US4944992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cushion
Assignee: NHK Spring Co Ltd
•
Filing: 1989-03-07
•
Granted: 1990-07-31
•
Expires: 2009-03-07
Abstract
Abstract In a cushion which uses synthetic cotton formed of curled polyester fibers, the synthetic cotton is a mixture of first and second fibers having two different thicknesses. The fibers are three-dimensionally intertwined with air-passing space. The first fibers have the denier value of 20 or more, while the second fibers have the denier value of less than 20. The first and second fibers are mixed in the ratio of 0.5 to 2:1 by weight. These fibers of the synthetic cotton are bound at their intersections by means of a polyurethane binder such that the air-passing space is maintained.
Inventors
- 👤 Yasuo Yoneshige
- 👤 Atsushi Misumi
- 👤 Shuji Hiromoto
- 👤 Toru Sakai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:44
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/24; A47C27/00; A47C27/12; A47C27/122; B; B68; B68G; B68G1/00; D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4326; D04H1/435; D04H1/4374; D04H1/4382; D04H1/43835; D04H1/4391; D04H1/43918; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24826; Y10T428/24942; Y10T428/2495; Y10T428/29; Y10T428/2904; Y10T428/2905; Y10T428/31504; Y10T428/31551; Y10T442/00; Y10T442/60; Y10T442/659; Y10T442/671
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
79 words
A cushion comprising: synthetic cotton consisting essentially of first curled synthetic fibers with a denier value of 20 or more and second curled synthetic fibers with a denier value of less than 20, said first and second synthetic fibers being mixed in the ratio of 0.5 to 2:1 by weight and three-dimensionally intertwined with air-passing space among them; and a polyurethane binder binding the intersections of the first and second synthetic fibers, such that said air-passing space is maintained.
Claim 2
Dependent Claim
79 words
A cushion comprising: synthetic cotton consisting essentially of first curled synthetic fibers with a denier value of 20 or more and second curled synthetic fibers with a denier value of less than 20, said first and second synthetic fibers being mixed in the ratio of 0.5 to 2:1 by weight and three-dimensionally intertwined with air-passing space among them; and a polyurethane binder binding the intersections of the first and second synthetic fibers, such that said air-passing space is maintained.
Claim 3
Dependent Claim
14 words
The cushion according to claim 1, wherein said first and second fibers are polyester.
Claim 4
Dependent Claim
15 words
The cushion according to claim 2, wherein the binder content ranges from 25% to 35%.
Claim 5
Dependent Claim
22 words
The cushion according to claim 2, wherein said first and second fibers have a denier values of about 38 and 6, respectively.
Claim 6
Dependent Claim
22 words
The cushion according to claim 4, wherein said first and second fibers are mixed substantially in the ratio of 1:1 by weight.
Claim 7
Dependent Claim
21 words
The cushion according to claim 3, wherein said first and second fibers have denier values of about 38 and 14, respectively.
Claim 8
Dependent Claim
22 words
The cushion according to claim 6, wherein said first and second fibers are mixed substantially in the ratio of 1:1 by weight.
Claim 9
Dependent Claim
197 words
A seat cushion for use in a seat of an automobile, said cushion comprising an upper layer, a middle layer thicker than the upper layer, and a lower layer thinner than the middle layer, said upper layer consisting of upper synthetic cotton including curled polyester fibers with the denier value of less than 20 which are three-dimensionally intertwined with air-passing space among them, and a polyurethane binder binding the intersections of the polyester fibers, such that said air-passing space is maintained, said middle layer consisting of middle synthetic cotton including first curled polyester fibers with the denier value of 20 or more and second curled polyester fibers with the denier value of less than 20, said first and second polyester fibers being mixed and three-dimensionally intertwined with air-passing space among them, and a polyurethane binder binding the intersections of the polyester fibers, such that said air-passing space is maintained, and said lower layer consisting of lower synthetic cotton including needle-punched curled polyester fibers with the denier value of 20 or more which are three-dimensionally intertwined with air-passing spaces among them, and a polyurethane binder for binding intersections of the fibers, such that said air-passing space is maintained.
Claim 10
Dependent Claim
197 words
A seat cushion for use in a seat of an automobile, said cushion comprising an upper layer, a middle layer thicker than the upper layer, and a lower layer thinner than the middle layer, said upper layer consisting of upper synthetic cotton including curled polyester fibers with the denier value of less than 20 which are three-dimensionally intertwined with air-passing space among them, and a polyurethane binder binding the intersections of the polyester fibers, such that said air-passing space is maintained, said middle layer consisting of middle synthetic cotton including first curled polyester fibers with the denier value of 20 or more and second curled polyester fibers with the denier value of less than 20, said first and second polyester fibers being mixed and three-dimensionally intertwined with air-passing space among them, and a polyurethane binder binding the intersections of the polyester fibers, such that said air-passing space is maintained, and said lower layer consisting of lower synthetic cotton including needle-punched curled polyester fibers with the denier value of 20 or more which are three-dimensionally intertwined with air-passing spaces among them, and a polyurethane binder for binding intersections of the fibers, such that said air-passing space is maintained.
Claim 11
Dependent Claim
54 words
The seat cushion according to claim 8, wherein the fibers of said upper layer have the denier value of about 6, the first and second fibers of said middle layer have the denier values of about 38 and 6, respectively, and the fibers of said lower layer have the denier value of about 38.
