US3640786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pile fabric and method of making the same
Assignee: Hercules LLC
•
Filing: 1968-11-29
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Granted: 1972-02-08
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Expires: 1988-11-29
Abstract
Abstract This invention relates to a method of making pile fabrics wherein thermoplastic pole yarn is fusion-bonded to a thermoplastic backing by means of sonic energy, thereby effecting localized heating of the pile yarn and backing at the points of contact without loss of orientation in either the pile yarn or the backing, if an oriented backing is used, between the bond points.
Inventors
- 👤 Charles W Carpenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:32
CPC Classifications
D; D04; D04H; D04H11/00; D04H11/04; B; B29; B29C; B29C65/00; B29C65/02; B29C65/08; B29C65/083; B29C65/086; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/13; B29C66/131; B29C66/40; B29C66/47; B29C66/474; B29C66/69; B29C66/70; B29C66/71; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81411; B29C66/81413; B29C66/81415; B29C66/81417; B29C66/82; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; B29C66/02; B29C66/024; B29C66/0242; B29C66/72; B29C66/729; B29C66/731; B29C66/7311; B29C66/73115; B29C66/73116; B29C66/8145; B29C66/81463; B29C66/81467; B29C66/81469; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83415; B29L; B29L2031/00; B29L2031/732; B29L2031/7322; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/109; Y10T428/00; Y10T428/23907; Y10T428/23957; Y10T428/23964; Y10T428/23971
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
71 words
A method of making pile fabrics in accordance with claim 1 wherein the sonic device is deenergized with the pile yarns and backing member in engagement under pressure between the anvil member and the working face of the sonic device, and the engagement is maintained for a predetermined time interval to provide for cooling and setting the bond between the pile yarns and backing member before release of the pressure thereon.
Claim 2
Dependent Claim
36 words
A method of making pile fabrics in accordance with claim 1 wherein a predetermined length of each pile yarn is fed upon each loop-forming cycle for controlling the height of the loops in the pile yarn.
Claim 3
Dependent Claim
49 words
A method of making pile fabrics in accordance with claim 3 wherein guiding the pile yarns and forming the loops therein is provided by a bar having individual yarn tubes for each of the pile yarns through which the yarns are adapted to slide with a predetermined frictional drag.
Claim 4
Dependent Claim
43 words
A method of making pile fabrics in accordance with claim 1 wherein the backing member is arranged over belt means comprising a screen which serves to advance the backing member to the bonding line and as the anvil member at the bonding line.
Claim 5
Dependent Claim
77 words
A method of making pile fabrics in accordance with claim 1 wherein the sonic device is continuously energized with the pile yarns and backing member in engagement under pressure between the anvil member and the working face of the sonic device, and maintaining the engagement for a predetermined time interval to effect the fusion bonding of the pile yarns and backing member after which the engagement is discontinued and the steps for forming the pile fabric repeated.
Claim 6
Dependent Claim
27 words
A method of making pile fabrics in accordance with claim 1 wherein the oriented thermoplastic pile yarns are fusion-bonded to an elongated oriented thermoplastic sheetlike backing member.
References Cited (Backward Citations)
US2588130A
Cited
US2639250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |