US4336683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism for the production of a wrapped yarn
Assignee: Schubert und Salzer GmbH
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Filing: 1980-01-21
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Granted: 1982-06-29
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Expires: 2000-01-21
Abstract
Abstract A mechanism for the production of wrapped yarn which consists of a bundle of spun fibers wrapped around a binding thread. A hollow spindle 5 is supported between a pair of delivery rolls 1, 2 and a pair of draw-off rolls 3, 4. A rotating binding thread bobbin 7 is arranged coaxially with the hollow spindle 5 and is enclosed by a housing 8. An air flow which can be generated in the housing and/or introduced into the housing causes the pressure within the housing to be built up so as to prevent fibers and the like from entering an exit hole carried in a cover 80 provided on the housing.
Inventors
- 👤 Erich Bock
- 👤 Burkhard Wulfhorst
- 👤 Eugen Hini
- 👤 Bernhard Grupp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:41
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/38; D02G3/385
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
190 words
A mechanism for the production of a wrapped yarn which consists of a bundle of spun fibers wrapped round by a binding thread, having a hollow spindle supported between a pair of delivery rolls and a pair of draw-off rolls, a rotating binding-thread bobbin arranged coaxial with the hollow spindle and a housing surrounding the binding-thread bobbin, said binding-thread bobbin having a radially extending flange adjacent a lower end thereof, said mechanism comprising: means for stationarily supporting said housing relative to said rotating binding-thread bobbin; a cover (80) closing said housing and having a hole (81) lying concentric with said hollow spindle (5); an airflow (P 2 ) being fed into said housing (8) building the pressure in the region of said hole (81) to a level at least equal to the outside pressure surrounding said hole (81); and at least one inlet air opening (85) through which said air flow (P 2 ) is fed which extends inside the housing (8) and lies with its mouth near to said bobbin flange (71) adjacent a lower end of said bobbin (70) remote from the cover (80) of the housing (8).
Claim 2
Dependent Claim
190 words
A mechanism for the production of a wrapped yarn which consists of a bundle of spun fibers wrapped round by a binding thread, having a hollow spindle supported between a pair of delivery rolls and a pair of draw-off rolls, a rotating binding-thread bobbin arranged coaxial with the hollow spindle and a housing surrounding the binding-thread bobbin, said binding-thread bobbin having a radially extending flange adjacent a lower end thereof, said mechanism comprising: means for stationarily supporting said housing relative to said rotating binding-thread bobbin; a cover (80) closing said housing and having a hole (81) lying concentric with said hollow spindle (5); an airflow (P 2 ) being fed into said housing (8) building the pressure in the region of said hole (81) to a level at least equal to the outside pressure surrounding said hole (81); and at least one inlet air opening (85) through which said air flow (P 2 ) is fed which extends inside the housing (8) and lies with its mouth near to said bobbin flange (71) adjacent a lower end of said bobbin (70) remote from the cover (80) of the housing (8).
Claim 3
Dependent Claim
29 words
The mechanism as set forth in claim 1 further comprising: means carried on an inner surface of said cover inside said housing (8) for breaking up an air vortex.
Claim 4
Dependent Claim
34 words
The mechanism as set forth above in claim 1 further comprising: said cover (800) having a double head with air passages (89) in the head (89') which lie next to said binding-thread bobbin (7).
Claim 5
Dependent Claim
32 words
The mechanism as set forth in claim 1 further comprising a fanblade (6) is carried by said flange bobbin for rotating therewith and being positioned adjacent to said air inlet opening (85).
Claim 6
Dependent Claim
24 words
The mechanism as set forth in claim 1 further comprising a compressed air pipe (9) for feeding said air flow to said housing (8).
Claim 7
Dependent Claim
34 words
The mechanism as set forth in claim 1 further comprising: said hollow spindle (5) projecting above said cover (80) and the hole (81) drilled in the cover (80) for the passageway for the binding-thread.
Claim 8
Dependent Claim
26 words
The mechanism as set forth in claim 1 above further comprising: a small protective tube (86) surrounding said threaded hole (81) provided in said cover (80).
Claim 9
Dependent Claim
19 words
The mechanism as set forth above in claim 1 further comprising said cover being rotatably supported on said housing.
References Cited (Backward Citations)
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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) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |