Patent US3998041A successfully refreshed from Google Patents.
US3998041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
False twist device and method of producing a textured yarn or the like
Assignee: Maschinenfabrik Rieter AG
•
Filing: 1976-03-01
•
Granted: 1976-12-21
•
Expires: 1996-03-01
Abstract
Abstract A method of, and apparatus for, fabricating a textured yarn or the like comprising a false twist device containing a number of friction disks arranged in spaced coaxial relationship with respect to one another in succession and thread guide elements helically distributed along the circumference of the false twist device. The thread guide elements extend into the space between the disks and are helically arranged along the circumference of the false twist device in such a manner that a yarn contacting the disks and guided by the thread guide elements contacts the false twist device along a helix, the helix angle or pitch of which decreases in the direction of travel of the yarn.
Inventors
- 👤 Felix Graf
- 👤 Jakob Fluck
- 👤 Hans Schellenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:56
CPC Classifications
C; C04; C04B; C04B18/00; C04B18/04; C04B18/18; C04B18/24; C04B18/28; D; D02; D02G; D02G1/00; D02G1/02; D02G1/04; D02G1/08; D02G1/082; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
121 words
A method of manufacturing a textured thread comprising the steps of: a. providing a false twist device having a infeed side and an outfeed side and containing a plurality of friction disks coaxially arranged in sequence; b. guiding the thread into contact with the disks so as to contact each disk at an angle of less than 90° with respect to the circumferential direction of the associated friction disk; and c. the step of guiding the thread including guiding the thread into contact with the friction disks so that the thread contacts each friction disk at a decreasing angle with respect to the circumferential direction of the disks from the infeed side to the outfeed side of the false twist device.
Claim 2
Independent Claim
121 words
A method of manufacturing a textured thread comprising the steps of: a. providing a false twist device having a infeed side and an outfeed side and containing a plurality of friction disks coaxially arranged in sequence; b. guiding the thread into contact with the disks so as to contact each disk at an angle of less than 90° with respect to the circumferential direction of the associated friction disk; and c. the step of guiding the thread including guiding the thread into contact with the friction disks so that the thread contacts each friction disk at a decreasing angle with respect to the circumferential direction of the disks from the infeed side to the outfeed side of the false twist device.
Claim 3
Dependent Claim
109 words
A false twist device comprising a number of friction disks, means for coaxially arranging said friction disks in spaced relationship from one another to define between each two neighboring friction disks a space, thread guide elements arranged helically distributed along the circumference of the false twist device, said thread guide elements extending into the spaces between the friction disks along a helical configuration about the circumference of the false twist device in such a manner that a thread contacting the friction disk and guided by the thread guide elements contacts the false twist device along a helix, the helix angle of which decreases in the direction of thread transfer.
Claim 4
Dependent Claim
109 words
A false twist device comprising a number of friction disks, means for coaxially arranging said friction disks in spaced relationship from one another to define between each two neighboring friction disks a space, thread guide elements arranged helically distributed along the circumference of the false twist device, said thread guide elements extending into the spaces between the friction disks along a helical configuration about the circumference of the false twist device in such a manner that a thread contacting the friction disk and guided by the thread guide elements contacts the false twist device along a helix, the helix angle of which decreases in the direction of thread transfer.
Claim 5
Dependent Claim
38 words
The false twist device as defined in claim 2, including means for supporting the thread guide elements so as to be distributed along the circumference of the false twist device at increasing mutual distances in the circumferential direction.
Claim 6
Dependent Claim
19 words
The false twist device as defined in claim 2, further including means for pivotably mounting the thread guide elements.
Claim 7
Dependent Claim
22 words
The false twist device as defined in claim 2, further including means for permitting the thread guide elements to be collectively pivoted.
Claim 8
Dependent Claim
32 words
The false twist device as defined in claim 2, wherein the thread guide elements are arranged so as to form different angles of inclination extending into the spaces between the friction disks.
Claim 9
Dependent Claim
62 words
The false twist device as defined in claim 4, wherein the means for pivotably mounting the thread guide elements comprise a connecting member provided for each thread guide element, said connecting member being equipped with a shaft rotatably arranged and extending substantially parallel to the axis of the false twist device, each said connecting member being pivotably actuatable by the associated shaft.
Claim 10
Dependent Claim
38 words
The false twist device as defined in claim 7, further including means for conjointly pivoting the thread guide elements, said conjointly pivoting means embodying a transmitting element coupled with a common drive element for conjointly rotating the shafts.
Claim 11
Dependent Claim
38 words
The false twist device as defined in claim 2, wherein the thread guide elements are pivotable from an operating position where an individual thread guide element is arranged at a predetermined angle of inclination into an idling position.
Claim 12
Dependent Claim
44 words
The false twist device as defined in claim 7, wherein the thread guide elements are pivotable from an operating position into an idling position, and means for fixing the drive element in a position where the thread guide elements are in their operating position.
References Cited (Backward Citations)
FR1254093A
Cited
CH490534A
Cited
US3287890A
Cited
US3762149A
Cited
US3901011A
Cited
US3921379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-12-21 | 1980-06-21 | 1980-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-21 | 1984-06-21 | 1984-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-21 | 1988-06-21 | 1988-12-21 | $7700.00 | Window Closed / Lapsed |