Patent US5775779A successfully refreshed from Google Patents.
US5775779A
Expired / Lapsed
US
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Polyurethane thermoplastic elastomer membrane for seat suspension
Assignee: Lear Corp
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Filing: 1997-03-27
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Granted: 1998-07-07
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Expires: 2017-03-27
Abstract
Abstract A seat suspension membrane is provided which consists substantially of a biaxially oriented film of a polyurethane thermoplastic elastomer composition, which composition is characterized by substantially linear polymer molecules containing alternate rigid segments of diisocyanate short chain diol addition reaction products and flexible segments of relatively high molecular weight polyether diol or polyester diol segments and which is produced from a relatively soft film composition.
Inventors
- 👤 Ismat Ali Abu-Isa
- 👤 Craig Bryant Jaynes
- 👤 Youssef Tishbi
- 👤 Joseph John Zwolinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:43
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/70; A; A47; A47C; A47C7/00; A47C7/02; A47C7/28; A47C7/282
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
99 words
A seat comprising a seat frame carrying a seat suspension membrane for receiving a seating load, said seat suspension membrane having a side-to-side direction and a front-to-back direction with respect to said seat, said seat suspension membrane consisting essentially of a polyurethane thermoplastic elastomer membrane that is oriented in at least one of said directions, said polyurethane thermoplastic elastomer consisting substantially of generally linear polymer molecules that are characterized by rigid segments of diisocyanate and short chain diol addition reaction products and flexible segments of a polymeric species selected from the group consisting of polyether diols or polyester diols.
Claim 2
Dependent Claim
99 words
A seat comprising a seat frame carrying a seat suspension membrane for receiving a seating load, said seat suspension membrane having a side-to-side direction and a front-to-back direction with respect to said seat, said seat suspension membrane consisting essentially of a polyurethane thermoplastic elastomer membrane that is oriented in at least one of said directions, said polyurethane thermoplastic elastomer consisting substantially of generally linear polymer molecules that are characterized by rigid segments of diisocyanate and short chain diol addition reaction products and flexible segments of a polymeric species selected from the group consisting of polyether diols or polyester diols.
Claim 3
Dependent Claim
25 words
A vehicle seat as recited in claim 1 in which the molecular ratio of said rigid segments to said flexible segments is less than 1.5.
Claim 4
Dependent Claim
50 words
A vehicle seat as recited in claim 1 in which said oriented polyurethane thermoplastic elastomer is the extruded and axially drawn product of a polyurethane thermoplastic elastomer initially having a Shore A hardness value of 95 or less and a room temperature elongation at break that is greater than 300%.
Claim 5
Dependent Claim
99 words
A seat comprising a seat frame carrying a seat suspension membrane for receiving a seating load, said seat suspension membrane having a side-to-side direction and a front-to-back direction with respect to said seat, said seat suspension membrane consisting essentially of a polyurethane thermoplastic elastomer membrane that is drawn and oriented in both of said directions, said polyurethane thermoplastic elastomer consisting substantially of generally linear polymer molecules that are characterized by rigid segments of diisocyanate and short chain diol addition reaction products and flexible segments of a polymeric species selected from the group consisting of polyether diols or polyester diols.
Claim 6
Dependent Claim
99 words
A seat comprising a seat frame carrying a seat suspension membrane for receiving a seating load, said seat suspension membrane having a side-to-side direction and a front-to-back direction with respect to said seat, said seat suspension membrane consisting essentially of a polyurethane thermoplastic elastomer membrane that is drawn and oriented in both of said directions, said polyurethane thermoplastic elastomer consisting substantially of generally linear polymer molecules that are characterized by rigid segments of diisocyanate and short chain diol addition reaction products and flexible segments of a polymeric species selected from the group consisting of polyether diols or polyester diols.
Claim 7
Dependent Claim
25 words
A vehicle seat as recited in claim 4 in which the molecular ratio of said rigid segments to said flexible segments is less than 1.5.
Claim 8
Dependent Claim
50 words
A vehicle seat as recited in claim 4 in which said oriented polyurethane thermoplastic elastomer is the extruded and biaxially drawn product of a polyurethane thermoplastic elastomer initially having a Shore A hardness value of 95 or less and a room temperature elongation at break that is greater than 300%.
Claim 9
Dependent Claim
43 words
A biaxially-oriented polyurethane thermoplastic elastomer membrane, said membrane being the extruded and biaxially drawn product of a polyurethane thermoplastic elastomer initially having a Shore A hardness value of 95 or less and a room temperature elongation at break that is greater than 300%.
Claim 10
Dependent Claim
43 words
A biaxially-oriented polyurethane thermoplastic elastomer membrane, said membrane being the extruded and biaxially drawn product of a polyurethane thermoplastic elastomer initially having a Shore A hardness value of 95 or less and a room temperature elongation at break that is greater than 300%.
Claim 11
Dependent Claim
85 words
A biaxially-oriented polyurethane thermoplastic elastomer membrane, said membrane being the extruded and biaxially drawn product of a polyurethane thermoplastic elastomer initially having a Shore A hardness value of 95 or less and a room temperature elongation at break that is greater than 300%, said elastomer consisting essentially of generally linear polymer molecules that are characterized by rigid segments of diisocyanate and short chain diol addition reaction products and flexible segments of a polymeric species selected from the group consisting of polyether diols or polyester diols.
Claim 12
Dependent Claim
85 words
A biaxially-oriented polyurethane thermoplastic elastomer membrane, said membrane being the extruded and biaxially drawn product of a polyurethane thermoplastic elastomer initially having a Shore A hardness value of 95 or less and a room temperature elongation at break that is greater than 300%, said elastomer consisting essentially of generally linear polymer molecules that are characterized by rigid segments of diisocyanate and short chain diol addition reaction products and flexible segments of a polymeric species selected from the group consisting of polyether diols or polyester diols.
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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) | 2001-07-06 | 2002-01-05 | 2002-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-07-06 | 2006-01-05 | 2006-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-07-06 | 2010-01-05 | 2010-07-07 | $7700.00 | Window Closed / Lapsed |