US3967038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Untwisted synthetic resin string and apparatus for manufacturing the string
Assignee: KATAGI GOSEIKAGAKU KK
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Filing: 1974-10-22
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Granted: 1976-06-29
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Expires: 1994-10-22
Abstract
Abstract Untwisted synthetic resin string comprising two rolled portions each spiral in cross section and formed by inwardly rolling toward each other the opposite side edges of a strip of thermoplastic resin film stretched at least longitudinally thereof. The rolled portions extend longitudinally of the string in parallel with each other and are partially adhered together longitudinally thereof. Also disclosed are an apparatus for manufacturing the untwisted string from a strip of thermoplastic resin stretched at least longitudinally thereof and another apparatus for manufacturing an untwisted string having a single rolled portion from like resin strip.
Inventors
- 👤 Fusao Katagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:58
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/02; D02G3/06; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1008; Y10T156/101; Y10T156/1015; Y10T156/1051; Y10T428/00; Y10T428/24; Y10T428/2419; Y10T428/24215; Y10T428/24231; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2936; Y10T428/2973
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
90 words
An untwisted synthetic resin string, consisting essentially of a longitudinally stretched polyolefin resin film including two rolled portions, each spiral in cross section, formed by rolling the opposite side edges of the film toward each other, the rolled portions being parallel to each other in the longitudinal direction, wherein said rolled portions contact each other and only the outermost peripheral layers of the rolled portions which are in contact are thermally fused together, and the interior spirally rolled layers of each rolled portion are in loose contact with adjacent layers.
Claim 2
Dependent Claim
90 words
An untwisted synthetic resin string, consisting essentially of a longitudinally stretched polyolefin resin film including two rolled portions, each spiral in cross section, formed by rolling the opposite side edges of the film toward each other, the rolled portions being parallel to each other in the longitudinal direction, wherein said rolled portions contact each other and only the outermost peripheral layers of the rolled portions which are in contact are thermally fused together, and the interior spirally rolled layers of each rolled portion are in loose contact with adjacent layers.
Claim 3
Dependent Claim
18 words
An untwisted synthetic resin string as set forth in claim 1 wherein said polyolefin resin film is polyethylene.
Claim 4
Dependent Claim
18 words
An untwisted synthetic resin string as set forth in claim 1 wherein said polyolefin resin film is polypropylene.
References Cited (Backward Citations)
US1497189A
Cited
US2219115A
Cited
US2633893A
Cited
US3416991A
Cited
US3415710A
Cited
US3655500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |