US3885378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
False twisting apparatus
Assignee: IHO Holding GmbH and Co KG
•
Filing: 1974-04-12
•
Granted: 1975-05-27
•
Expires: 1994-04-12
Abstract
Abstract Apparatus for false-twisting a thread by means of friction elements, comprising three rotatably mounted spindles, each provided with at least one rotationally symmetrical friction element, the spindles lying at the corners of an equilateral triangle in plan view, so that the thread passes between the friction elements in a zigzag path. The spindles can be locked or simultaneously adjusted while maintaining their triangular relationship and relative positions with relation to the path of the thread.
Inventors
- 👤 Friedrich Schuster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:09
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/04; D02G1/08; D02G1/082
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
140 words
Apparatus for false-twisting threads by means of friction elements, comprising: three spindles disposed to form the corners of an equilateral triangle in plan view; means for rotatably mounting said spindles; at least one rotationally symmetrical friction element on each spindle; means for guiding thread in a path of travel past said friction elements; said rotationally symmetrical friction elements mutually overlapping to cause thread in said path of travel to follow a zig-zag path; means for simultaneously adjusting the position of said spindles with respect to both said path of travel of said thread and the distance between said corners of said equilateral triangle; and means to move said mutually overlapping spindles to thereby move said friction elements into and out of mutually overlapping relationship to facilitate threading of the apparatus when said friction elements are out of mutually overlapping relationship.
Claim 2
Dependent Claim
140 words
Apparatus for false-twisting threads by means of friction elements, comprising: three spindles disposed to form the corners of an equilateral triangle in plan view; means for rotatably mounting said spindles; at least one rotationally symmetrical friction element on each spindle; means for guiding thread in a path of travel past said friction elements; said rotationally symmetrical friction elements mutually overlapping to cause thread in said path of travel to follow a zig-zag path; means for simultaneously adjusting the position of said spindles with respect to both said path of travel of said thread and the distance between said corners of said equilateral triangle; and means to move said mutually overlapping spindles to thereby move said friction elements into and out of mutually overlapping relationship to facilitate threading of the apparatus when said friction elements are out of mutually overlapping relationship.
Claim 3
Dependent Claim
66 words
The apparatus for false-twisting threads according to claim 1, wherein said means for moving said spindles into and out of a mutually overlapping relationship comprises: cam means; means to urge said sprindles to operative coaction with said cam means; and actuating means to position said cam means to move said spindles and therEby to move said friction elements into and out of said mutually overlapping relationship.
Claim 4
Dependent Claim
61 words
The apparatus for false-twisting threads according to claim 2 wherein: said means for guiding thread comprise a tubular section disposed on said path of travel of said thread and adapted for the passage of thread therethrough; said cam means are disposed on said tubular section; and said actuating means to position said cam means comprise means to rotate said cam means.
Claim 5
Dependent Claim
26 words
The apparatus for false-twisting threads according to claim 3, wherein said cam means comprise a plurality of cam surfaces adapted to simultaneously position said three spindles.
Claim 6
Dependent Claim
26 words
The apparatus for false-twisting threads according to claim 4, wherein said cam means is symmetrical with relation to a radially central line through said cam means.
Claim 7
Dependent Claim
69 words
The apparatus for false-twisting threads according to claim 4, wherein said cam means comprise: a cam surface for each of said spindles; each of said cam surfaces has at its radially outermost point a recess to operatively coact with said spindles to provide an open position; and a recess is positioned between each of said adjacent cam surfaces to operatively coact with said spindle to produce a closed position.
Claim 8
Dependent Claim
25 words
The apparatus for false-twisting threads according to claim 4 wherein said cam means comprise radially outwardly directed stop means to coact with said spindle means.
Claim 9
Dependent Claim
61 words
The apparatus for false-twisting threads according to claim 4 wherein said means for simultaneously adjusting the position of said spindles comprise: a variable surface associated with said means for guiding thread; means to urge said spindles against said variable surface; and means to change relative position of said spindles and said variable surface to thereby change the distance between said spindles.
Claim 10
Dependent Claim
70 words
The apparatus for false-twisting threads according to claim 8 wherein said means to change the relative position of said spindles and said variable surface comprise: means to dispose said variable surface concentrically with said means to guide thread and to allow movement of said variable surface with respect to said means to guide thread; and means to fix the position of said variable surface to said means to guide thread.
Claim 11
Dependent Claim
30 words
The apparatus for false-twisting threads according to claim 9 further comprising thread means to concentrically dispose said variable surface with said means to guide thread and to allow movement therebetween.
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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |