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Patent US4145871A successfully refreshed from Google Patents.
US4145871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
False twisting apparatus
Assignee: Shibaura Machine Co Ltd
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Filing: 1978-01-18
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Granted: 1979-03-27
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Expires: 1998-01-18
Abstract
Abstract False twisting apparatus including opposing rotary discs between which a yarn is clamped is provided with a device for supporting the rotary discs to be movable in the axial direction toward and away from each other and is also provided with a member for urging the rotary discs to form a small gap therebetween.
Inventors
- 👤 Kotei Iwata
- 👤 Yoshiaki Tada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:54
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/04; D02G1/08; D02G1/087
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
66 words
In apparatus for carrying out false twisting of a yarn of the type comprising a pair of opposing rotary discs between which the yarn is clamped to be false twisted, the improvement which comprises means for supporting said rotary discs to be relatively movable towards and away from each other, and spring means for urging said rotary discs to face each other with a predetermined gap.
Claim 2
Dependent Claim
66 words
In apparatus for carrying out false twisting of a yarn of the type comprising a pair of opposing rotary discs between which the yarn is clamped to be false twisted, the improvement which comprises means for supporting said rotary discs to be relatively movable towards and away from each other, and spring means for urging said rotary discs to face each other with a predetermined gap.
Claim 3
Dependent Claim
80 words
In an apparatus for carrying out false twisting of a yarn of the type comprising a pair of opposing rotary discs between which the yarn is clamped to be false twisted, the improvement which comprises means for supporting said rotary discs to be relatively movable towards and away from each other, and means for urging said rotary discs to face each other with a predetermined gap, said means for urging said rotary discs comprises the weight of the discs themselves.
Claim 4
Dependent Claim
80 words
In an apparatus for carrying out false twisting of a yarn of the type comprising a pair of opposing rotary discs between which the yarn is clamped to be false twisted, the improvement which comprises means for supporting said rotary discs to be relatively movable towards and away from each other, and means for urging said rotary discs to face each other with a predetermined gap, said means for urging said rotary discs comprises the weight of the discs themselves.
Claim 5
Dependent Claim
27 words
The apparatus according to claim 1 or 2 which further comprises stop members for limiting the gap between the yarn contacting portions of said rotary discs, respectively.
Claim 6
Dependent Claim
17 words
The apparatus according to claim 3 wherein stop members means for limiting the gap is an electromagnet.
Claim 7
Dependent Claim
25 words
The apparatus according to claim 3 wherein said stop members for limiting the gap comprises means for applying pneumatic pressure to one of said discs.
Claim 8
Dependent Claim
34 words
The apparatus according to claim 3 wherein stop members means for limiting the gap is an eccentric cam actuated by a servo-motor for changing the inclination of said means for supporting the rotary discs.
References Cited (Backward Citations)
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Cited
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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) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |