Patent US3936997A successfully refreshed from Google Patents.
US3936997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for taking up the thread in textile machines
Assignee: F LLI MARZOLI AND C SpA
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Filing: 1974-08-08
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Granted: 1976-02-10
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Expires: 1994-08-08
Abstract
Abstract The invention relates to a device for taking up the thread in textile machines in which the tow or yarn travels from the drawing system to the wind-up unit through a closed conduit, either at the start of the spinning or after a breakage of the thread, comprising a bell shaped member, connected at its base to an aspiration unit through a flexible tube, and an electrically conductive spring lodged in the bell member so as to protrude beyond the mouth thereof, the spring being electrically connected to the aspiration unit, so that the aspiration action is started upon the spring contacting metallic parts, like the outlet of the thread to be fed to the drawing system.
Inventors
- 👤 Angelo Marzoli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:39
CPC Classifications
D; D01; D01H; D01H15/00; D01H15/007; B; B65; B65H; B65H51/00; B65H51/16; D01H1/00; D01H1/04; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
93 words
A thread taking-up device for textile machines comprising a drawing system, a wind-up unit and a conduit for transferring the thread from the drawing system to the wind-up unit, said device comprising a bell of electrically insulated material, a flexible tube connecting the bell to an aspiration unit, an electrically conductive spring housed within said bell and protruding outwardly therefrom and an electrical control for the aspiration unit, said control being electrically connected to said spring for starting operation of the aspiration unit when the spring is brought into contact with metallic means.
Claim 2
Dependent Claim
93 words
A thread taking-up device for textile machines comprising a drawing system, a wind-up unit and a conduit for transferring the thread from the drawing system to the wind-up unit, said device comprising a bell of electrically insulated material, a flexible tube connecting the bell to an aspiration unit, an electrically conductive spring housed within said bell and protruding outwardly therefrom and an electrical control for the aspiration unit, said control being electrically connected to said spring for starting operation of the aspiration unit when the spring is brought into contact with metallic means.
Claim 3
Dependent Claim
38 words
A thread taking-up device according to claim 1, wherein said bell has a tubular extension for connection thereof to said flexible tube, said tubular extension having an internal cross-section smaller than the internal cross-section of said flexible tube.
Claim 4
Dependent Claim
38 words
A thread taking-up device according to claim 1, including a textile machine having an auxiliary aspiration and cleaning unit, said first-mentioned aspiration unit of said thread taking-up device being formed by said auxiliary unit of the textile machine.
References Cited (Backward Citations)
US2819579A
Cited
GB1172368A
Cited
US3328946A
Cited
US3482387A
Cited
US3511041A
Cited
US3868813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |