US3899831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate length measuring gage
Assignee: United States Steel Corp
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Filing: 1973-09-12
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Granted: 1975-08-19
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Expires: 1993-09-12
Abstract
Abstract A length measuring gage for a steel plate mill has a pulse generator connected to a work roll for providing pulses which are representative of length increments of the circumference of the roll. The pulses are counted in an accumulator which is gated to count when roll separating force load cells indicate usable product is being rolled. A variable ratio gear box connected between the work roll and the pulse generator permits calibration of the pulse generator to provide an accumulator total directly in inches for a particular measured work roll circumference.
Inventors
- 👤 Walter L Deleon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:05
CPC Classifications
B; B21; B21C; B21C51/00; B21B; B21B38/00; G; G01; G01B; G01B7/00; G01B7/02; G01B7/04; G01B7/042
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
202 words
In a rolling mill, a pair of opposed work rolls, means for measuring the force separating said work rolls when a workpiece is displaced therebetween, and a gage for measuring usable lengths of a workpiece as it passes between the work rolls comprising, means connected to a work roll for providing pulses representative of increments of length of the circumference of the work roll as the work roll rotates, means connected to said means for providing pulses for counting said pulses, a voltage sensitive relay and signal source connected to the means for measuring the force separating said rolls and the means for counting the pulses for supplying a signal to said means for counting the pulses whenever the means for measuring the force separating said rolls indicates that the workpiece is entirely between said rolls, and a potentiometer connected to said means for counting pulses and said voltage sensitive relay and signal source whereby when the force of the rolls upon the workpiece causes the means for measuring the force separating the work rolls to measure an increase in force to a value determined by a setting of said potentiometer said signal source is connected to said means for counting pulses.
Claim 2
Dependent Claim
202 words
In a rolling mill, a pair of opposed work rolls, means for measuring the force separating said work rolls when a workpiece is displaced therebetween, and a gage for measuring usable lengths of a workpiece as it passes between the work rolls comprising, means connected to a work roll for providing pulses representative of increments of length of the circumference of the work roll as the work roll rotates, means connected to said means for providing pulses for counting said pulses, a voltage sensitive relay and signal source connected to the means for measuring the force separating said rolls and the means for counting the pulses for supplying a signal to said means for counting the pulses whenever the means for measuring the force separating said rolls indicates that the workpiece is entirely between said rolls, and a potentiometer connected to said means for counting pulses and said voltage sensitive relay and signal source whereby when the force of the rolls upon the workpiece causes the means for measuring the force separating the work rolls to measure an increase in force to a value determined by a setting of said potentiometer said signal source is connected to said means for counting pulses.
Claim 3
Dependent Claim
121 words
A gage according to claim 5 in which the means for providing pulses includes aa variable ratio gear box connected to said work roll, a first pulse generator connected to said variable ratio gear box for providing a pulse for each revolution of said work roll, a second pulse generator connected to said variable ratio gear box and to said means for counting pulses and means connecting said first pulse generator to said means for counting pUlses whereby the gear box ratio may be varied to provide a number of pulses from the second pulse generator representative of the number of increments of measured lengths of the circumference of the work roll for each pulse generated by the first pulse generator.
References Cited (Backward Citations)
US2659154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |