US4370853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction false twisting apparatus
Assignee: Oerlikon Barmag AG
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Filing: 1981-09-28
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Granted: 1983-02-01
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Expires: 2001-09-28
Abstract
Abstract A yarn false twisting apparatus is disclosed which comprises a pair of circular discs which are mounted for rotation about generally parallel spaced apart axes, and such that portions of the surfaces are disposed in opposing face to face relation and define a twisting zone therebetween. One disc is mounted to its supporting shaft by means of an elastomeric body member, which permits the disc to resiliently incline with respect to the axis of the shaft. A pressure applying member acts upon the back side of such disc to resiliently bias the same toward the other disc at the twisting zone.
Inventors
- 👤 Karl Bauer
- 👤 Heinz Schippers
- 👤 Peter Dammann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:42
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/04; D02G1/08; D02G1/087
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
164 words
A yarn false twisting apparatus comprising a pair of twist imparting members, with each member including a yarn engaging friction surface, and at least one of said members comprising a circular disc, means rotatably mounting said twist imparting members such that portions of the respective yarn engaging friction surfaces are disposed in opposing, face to face relationship and define a twisting zone therebetween, said mounting means for said circular disc including a supporting shaft and an elastomeric body member interposed between said circular disc and said shaft so as to permit said disc to resiliently incline with respect to the axis of said shaft, drive means for operatively rotating each of said twist imparting members about their respective axes, and means for resiliently biasing said circular disc toward the other member only at said twisting zone, whereby a yarn may be continuously moved through said twisting zone while having twist imparted thereto by frictional contact between the yarn and the respective opposed friction surfaces.
Claim 2
Dependent Claim
164 words
A yarn false twisting apparatus comprising a pair of twist imparting members, with each member including a yarn engaging friction surface, and at least one of said members comprising a circular disc, means rotatably mounting said twist imparting members such that portions of the respective yarn engaging friction surfaces are disposed in opposing, face to face relationship and define a twisting zone therebetween, said mounting means for said circular disc including a supporting shaft and an elastomeric body member interposed between said circular disc and said shaft so as to permit said disc to resiliently incline with respect to the axis of said shaft, drive means for operatively rotating each of said twist imparting members about their respective axes, and means for resiliently biasing said circular disc toward the other member only at said twisting zone, whereby a yarn may be continuously moved through said twisting zone while having twist imparted thereto by frictional contact between the yarn and the respective opposed friction surfaces.
Claim 3
Dependent Claim
53 words
The yarn false twisting apparatus as defined in claim 1 wherein said elastomeric body member has a generally circular periphery which is coaxial with the axis of said supporting shaft, and said disc is relatively rigid and includes an inner circular rim which is fixedly mounted to said periphery of said elastomeric body.
Claim 4
Dependent Claim
48 words
The yarn false twisting apparatus as defined in either claim 1 or 2 wherein said biasing means comprises a pressure applying member mounted adjacent said circular disc so as to operatively contact said disc on the side opposite said friction surface and in alignment with said twisting zone.
Claim 5
Dependent Claim
23 words
The yarn false twisting apparatus as defined in claim 3 wherein each of said twist imparting members comprises a relatively rigid circular disc.
References Cited (Backward Citations)
US2863280A
Cited
US3156084A
Cited
US3225533A
Cited
US3373554A
Cited
US3394540A
Cited
US3488941A
Cited
US3495391A
Cited
DE2001120A1
Cited
GB1375380A
Cited
FR2121917A5
Cited
GB1421662A
Cited
US4050229A
Cited
US4149366A
Cited
US4145871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-31 | 1986-08-02 | 1987-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-31 | 1990-08-02 | 1991-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-31 | 1994-08-02 | 1995-02-01 | $7700.00 | Window Closed / Lapsed |