Patent US4082598A successfully refreshed from Google Patents.
US4082598A
Expired / Lapsed
US
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Apparatus for manufacturing an untwisted synthetic resin string
Assignee: Katagi Goseikaguaku KK
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Filing: 1976-04-20
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Granted: 1978-04-04
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Expires: 1996-04-20
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
2026-11-04 11:32
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: 5
Claim 1
Independent Claim
204 words
An apparatus for manufacturing an untwisted synthetic resin string comprising a stretching means for stretching a strip of thermoplastic resin film at least longitudinally thereof, a roll-forming means disposed to the rear of the stretching means for inwardly rolling only one side edge of the stretched film strip, and a heat-setting means disposed to the rear of the roll-forming means, the roll-forming means including a plurality of rolling members each having a curved rolling surface only at one end thereof and a flange at the other end thereof to prevent lateral displacement of the film strip, the rolling members being arranged side by side transversely of the direction of advance of the film strip and spaced apart by specified distances along the direction in such arrangement that the rolling surfaces are reduced in the radius of curvature thereof and positioned closer to the centerline of travel of the film strip toward the direction of advance of the film strip, the heat-setting means being so arranged that only the free edge of the untwisted rolled strip sent out from the roll-forming means and having a spiral cross section is thermally adhered to its outer layer, permitting the interior of the rolled strip to remain loose.
Claim 2
Independent Claim
204 words
An apparatus for manufacturing an untwisted synthetic resin string comprising a stretching means for stretching a strip of thermoplastic resin film at least longitudinally thereof, a roll-forming means disposed to the rear of the stretching means for inwardly rolling only one side edge of the stretched film strip, and a heat-setting means disposed to the rear of the roll-forming means, the roll-forming means including a plurality of rolling members each having a curved rolling surface only at one end thereof and a flange at the other end thereof to prevent lateral displacement of the film strip, the rolling members being arranged side by side transversely of the direction of advance of the film strip and spaced apart by specified distances along the direction in such arrangement that the rolling surfaces are reduced in the radius of curvature thereof and positioned closer to the centerline of travel of the film strip toward the direction of advance of the film strip, the heat-setting means being so arranged that only the free edge of the untwisted rolled strip sent out from the roll-forming means and having a spiral cross section is thermally adhered to its outer layer, permitting the interior of the rolled strip to remain loose.
Claim 3
Dependent Claim
32 words
The apparatus as set forth in claim 1 wherein a bundling means is provided in the path of travel of the rolled film strip between the roll-forming means and the heat-setting means.
Claim 4
Dependent Claim
30 words
An apparatus as defined in claim 1 wherein the rolling members are each in the form of a roll and driven in the direction of advance of the film strip.
Claim 5
Dependent Claim
27 words
An apparatus as defined in claim 1 wherein the heat-setting means comprises a pair of gears, and at least one of the gears incorporates heating means therein.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-03 | 1981-10-03 | 1982-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-03 | 1985-10-03 | 1986-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-03 | 1989-10-03 | 1990-04-04 | $7700.00 | Window Closed / Lapsed |