US4184646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn winding apparatus
Assignee: EIDP Inc
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Filing: 1979-01-04
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Granted: 1980-01-22
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Expires: 1999-01-04
Abstract
Abstract An electropneumatic system to control yarn tension in a yarn winding apparatus in which an electrical resistance strain transducer is associated with the yarn line being wound for generating a signal indicative of tension. This signal regulates a motor driven valve which controls pneumatic pressure used to regulate the winding apparatus. A heat responsive negative feedback control is coupled into the system shunting the electrical resistance strain gauge to provide an anticipating signal to minimize overshoot in the control system.
Inventors
- 👤 John S. Seney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:12
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/02; B65H54/40; B65H54/52; B65H59/00; B65H59/38; B65H59/40; B65H2553/00; B65H2553/20; B65H2553/21; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A yarn winding apparatus comprising: a drive roll in surface driven engagement with a yarn package onto which a running yarn line is wound under tension; an electrical resistance strain gauge transducer for measuring tension in the yarn line and generating a voltage proportional thereto; an electropneumatic control system responsive to said voltage for regulating the force between said drive roll and said yarn package; a heat responsive negative feedback voltage generating resistance bridge circuit connected to said electrical resistance strain gauge transducer to shunt the output thereof; and means for heating a portion of said negative feedback bridge circuit to change the resistance thereof.
Claim 2
Dependent Claim
105 words
A yarn winding apparatus comprising: a drive roll in surface driven engagement with a yarn package onto which a running yarn line is wound under tension; an electrical resistance strain gauge transducer for measuring tension in the yarn line and generating a voltage proportional thereto; an electropneumatic control system responsive to said voltage for regulating the force between said drive roll and said yarn package; a heat responsive negative feedback voltage generating resistance bridge circuit connected to said electrical resistance strain gauge transducer to shunt the output thereof; and means for heating a portion of said negative feedback bridge circuit to change the resistance thereof.
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) | 1983-01-21 | 1983-07-23 | 1984-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-21 | 1987-07-23 | 1988-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-21 | 1991-07-23 | 1992-01-22 | $7700.00 | Window Closed / Lapsed |