Claim 12
Dependent Claim
16 words
The seat cushion according to claim 9, wherein the binder content ranges from 25% to 35%.
Claim 13
Dependent Claim
54 words
The seat cushion according to claim 8, wherein the fibers of said upper layer have the denier value of about 6, the first and second fibers of said middle layer have the denier values of about 38 and 14, respectively, and the fibers of said lower layer have the denier value of about 38.
Claim 14
Dependent Claim
16 words
The seat cushion according to claim 11, wherein the binder content ranges from 25% to 35%.
Claim 15
Dependent Claim
213 words
A seat cushion for use in a seat of an automobile, said cushion comprising an upper layer, a middle layer thicker than the upper layer, and a lower layer thinner than the middle layer, said upper layer consisting of upper synthetic cotton including curled polyester fibers with the denier value of about 20 which are three-dimensionally intertwined with air-passing space among them, and a polyurethane binder binding the intersections of the fibers, such that said air-passing space is maintained, said middle layer consisting of middle synthetic cotton including first curled polyester fibers with the denier value of about 38 and second curled polyester fibers with the denier value of about 6 said first and second polyester fibers being mixed and three-dimensionally intertwined with air-passing space among them, and a polyurethane binder binding the intersections of the polyester fibers, such that said air-passing space is maintained, and said lower layer consisting of needle-punched lower synthetic cotton including first curled polyester fibers with the denier value of about 38 and second curled polyester fibers with the denier value of about 14, said first and second polyester fibers being mixed and three-dimensionally intertwined with air-passing spaces among them, and a polyurethane binder binding the intersections of the polyester fibers, such that said air-passing space is maintained.
Claim 16
Dependent Claim
213 words
A seat cushion for use in a seat of an automobile, said cushion comprising an upper layer, a middle layer thicker than the upper layer, and a lower layer thinner than the middle layer, said upper layer consisting of upper synthetic cotton including curled polyester fibers with the denier value of about 20 which are three-dimensionally intertwined with air-passing space among them, and a polyurethane binder binding the intersections of the fibers, such that said air-passing space is maintained, said middle layer consisting of middle synthetic cotton including first curled polyester fibers with the denier value of about 38 and second curled polyester fibers with the denier value of about 6 said first and second polyester fibers being mixed and three-dimensionally intertwined with air-passing space among them, and a polyurethane binder binding the intersections of the polyester fibers, such that said air-passing space is maintained, and said lower layer consisting of needle-punched lower synthetic cotton including first curled polyester fibers with the denier value of about 38 and second curled polyester fibers with the denier value of about 14, said first and second polyester fibers being mixed and three-dimensionally intertwined with air-passing spaces among them, and a polyurethane binder binding the intersections of the polyester fibers, such that said air-passing space is maintained.
Claim 17
Dependent Claim
16 words
The seat cushion according to claim 13, wherein the binder content ranges from 25% to 35%.
Claim 18
Dependent Claim
192 words
A seat cushion for use in a seat of an automobile, said cushion comprising an upper layer, a middle layer thicker than the upper layer, and a lower layer thinner than the middle layer, said upper layer consisting of upper synthetic cotton including curled polyester fibers with the denier value of about 6 which are three-dimensionally intertwined with air-passing space among them, and a polyurethane binder binding the intersections of the fibers, such that said air-passing space is maintained, said middle layer consisting of middle synthetic cotton including curled polyester fibers with the denier value of about 20 which are three-dimensionally intertwined with air-passing space among them, and a polyurethane binder binding the intersections of the fibers, such that said air-passing space is maintained, and said lower layer consisting of needle-punched lower synthetic cotton including first curled polyester fibers with the denier value of about 38 and second curled polyester fibers with the denier value of about 14, said first and second polyester fibers being mixed and three-dimensionally intertwined with air-passing spaces among them, and a polyurethane binder binding the intersections of the polyester fibers, such that said air-passing space is maintained.
Claim 19
Dependent Claim
192 words
A seat cushion for use in a seat of an automobile, said cushion comprising an upper layer, a middle layer thicker than the upper layer, and a lower layer thinner than the middle layer, said upper layer consisting of upper synthetic cotton including curled polyester fibers with the denier value of about 6 which are three-dimensionally intertwined with air-passing space among them, and a polyurethane binder binding the intersections of the fibers, such that said air-passing space is maintained, said middle layer consisting of middle synthetic cotton including curled polyester fibers with the denier value of about 20 which are three-dimensionally intertwined with air-passing space among them, and a polyurethane binder binding the intersections of the fibers, such that said air-passing space is maintained, and said lower layer consisting of needle-punched lower synthetic cotton including first curled polyester fibers with the denier value of about 38 and second curled polyester fibers with the denier value of about 14, said first and second polyester fibers being mixed and three-dimensionally intertwined with air-passing spaces among them, and a polyurethane binder binding the intersections of the polyester fibers, such that said air-passing space is maintained.
Claim 20
Dependent Claim
16 words
The seat cushion according to claim 15, wherein the binder content ranges from 25% to 35%.
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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) | 1993-07-30 | 1994-01-29 | 1994-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-30 | 1998-01-29 | 1998-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-30 | 2002-01-29 | 2002-07-31 | $7700.00 | Window Closed / Lapsed |