US3665743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring and control apparatus
Assignee: Josef Frohling GmbH
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Filing: 1969-09-19
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Granted: 1972-05-30
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Expires: 1989-09-19
Abstract
Abstract For controlling the processing of strip metal in for example a rolling mill, apparatus is provided ahead of the press to derive a signal in dependence on the thickness and hardness of the strip, this signal being used to control the rolling mill. The apparatus comprises two measuring heads which bear on the two sides of the strip with pressures sufficient to deform the material of the strip.
Inventors
- 👤 Josef Frohling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:13
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/40; G01N3/42; B; B21; B21B; B21B37/00; B21B37/16; B21B37/165; B21B38/00; B21B38/04; G01B; G01B7/00; G01B7/02; G01B7/06; G01B7/10; G01B7/107; B21B1/00; B21B1/22; B21B1/30; B21B1/32; B21B1/46; B21B1/463; B21B31/00; B21B31/16; B21B31/20; B21B31/22; B21B31/26; B21B45/00; G01N2203/00; G01N2203/0014; G01N2203/0016; G01N2203/0019
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
236 words
A measuring and working apparatus for moving strip material comprising: a strip working means for working said strip material; an adjusting means operatively connected to said strip working means to adjust the latter in accordance with strip characteristics; a measuring head assembly positioned upstream of said strip working means for regulating the adjustment of said strip working means in response to fluctuations in the thickness and hardness characteristics of the strip material, said measuring head assembly comprising: a pair of oppositely positioned measuring head means mounted to engage opposite surfaces of said strip material; said measuring head means being mounted for displacement in a direction generally perpendicular to the direction of movement of said strip material; pressure means for urging the measuring head means into engagement with said strip material with a force of a magnitude adequate to cause sufficient deformation of said strip material for sensing both thickness and hardness characteristics of said strip material; said urged measuring head means being movable in response to a change in counterpressure exerted by said strip material resulting from sensed thickness and hardness characteristics thereof; and control means operatively associated with said measuring head means and said adjusting means for operating said adjusting means in response to said displacement of said pressured measuring head means due to changes in said counterpressure produced by thickness fluctuations and hardness fluctuations of said strip material sensed by said measuring head means.
Claim 2
Dependent Claim
236 words
A measuring and working apparatus for moving strip material comprising: a strip working means for working said strip material; an adjusting means operatively connected to said strip working means to adjust the latter in accordance with strip characteristics; a measuring head assembly positioned upstream of said strip working means for regulating the adjustment of said strip working means in response to fluctuations in the thickness and hardness characteristics of the strip material, said measuring head assembly comprising: a pair of oppositely positioned measuring head means mounted to engage opposite surfaces of said strip material; said measuring head means being mounted for displacement in a direction generally perpendicular to the direction of movement of said strip material; pressure means for urging the measuring head means into engagement with said strip material with a force of a magnitude adequate to cause sufficient deformation of said strip material for sensing both thickness and hardness characteristics of said strip material; said urged measuring head means being movable in response to a change in counterpressure exerted by said strip material resulting from sensed thickness and hardness characteristics thereof; and control means operatively associated with said measuring head means and said adjusting means for operating said adjusting means in response to said displacement of said pressured measuring head means due to changes in said counterpressure produced by thickness fluctuations and hardness fluctuations of said strip material sensed by said measuring head means.
Claim 3
Dependent Claim
24 words
Apparatus according to claim 1 wherein the force exerted by said pressure means causes a deformation of said strip material within its elastic limit.
Claim 4
Dependent Claim
13 words
Apparatus according to claim 1 wherein said pressure means includes hydraulically operated means.
Claim 5
Dependent Claim
20 words
Apparatus according to claim 1 wherein each measuring head means includes a freely rotatable roller bearing against said strip material.
Claim 6
Dependent Claim
13 words
Apparatus according to claim 4 wherein the surfaces of said rollers are cambered.
Claim 7
Dependent Claim
94 words
Apparatus according to claim 1 wherein said control means comprises: a bar of magnetic material connected to each measuring head means for transmitting said displacement of each measuring head means; an induction coil surrounding each bar; said bars being operable to induce a current in a respective one of said coils during movement of said bars therethrough; the induction coils being interconnected for causing a subtraction of currents induced therein by movement of the bars in the same direction and an addition of currents induced therein by movement of the bars in opposite directions.
Claim 8
Dependent Claim
49 words
Apparatus according to claim 1, wherein said control means is operatively connected to said measuring head means and said adjusting means such that the time between the sensing of thickness and hardness fluctuations and the operation of said adjusting means is correlated to the speed of said strip material.
Claim 9
Dependent Claim
26 words
Apparatus according to claim 7 and further wherein said control means includes time delay means to compensate for fluctuations in the speed of the strip material.
Claim 10
Dependent Claim
29 words
Apparatus according to claim 1, wherein said strip working apparatus is reversible, and further wherein a measuring head assembly is positioned on each side of said strip working means.
Claim 11
Dependent Claim
14 words
Apparatus according to claim 1, wherein said strip working means comprises a rolling mill.
Claim 12
Dependent Claim
93 words
Apparatus according to claim 10, wherein said rolling mill includes at least one work roll; and further wherein said adjusting means includes: a backing roller engaging said work roll, said backing roller being mounted by an eccentric bearing having a toothed gear thereon; a toothed rack connected between a pair of hydraulic cylinders and drivingly engaging said toothed gear; and a valve connected between said control means and said hydraulic cylinders to direct fluid to one of said cylinders under the influence of said control means, to cause adjustment of said work roll.
Claim 13
Dependent Claim
34 words
Apparatus according to claim 10 wherein said rolling mill includes a pair oF oppositely spaced work rolls, and further wherein said adjusting means includes hydraulically operated backing means engaging each of said work rolls.
Claim 14
Dependent Claim
19 words
Apparatus according to claim 10, wherein said rolling mill comprises part of a casting, rolling, milling, and finishing apparatus.
Claim 15
Independent Claim
139 words
A method of measuring and working strip material comprising the steps of: passing said strip material between a pair of oppositely positioned, displaceable measuring head means; pressing each of said measuring head means against said sheet material with a force of a magnitude adequate to cause sufficient deformation of said strip material for sensing both thickness and hardness characteristics of said strip material; causing said measuring head means to be displaceable in response to a change in counterpressure exerted by said strip material resulting from sensed thickness and hardness fluctuations; detecting displacement of said measuring head means resulting from changes in said counterpressure produced by thickness fluctuations and hardness fluctuations in said strip material; and causing said detected displacement to operate an adjusting means of a strip-working means positioned downstream of said measuring heads to adjust said strip-working means.
Claim 16
Independent Claim
139 words
A method of measuring and working strip material comprising the steps of: passing said strip material between a pair of oppositely positioned, displaceable measuring head means; pressing each of said measuring head means against said sheet material with a force of a magnitude adequate to cause sufficient deformation of said strip material for sensing both thickness and hardness characteristics of said strip material; causing said measuring head means to be displaceable in response to a change in counterpressure exerted by said strip material resulting from sensed thickness and hardness fluctuations; detecting displacement of said measuring head means resulting from changes in said counterpressure produced by thickness fluctuations and hardness fluctuations in said strip material; and causing said detected displacement to operate an adjusting means of a strip-working means positioned downstream of said measuring heads to adjust said strip-working means.
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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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |