Patent US4592198A successfully refreshed from Google Patents.
US4592198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction control arrangement for an open-end friction spinning machine
Assignee: Individual
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Filing: 1985-09-23
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Granted: 1986-06-03
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Expires: 2005-09-23
Abstract
Abstract An open end friction spinning machine is provided which exhibits a plurality of adjacently arranged spinning units, each spinning unit including two adjacently arranged rollers forming a wedge-shaped gap. Yarn formation takes place inside the wedge-shaped gap with the assistance of a friction effect of the rollers. This friction effect is dependent on the one hand on the outer surface structure of the rollers and on the other hand on the strength of the suction effect of a suction device creating a suction air stream in the wedge-shaped gap. It is provided that the outer surface structure of the rollers is examined so that a portion of the friction effect dependent upon the outer surface of the rollers can be determined. In order to maintain the entire friction effect in a predetermined range, the suction effect of the suction device can be adjusted corresponding to the measured value of the friction effect due to the outer surface of the rollers.
Inventors
- 👤 Fritz Stahlecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:02
CPC Classifications
D; D01; D01H; D01H4/00; D01H4/04; D01H4/16
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
98 words
An open-end friction spinning machine having at least one spinning unit including drivable friction surface means defining a yarn formation zone, suction air stream means adjacent the yarn formation zone for creating a suction effect in the yarn formation zone, said suction effect and said friction surface effect being capable of creating an overall friction effect in said yarn formation zone, comprising: surface friction effect examining means for determining said surface friction effect of said friction surface means, said surface friction effect examining means being capable of determining said surface friction effect without altering said friction surface means.
Claim 2
Dependent Claim
98 words
An open-end friction spinning machine having at least one spinning unit including drivable friction surface means defining a yarn formation zone, suction air stream means adjacent the yarn formation zone for creating a suction effect in the yarn formation zone, said suction effect and said friction surface effect being capable of creating an overall friction effect in said yarn formation zone, comprising: surface friction effect examining means for determining said surface friction effect of said friction surface means, said surface friction effect examining means being capable of determining said surface friction effect without altering said friction surface means.
Claim 3
Dependent Claim
19 words
An open-end friction spinning machine according to claim 1, wherein said friction surface examining means comprises non-contact sensor means.
Claim 4
Dependent Claim
47 words
An open-end friction spinning machine according to claim 1, wherein said friction surface means comprises a pair of adjacently arranged friction rollers capable of being driven in the same rotational direction, and said yarn formation zone comprises a yarn-forming wedge-shaped gap formed between the pair of rollers.
Claim 5
Dependent Claim
18 words
An open-end friction spinning machine according to claim 2, wherein said non-contact sensor means comprises light sensing means.
Claim 6
Dependent Claim
40 words
An open-end friction spinning machine according to claim 1, comprising evaluation device means, said surface friction effect examining means being capable of generating signals corresponding to said surface friction effect, said evaluation device means being capable of receiving said signals.
Claim 7
Dependent Claim
28 words
An open-end friction spinning machine according to claim 1, comprising travelling maintenance device means, said surface friction effect examining means being disposed in said travelling maintenance device means.
Claim 8
Dependent Claim
26 words
An open-end friction spinning machine according to claim 5, comprising travelling maintenance device means, said evaluation device means being disposed in said travelling maintenance device means.
Claim 9
Dependent Claim
32 words
An open-end friction spinning machine according to claim 5, comprising travelling maintenance device means, said evaluation device means and said friction surface examining means being disposed in said travelling maintenance device means.
Claim 10
Dependent Claim
31 words
An open-end friction spinning machine according to claim 6, wherein said travelling maintenance device means includes adjusting means for adjusting said friction surface examining means relative to said friction surface means.
Claim 11
Dependent Claim
24 words
An open-end friction spinning machine according to claim 9, comprising friction surface drive control means for controlling the drive of said friction surface means.
Claim 12
Dependent Claim
40 words
An open-end friction spinning machine according to claim 5, comprising travelling maintenance device means, said maintenance device means including stopping means for stopping an examined spinning unit said stopping means being capable of being controlled by said evaluating device means.
Claim 13
Dependent Claim
40 words
An open-end friction spinning machine according to claim 5, comprising travelling maintenance device means, said maintenance device means including marking means for marking an examined spinning unit said marking means being capable of being controlled by said evaluating device means.
Claim 14
Dependent Claim
28 words
An open-end friction spinning machine according to claim 1, wherein said spinning unit includes suction effect adjusting means for adjusting the suction effect of the suction device means.
Claim 15
Dependent Claim
40 words
An open-end friction spinning machine according to claim 13, comprising travelling maintenance device means, said maintenance device means having controlling means for controlling said adjusting means, said controlling means being capable of controlling the suction effect at said spinning unit.
Claim 16
Dependent Claim
50 words
An open-end friction spinning machine according to claim 14, comprising evaluation device means, said surface friction effect examining means being capable of generating signals corresponding to said surface friction effect, said evaluation device means being capable of receiving said signals, said controlling means being responsive to said evaluation device means.
Claim 17
Dependent Claim
53 words
An open-end friction spinning machine according to claim 15, wherein said maintenance device means includes suction effect examining means for examining said suction effect, said suction effect examining means being capable of generating suction effect signals corresponding to said suction effect, said evaluation device means being capable of receiving said system effect signals.
Claim 18
Dependent Claim
15 words
An open-end friction spinning machine according to claim 1, comprising a plurality of spinning units.
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) | 1989-06-02 | 1989-12-02 | 1990-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-02 | 1993-12-02 | 1994-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-02 | 1997-12-02 | 1998-06-03 | $7700.00 | Window Closed / Lapsed |