Patent US4566642A successfully refreshed from Google Patents.
US4566642A
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US
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Method and apparatus for monitoring chuck overspeed
Assignee: RIETER MACHINE WORKS Ltd A SWISS CORP
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Filing: 1984-12-07
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Granted: 1986-01-28
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Expires: 2004-12-07
Abstract
Abstract A winder is provided for winding synthetic filament into packages formed on a rotatable chuck which is directly driven by a drive motor. The speed of the drive motor, as represented by a suitable signal, is compared with a limit therefore, as represented by a second signal. The limit speed is reduced during formation of a package as an inverse function of the package diameter.
Inventors
- 👤 Hans-Jorg Sommer
- 👤 Hansruedi Lamparter
- 👤 Maurizio Wermelinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:50
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/38; B65H59/384; B65H59/385; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
93 words
A method of detecting an overspeed in winding of thread by a chuck-driven winder, comprising the steps of: producing a first signal which is representative of an instantaneous chuck rotation speed; producing a second signal which is representative of an instantaneous limit rotational speed for the chuck and which is a function of package diameter; comparing said first and said second signals; and producing a third signal indicating an overspeed condition if the instantaneous chuck rotation speed represented by the first signal exceeds the instantaneous limit rotational speed represented by the second signa1.
Claim 2
Independent Claim
93 words
A method of detecting an overspeed in winding of thread by a chuck-driven winder, comprising the steps of: producing a first signal which is representative of an instantaneous chuck rotation speed; producing a second signal which is representative of an instantaneous limit rotational speed for the chuck and which is a function of package diameter; comparing said first and said second signals; and producing a third signal indicating an overspeed condition if the instantaneous chuck rotation speed represented by the first signal exceeds the instantaneous limit rotational speed represented by the second signa1.
Claim 3
Dependent Claim
36 words
The method as defined in claim 1, further including the steps of: controlling the chuck rotation speed by reference to an adjustable speed setting; and adapting said second signal to correspond with said adjustable speed setting.
Claim 4
Dependent Claim
34 words
The method as defined in claim 1, further including the step of: controlling the actual chuck rotation speed by reference to a speed setting; and said second signal being independent of said speed setting.
Claim 5
Dependent Claim
77 words
The method as defined in claim 2, wherein: said first signal is a time-varying signal; a frequency of said first signal being a predetermined function of the actual chuck rotation speed; said second signal being another time-varying signal; a frequency of said second signal being a predetermined function of the speed setting and of the package diameter; and an overspeed signal being produced when said frequency of the first signal exceeds said frequency of the second signal.
Claim 6
Dependent Claim
103 words
A winding machine, comprising: at least one chuck; means for driving said at least one chuck into rotation about its own longitudinal axis; means for producing a first signal representative of a rotational speed of the at least one chuck; means for producing a second signal representative of a limit value for said rotational speed of the at least one chuck; said means for producing said second signal being such that an output signal thereof varies as a function of the diameter of a package of thread building on the at least one chuck; and means for comparing said first and second signals.
Claim 7
Dependent Claim
103 words
A winding machine, comprising: at least one chuck; means for driving said at least one chuck into rotation about its own longitudinal axis; means for producing a first signal representative of a rotational speed of the at least one chuck; means for producing a second signal representative of a limit value for said rotational speed of the at least one chuck; said means for producing said second signal being such that an output signal thereof varies as a function of the diameter of a package of thread building on the at least one chuck; and means for comparing said first and second signals.
Claim 8
Dependent Claim
48 words
The winding machine as defined in claim 5, wherein: said means for producing said first signal representative of said rotational speed of said at least one chuck comprises a tacho-signal generator; and part of said tacho-signal generator being coupled to the at least one chuck for rotation therewith.
Claim 9
Dependent Claim
56 words
The winding machine as defined in claim 5, further including: a support frame; a part which moves relative to said support frame in dependence of a build-up of said package; and means responsive to movements of said part relative to the support frame for causing said second signal to vary as a function of package diameter.
Claim 10
Dependent Claim
60 words
The winding machine as defined in claim 5, further comprising: control means for controlling said means for driving said chuck; setting means for setting a predetermined take-up speed for use as a reference value by said control means; and said means for producing said second signal being adapted to vary said second signal in dependence upon said predetermined take-up speed.
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) | 1989-01-27 | 1989-07-29 | 1990-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-27 | 1993-07-29 | 1994-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-27 | 1997-07-29 | 1998-01-28 | $7700.00 | Window Closed / Lapsed |