 strength of 103-172 MPa.
Claim 18
Dependent Claim
13 words
The furniture support material of claim 1 wherein the thermoplastic elastomer is polyesterurethane.
Claim 19
Dependent Claim
38 words
The furniture support material of claim 1 wherein the elastomer strands are spaced such that the number of picks/meter is in the range of 16/(a) to 160/(a) where (a) is the strand cross-sectional area in mm 2 .
Claim 20
Dependent Claim
95 words
The furniture support material of claim 1 wherein: (a) the elastomer is a copolyetherester having an M 20 strength of 103-172 MPa, (b) the elastomer strand is a sheath/core monofilament wherein the sheath contains at least 25 weight percent short-chain ester units, the core contains at least 50 weight percent short-chain ester units, and the sheath elastomer has a melting point at least 20° C. lower than the melting point of the core elastomer, and (c) the elastomer strands are bonded at the points at which they cross by partial melting of the sheath elastomer.
Claim 21
Dependent Claim
12 words
A seat bottom made from the furniture support material of claim 1.
Claim 22
Dependent Claim
12 words
A seat back made from he furniture support material of claim 1.
Claim 23
Dependent Claim
13 words
A bedding support system made from the furniture support material of claim 1.
Claim 24
Dependent Claim
13 words
The furniture support material of claim 1 wherein the thermoplastic elastomer is polyetheresteramide.
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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) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |