US3791119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices for unwinding filamentary material from a bobbin or sp ool
Assignee: Individual
•
Filing: 1972-04-25
•
Granted: 1974-02-12
•
Expires: 1992-04-25
Abstract
Abstract This invention relates to devices for unwinding filamentary material from a bobbin or spool. The bobbin or spool has at least one cheek and a rotatable capping flange surrounds this cheek: a tube is located at the centre of the bobbin or spool and has a flared end, and means are provided for rotating the central tube and the capping flange together. As a result of the apparatus, the filamentary material may be taken off the bobbin or spool, be passed over the flared end of the central tube and along the latter and out of its other end.
Inventors
- 👤 J Godderidge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:15
CPC Classifications
B; B65; B65H; B65H57/00; B65H57/12; B65H57/18; B65H57/20; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
162 words
A device for unwinding filamentary material from a fixed nonrotating bobbin or spool in the reverse direction to that in which it was wound on, said bobbin or spool having at least one cheek, said device comprising a fixed hub supporting said bobbin or spool, a hollow shaft mounted for rotation in said hub, a rotatable capping flange surrounding the periphery of said cheek, a central tube located at the central axis of said bobbin or spool and mounted for axial movement in said hollow shaft, resilient means biassing said central tube outwardly of said hollow shaft, said central tube having a flared end, and means for rotating said central tube and said capping flange together, the arrangement being such that the filamentary material is wound off said bobbin or spool and passes over said flared end of said central tube into said central tube and along the interior of said central tube and out the other end of said central tube.
Claim 2
Independent Claim
162 words
A device for unwinding filamentary material from a fixed nonrotating bobbin or spool in the reverse direction to that in which it was wound on, said bobbin or spool having at least one cheek, said device comprising a fixed hub supporting said bobbin or spool, a hollow shaft mounted for rotation in said hub, a rotatable capping flange surrounding the periphery of said cheek, a central tube located at the central axis of said bobbin or spool and mounted for axial movement in said hollow shaft, resilient means biassing said central tube outwardly of said hollow shaft, said central tube having a flared end, and means for rotating said central tube and said capping flange together, the arrangement being such that the filamentary material is wound off said bobbin or spool and passes over said flared end of said central tube into said central tube and along the interior of said central tube and out the other end of said central tube.
Claim 3
Dependent Claim
28 words
The invention of claim 1 additionally including interengaging means between said central tube and said hollow shaft for effecting rotation of said central tube by said hollow shaft.
Claim 4
Dependent Claim
34 words
The invention of claim 1 additionally including an anti-billowing cylinder enclosing said bobbin or spool and said capping flange for preventing the outward billowing of filamentary material being unwound from the bobbin or spool.
Claim 5
Dependent Claim
24 words
The invention of claim 3 additionally including flexible fingers mounted on the anti-billowing cylinder and having ends engaging the periphery of said capping flange.
References Cited (Backward Citations)
DE852066C
Cited
US3096610A
Cited
US3165882A
Cited
US3202380A
Cited
US3321150A
Cited
US3295305A
Cited
US3410071A
Cited
US3400530A
Cited
US3490221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |