Patent US3845613A successfully refreshed from Google Patents.
US3845613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
False-twist device
Assignee: Heberlein and Co AG
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Filing: 1973-04-04
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Granted: 1974-11-05
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Expires: 1993-04-04
Abstract
Abstract False-twist device for textile yarns has circular discs arranged on parallel shafts, four such shafts being provided, opposite shafts having at the same level discs formed with configurations extending at any angle relative to the discs surfaces and with profiles of pairs of discs at the same level in mutual engagement.
Inventors
- 👤 G Knebel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:33
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/04; D02G1/08; D02G1/082
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
98 words
False-twist device for textile yarn with circular discs arranged on parallel rotatable shafts, characterized in that four such shafts (6,7,8,9) are provided the axes of which are at the corners of an imaginary square, and in that on the shafts (6,8; 7,9) situated diagonally opposite each other, the discs (19,20,23,24; 21,22,25,26) are arranged on the same level, the disc rims being provided with configurations (27) extending at an ascending angle Alpha with respect to the disc surfaces and with profiles (40,40''; 41,41''; 42,42'') and that the disc rim profiles of discs arranged on the same level are complimentary.
Claim 2
Dependent Claim
98 words
False-twist device for textile yarn with circular discs arranged on parallel rotatable shafts, characterized in that four such shafts (6,7,8,9) are provided the axes of which are at the corners of an imaginary square, and in that on the shafts (6,8; 7,9) situated diagonally opposite each other, the discs (19,20,23,24; 21,22,25,26) are arranged on the same level, the disc rims being provided with configurations (27) extending at an ascending angle Alpha with respect to the disc surfaces and with profiles (40,40''; 41,41''; 42,42'') and that the disc rim profiles of discs arranged on the same level are complimentary.
Claim 3
Dependent Claim
26 words
Device according to claim 1, characterized in that the discs are arranged on the rotatable shafts in immediate proximity to one another consistent with unimpeded rotation.
Claim 4
Dependent Claim
23 words
Device according to claim 2, characterized in that the axial disc distances are adjustable by means of exchangeable spacers of different axial lengths.
Claim 5
Dependent Claim
32 words
Device according to claim 1, characterized in that the ascending angle Alpha of the grooves or projections increases by between 1* and 3* for each subsequent disc in direction of yarn movement.
Claim 6
Dependent Claim
28 words
Device according to claim 1, characterized in that the ascending angle Alpha of the grooves or projections (27) is of the order of 30* + or - 5*.
Claim 7
Dependent Claim
16 words
Device according to claim 1, characterized in that the discs consist of metal oxide ceramic material.
Claim 8
Dependent Claim
25 words
Device according to claim 1, characterized in that the discs consist of aluminum and are provided at least on the rims with an oxide coating.
Claim 9
Dependent Claim
36 words
Device according to claim 1, characterized by two carriers (3,4) each supporting a pair of adjacent shafts (6,7; 8,9), at least one of said carriers being arranged to pivot relatively to the other of said carriers.
Claim 10
Dependent Claim
24 words
Device according to claim 8, characterized in that said one carrier is pivotable about the axis of one of the shafts supported by it.
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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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |