Patent US3817068A successfully refreshed from Google Patents.
US3817068A
Expired / Lapsed
US
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Roll gap and gap error monitoring device
Assignee: Individual
•
Filing: 1973-05-10
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Granted: 1974-06-18
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Expires: 1993-05-10
Abstract
Abstract A controller for the width of the gap between a pair of rolls in a rolling mill, maintaining that gap constant at a predetermined level, uses two radially facing surfaces adjacent the ends of the rolls. The radial distance of one of the surfaces is adjustable as command value equivalent of desired gap width. The controller operates to maintain the distance between the surfaces constant independently from the level of adjustment of the one surface.
Inventors
- 👤 F Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:37
CPC Classifications
B; B21; B21B; B21B38/00; B21B38/10; G; G01; G01B; G01B5/00; G01B5/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
146 words
Apparatus for providing a control signal for a controller controlling the width of the gap between a pair of rolls in a rolling mill for maintaining that gap constant at a predetermined level, comprising first means defining a first radially facing Surface on one of the rolls, but axially displaced from the working surface of the one roll; second means defining a second, radially facing surface on the other one of the rolls, facing the first surface, and third means included in the second means for mechanically adjusting the radial distance of the second surface from the axis of the other roll within a range of levels, whereby one of the levels represents zero gap width; the controller operating to maintain the distance between the first and second surfaces constant independently from the level of adjustment of the second surface by operation of the third means.
Claim 2
Dependent Claim
146 words
Apparatus for providing a control signal for a controller controlling the width of the gap between a pair of rolls in a rolling mill for maintaining that gap constant at a predetermined level, comprising first means defining a first radially facing Surface on one of the rolls, but axially displaced from the working surface of the one roll; second means defining a second, radially facing surface on the other one of the rolls, facing the first surface, and third means included in the second means for mechanically adjusting the radial distance of the second surface from the axis of the other roll within a range of levels, whereby one of the levels represents zero gap width; the controller operating to maintain the distance between the first and second surfaces constant independently from the level of adjustment of the second surface by operation of the third means.
Claim 3
Dependent Claim
46 words
Apparatus as in claim 1, the second means including a carrier journalled on one shaft end of the other roll and carrying an adjustment pin having an axial face, facing radially with respect to the axis of the other roll and serving as the second surface.
Claim 4
Dependent Claim
17 words
Apparatus as in claim 2, the carrier being part of an annulus journalled on said shaft end.
Claim 5
Dependent Claim
17 words
Apparatus as in claim 2, the carrier being mounted on the stationary journal for the other roll.
Claim 6
Dependent Claim
19 words
Apparatus as in claim 1, the one roll provided with a cylindrical transducer surface serving as the first surface.
References Cited (Backward Citations)
GB827167A
Cited
US2684001A
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US3358485A
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US3389588A
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US3570288A
Cited
US3662576A
Cited
CH489287A
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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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |