US3955022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antistatic tufted carpet
Assignee: Conagra Brands Inc
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Filing: 1972-10-16
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Granted: 1976-05-04
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Expires: 1992-10-16
Abstract
Abstract The invention provides a primary carpet backing having a thickness of less than 2 mm. measured at a pressure of 240 g./cm.2 comprising a 2 to 6 oz./yd.2 woven or bonded nonwoven sheet of continuous filaments or ribbons of polypropylene having needled thereto a 1 to 6 oz./yd.2 layer of a blend of staple fiber containing from about 0.5 to 30% by weight of synthetic organic polymeric fiber containing conductive carbon and having a specific resistance of less than 1 x 104 ohm. cm.
Inventors
- 👤 Seymour Sands
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:27
CPC Classifications
D; D05; D05C; D05C17/00; D05C17/02; B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B5/02; B32B5/022; B32B5/024; D06; D06M; D06M11/00; D06M11/73; D06M11/74; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2262/12; B32B2307/00; B32B2307/40; B32B2307/402; B32B2307/4026; B32B2471/00; B32B2471/02; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23979; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
83 words
A primary carpet backing having a thickness of less than 2 mm. measured at a pressure of 240 g./cm. 2 and comprising a 2 to 6 oz./yd. 2 woven or bonded nonwoven sheet of continuous filaments or ribbons of polypropylene and having needled thereto a 1 to 6 oz./yd. 2 layer of a staple fiber blend containing from about 0.5 to 30% by weight of conductive carbon-containing synthetic organic fiber having a specific resistance of less than 1 × 10 4 ohm. cm.
Claim 2
Dependent Claim
83 words
A primary carpet backing having a thickness of less than 2 mm. measured at a pressure of 240 g./cm. 2 and comprising a 2 to 6 oz./yd. 2 woven or bonded nonwoven sheet of continuous filaments or ribbons of polypropylene and having needled thereto a 1 to 6 oz./yd. 2 layer of a staple fiber blend containing from about 0.5 to 30% by weight of conductive carbon-containing synthetic organic fiber having a specific resistance of less than 1 × 10 4 ohm. cm.
Claim 3
Dependent Claim
16 words
The composite of claim 1 wherein the conductive fiber is polypropylene fiber containing conductive carbon black.
Claim 4
Dependent Claim
15 words
The composite of claim 1 wherein the conductive fiber is 6-nylon containing conductive carbon black.
Claim 5
Dependent Claim
97 words
Tufted carpet having low static propensity, comprising a backing composite having a thickness of less than 2 mm. measured at a pressure of 240 g./cm. 2 and comprising a 2 to 6 oz./yd. 2 woven or bonded nonwoven sheet of continuous filaments or ribbons of polypropylene and having needled thereto a 1 to 6 oz./yd. 2 layer of a staple fiber blend containing from about 0.5 to 30% by weight of conductive carbon-containing synthetic organic fiber having a specific resistance of less than 1 × 10 4 ohm. cm. and pile yarn tufted through the backing composite.
Claim 6
Dependent Claim
97 words
Tufted carpet having low static propensity, comprising a backing composite having a thickness of less than 2 mm. measured at a pressure of 240 g./cm. 2 and comprising a 2 to 6 oz./yd. 2 woven or bonded nonwoven sheet of continuous filaments or ribbons of polypropylene and having needled thereto a 1 to 6 oz./yd. 2 layer of a staple fiber blend containing from about 0.5 to 30% by weight of conductive carbon-containing synthetic organic fiber having a specific resistance of less than 1 × 10 4 ohm. cm. and pile yarn tufted through the backing composite.
Claim 7
Dependent Claim
10 words
The carpet of claim 4 wherein the pile is cut.
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) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |