US3956783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mattress
Assignee: Phillips Petroleum Co
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Filing: 1974-10-21
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Granted: 1976-05-18
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Expires: 1994-10-21
Abstract
Abstract A mattress is formed of a core element and a covering. The covering comprises a nonwoven fabric which is formed by needle punching batts of thermoplastic staple. One side of the needle punched batt is heated to fuse the surface.
Inventors
- 👤 Frederick L. Stoller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:39
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; A; A47; A47C; A47C27/00; A47C27/002; A47C31/00; A47C31/007; B32B5/02; B32B5/022; D; D04; D04H; D04H5/00; D04H5/02; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2262/0276; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/2395; Y10T428/24; Y10T428/24628; Y10T428/24636; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T442/00; Y10T442/60; Y10T442/682
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
101 words
A mattress comprising a core element and a covering, said covering having a weight of about 2 to 6 ounces per square yard and comprising a nonwoven fabric formed by needle punching a batt of a plurality of crosslapped layers of polypropylene staple deposited on a plurality of spaced polyester warp threads, said needle punching being accomplished by forcing a plurality of needles into the side of the batt opposite the side deposited on the warp threads, and heating the side of the resulting needle punched material opposite the side that the needles entered in order to fuse the surface thereof.
Claim 2
Dependent Claim
101 words
A mattress comprising a core element and a covering, said covering having a weight of about 2 to 6 ounces per square yard and comprising a nonwoven fabric formed by needle punching a batt of a plurality of crosslapped layers of polypropylene staple deposited on a plurality of spaced polyester warp threads, said needle punching being accomplished by forcing a plurality of needles into the side of the batt opposite the side deposited on the warp threads, and heating the side of the resulting needle punched material opposite the side that the needles entered in order to fuse the surface thereof.
Claim 3
Dependent Claim
25 words
The mattress of claim 1 wherein the side of the material that is heated constitutes the inner surface of the covering on said core element.
Claim 4
Dependent Claim
28 words
The mattress of claim 1 wherein the side of the material that is heated is printed and constitutes the outer surface of the covering on said core element.
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) | 1979-05-18 | 1979-11-17 | 1980-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-18 | 1983-11-17 | 1984-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-18 | 1987-11-17 | 1988-05-18 | $7700.00 | Window Closed / Lapsed |