Patent US3729918A successfully refreshed from Google Patents.
US3729918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bulky yarn and method of producing the same
Assignee: Chori Co Ltd
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Filing: 1971-02-03
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Granted: 1973-05-01
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Expires: 1991-02-03
Abstract
Abstract A bulky yarn comprising staples constituting a spun yarn and thermo-plastic synthetic filaments both of which are crimped and mixed uniformly in a loose and twisting state. The bulky yarn may be produced by feeding the spun yarn and the thermo-plastic synthetic filaments, and then crimping by passing them through processes of twisting-heat setting-releasing twist.
Inventors
- 👤 K Kawasaki
- 👤 T Ono
- 👤 K Takizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:55
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0286
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
44 words
A method of producing a bulky yarn comprising forming a blend of a spun yarn and thermo-plastic synthetic filaments and crimping said yarn and filaments by passing them through a process of twisting-heat setting-releasing the twist and thereby mixing said staples and filaments uniformly.
Claim 2
Dependent Claim
27 words
The bulky yarn as claimed in claim 1 wherein the denier of the filaments is from 15 to 40 percent of the denier of the spun yarn.
Claim 3
Dependent Claim
24 words
The bulky yarn as claimed in claim 3 wherein the denier of the filaments is 30 percent of the denier of the spun yarn.
Claim 4
Dependent Claim
30 words
The method as claimed in claim 2 wherein the spun yarn and the filaments are blended and fed to the twisting-heat setting-releasing the twist process by the same feed rollers.
Claim 5
Dependent Claim
27 words
The method as claimed in claim 2 wherein the spun yarn and the filaments are fed to the twisting-heat setting-releasing the twist process by different feed rollers.
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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |