Patent US3777995A successfully refreshed from Google Patents.
US3777995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thread winding device
Assignee: Societa Italiana Resine SpA SIR
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Filing: 1971-07-01
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Granted: 1973-12-11
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Expires: 1991-07-01
Abstract
Abstract In apparatus for the winding of continuous thread, the tension of the thread is maintained constant during winding by an arrangement adapted to regulate the contact force between the roller and the reel, such regulation taking place as a function of the diameter of the reel while it is being wound.
Inventors
- 👤 E Funaioli
- 👤 P Landini
- 👤 G Marella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:54
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/02; B65H54/40; B65H54/52; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
229 words
An apparatus for the winding of continuous thread comprising: a friction roller rotatable at constant speed about a fixed axis; a reel, upon which the thread is to be wound, rotatable by contact with said friction roller; an arm carrying the reel at one end thereof, the other end of said arm being pivoted so as to allow the reel to be moved away from the friction roller gradually as the amount of thread wound onto the reel increases; cam means rotatably mounted on Said arm intermediate the end thereof; flexible means disposed about and secured at one end to said cam means, counter balancing means secured to the other end of said flexible means for applying a counter balancing force to said pivoted arm in opposition to the weight of said arm and said reel; and means for varying the counter balancing force to vary the contact force between said reel and said roller; said means for varying the counter balancing force comprising a wheel coaxial with and connected to said cam means for rotayion therewith about the axis thereof, a stationary circular segment coaxial with the pivot axis of said arm and means connected between said wheel and said segment for rotating said wheel through an angular displacement of considerably greater amplitude than the corresponding angular displacement of the reel holding arm about the pivot axis thereof.
Claim 2
Independent Claim
229 words
An apparatus for the winding of continuous thread comprising: a friction roller rotatable at constant speed about a fixed axis; a reel, upon which the thread is to be wound, rotatable by contact with said friction roller; an arm carrying the reel at one end thereof, the other end of said arm being pivoted so as to allow the reel to be moved away from the friction roller gradually as the amount of thread wound onto the reel increases; cam means rotatably mounted on Said arm intermediate the end thereof; flexible means disposed about and secured at one end to said cam means, counter balancing means secured to the other end of said flexible means for applying a counter balancing force to said pivoted arm in opposition to the weight of said arm and said reel; and means for varying the counter balancing force to vary the contact force between said reel and said roller; said means for varying the counter balancing force comprising a wheel coaxial with and connected to said cam means for rotayion therewith about the axis thereof, a stationary circular segment coaxial with the pivot axis of said arm and means connected between said wheel and said segment for rotating said wheel through an angular displacement of considerably greater amplitude than the corresponding angular displacement of the reel holding arm about the pivot axis thereof.
References Cited (Backward Citations)
CA675487A
Cited
FR770474A
Cited
US2150951A
Cited
GB817763A
Cited
GB1138335A
Cited
US3363850A
Cited
US3430875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |