US3862723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Winding apparatus for elongated flexible material
Assignee: Balfour Beatty PLC
•
Filing: 1973-07-12
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Granted: 1975-01-28
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Expires: 1993-07-12
Abstract
Abstract An electrical device for generating a voltage proportional to the linear velocity of wire being wound on to or from a coil wound on a drum comprises means for deriving a voltage signal representing the angular velocity of the drum, a detector capable of directly measuring the radius of the coil, and coupling means through which the voltagederiving means is coupled to and can be actuated by the radius detector in such a way that a voltage signal representing the linear velocity of the wire can be produced. Preferably the device includes a tacho-generator, driven by the drum, having its output connected across a potentiometer, the adjusting arm of which is actuated by the radius detector.
Inventors
- 👤 Zbigniew Bonikowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:09
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/005; B65H59/00; B65H59/38
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
96 words
An electrical device for generating a voltage proportional to the linear velocity of wire being wound on to or from a coil wound on a drum comprising a tacho-generator driven by the drum; a potentiometer having an adjusting arm, the output of the tachogenerator being connected across the potentiometer; a detector capable of directly measuring the radius of the coil of wire; and coupling means through which the adjusting arm of the potentiometer is coupled to and can be actuated by the radius detector to produce a voltage signal representing the linear speed of the wire.
Claim 2
Dependent Claim
96 words
An electrical device for generating a voltage proportional to the linear velocity of wire being wound on to or from a coil wound on a drum comprising a tacho-generator driven by the drum; a potentiometer having an adjusting arm, the output of the tachogenerator being connected across the potentiometer; a detector capable of directly measuring the radius of the coil of wire; and coupling means through which the adjusting arm of the potentiometer is coupled to and can be actuated by the radius detector to produce a voltage signal representing the linear speed of the wire.
Claim 3
Dependent Claim
47 words
An electrical device as claimed in claim 1, wherein the radius detector comprises a mechanical feeler and coupling means by which the feeler is mechanically coupled to the adjusting arm of the potentiometer and wherein damping means is provided to damp out minor fluctuations of the potentiometer.
Claim 4
Dependent Claim
78 words
An electrical device as claimed in claim 2, wherein the potentiometer is a rotary potentiometer, the mechanical feeler comprises a pivoted feeler arm, spring means by which the arm is spring-biased towards the coil and a feeler roller mounted on one end of the arm, and wherein said damping means comprises a spring coupling the feeler arm to the adjusting arm of the rotary potentiometer and a hydraulic dash-pot coupled to the adjusting arm of the rotary potentiometer.
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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) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |