Patent US3607503A successfully refreshed from Google Patents.
US3607503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a needled heat-shrinkable tufted pile fabric
Assignee: Bigelow Sanford Inc
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Filing: 1969-08-14
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Granted: 1971-09-21
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Expires: 1989-08-14
Abstract
Abstract A process for the manufacture of tufted pile fabric in which the pile yarns are tufted on a backing comprising primarily needled heat-shrinkable synthetic thermoplastic fibers with the fibers of at least one surface bonded together, fibers in the interior of the backing remaining unbonded, and the fabric after tufting is subjected to a widthwise heat shrinkage treatment with the dimensions of the fabric controlled both widthwise and lengthwise of the fabric, and at a controlled temperature.
Inventors
- 👤 David B Parlin
- 👤 Ronald V Canova
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:32
CPC Classifications
D; D05; D05C; D05C17/00; D05C17/02; D04; D04H; D04H1/00; D04H1/04; D04H1/06; D06; D06C; D06C7/00; D06C7/02; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23986
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
31 words
The method of claim 1 wherein a major proportion of said thermoplastic fibers are polypropylene fibers and the temperature of said heating zone is maintained within the range 315* -320* F.
Claim 2
Dependent Claim
23 words
The method of claim 1 wherein said backing fabric includes longitudinally extending polyester yarns bonded to the surface fibers which are bonded together.
Claim 3
Dependent Claim
34 words
The method of claim 1 wherein the side edges of said fabric are engaged and constrained to remain at a constant distance apart during the final portion of their travel within the heating zone.
Claim 4
Dependent Claim
13 words
The method of claim 1 wherein said heating zone contains a heated atmosphere.
Claim 5
Dependent Claim
16 words
The method of claim 1 wherein said fibers are disposed predominantly transversely of said backing fabric.
Claim 6
Dependent Claim
21 words
The method of claim 1 wherein the exposed fibers located at the other exterior surface of said web are bonded together.
Claim 7
Dependent Claim
23 words
The method of claim 2 wherein said backing fabric includes longitudinally extending polyester yarns bonded to the surface fibers which are bonded together.
Claim 8
Dependent Claim
34 words
The method of claim 8 wherein the side edges of said fabric are engaged and constrained to remain at a constant distance apart during the final portion of their travel within the heating zone.
Claim 9
Dependent Claim
13 words
The method of claim 9 wherein said heating zone contains a heated atmosphere.
Claim 10
Dependent Claim
33 words
The method of claim 10 wherein said fibers are disposed predominantly transversely of said backing fabric and wherein the exposed fibers located at the other exterior surface of said web are bonded together.
Claim 11
Dependent Claim
34 words
The method of claim 2 wherein the side edges of said fabric are engaged and constrained to remain at a constant distance apart during the final portion of their travel within the heating zone.
Claim 12
Dependent Claim
13 words
The method of claim 12 wherein said heating zone contains a heated atmosphere.
Claim 13
Dependent Claim
13 words
The method of claim 2 wherein said heating zone contains a heated atmosphere.
Claim 14
Dependent Claim
13 words
The method of claim 4 wherein said heating zone contains a heated atmosphere.
Claim 15
Dependent Claim
13 words
The method of claim 8 wherein said heating zone contains a heated atmosphere.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |