US4070883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System and assembly for measuring the movement of strip and hot strip mill
Assignee: Voestalpine AG
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Filing: 1977-03-28
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Granted: 1978-01-31
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Expires: 1997-03-28
Abstract
Abstract A roller shell is rotatably mounted on a non-rotatable axle having an axial bore and is engageable with moving strip. A detector is non-rotatably mounted on said axle and comprises a magnet which produces a magnetic field and a sensing coil arranged to generate voltage signals in response to magnetic flux changes in said magnetic field. An annular rotor is disposed between said axle and said shell and non-rotatably connected to said shell and movable in said magnetic field to produce a predetermined magnetic flux change in said magnetic field in response to a predetermined angular movement of said shell. A lead is connected to said detector and extends in said axial bore and is arranged to transmit said voltage signals. In a hot strip mill, said axle is carried by pivoted arms tending to urge said shell against the underside of a strip contacting the top of said shell so as to support and tension said strip.
Inventors
- 👤 Helmut Kunz
- 👤 Roland Kofler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:33
CPC Classifications
B; B21; B21B; B21B38/00; G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481; G01P3/488; B21B1/00; B21B1/22; B21B1/24; B21B1/26; B21B41/00; B21B41/08; B21B41/10
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
129 words
An assembly for measuring the movement of strip, comprising a non-rotatable axle having an axial bore, a roller shell rotatably mounted on said axle and engageable with said strip, a detector non-rotatably mounted on said axle and comprising a magnet which produces a magnetic field and a sensing coil arranged to generate voltage signals in response to magnetic flux changes in said magnetic field, an annular rotor disposed between said axle and said shell and non-rotatably connected to said shell and movable in said magnetic field and adapted to produce a predetermined magnetic flux change in said magnetic field in response to a predetermined angular movement of said shell, and a lead connected to said detector and extending in said axial bore and arranged to transmit said voltage signals.
Claim 2
Dependent Claim
129 words
An assembly for measuring the movement of strip, comprising a non-rotatable axle having an axial bore, a roller shell rotatably mounted on said axle and engageable with said strip, a detector non-rotatably mounted on said axle and comprising a magnet which produces a magnetic field and a sensing coil arranged to generate voltage signals in response to magnetic flux changes in said magnetic field, an annular rotor disposed between said axle and said shell and non-rotatably connected to said shell and movable in said magnetic field and adapted to produce a predetermined magnetic flux change in said magnetic field in response to a predetermined angular movement of said shell, and a lead connected to said detector and extending in said axial bore and arranged to transmit said voltage signals.
Claim 3
Dependent Claim
24 words
An assembly as set forth in claim 1, in which said axle has a radial recess and said detector is mounted in said recess.
Claim 4
Dependent Claim
43 words
An assembly as set forth in claim 1, in which said rotor is formed with peripherally equally spaced teeth and said sensing coil is adapted to generate a voltage pulse in response to the movement of each of said teeth past said magnet.
Claim 5
Dependent Claim
24 words
An assembly as set forth in claim 1, in which said teeth have side faces which are inclined from the axis of said axle.
Claim 6
Dependent Claim
52 words
An assembly as set forth in claim 1, for measuring the movement of hot strip, in which said shell and axle define a space between them, means are provided to pass a cooling fluid through said space and said rotor and detector adjoin said space to be contacted by said cooling fluid.
Claim 7
Dependent Claim
46 words
An assembly as set forth in claim 5, in which said rotor is formed with peripherally equally spaced teeth which adjoin said space, said sensing coil is adapted to generate a voltage pulse in response to the movement of each of said teeth past said magnet.
Claim 8
Dependent Claim
24 words
An assembly as set forth in claim 6, in which said teeth have side faces which are inclined from the axis of said axle.
Claim 9
Dependent Claim
44 words
An assembly as set forth in claim 1, in which said axle is carried by pivoted arms tending to urge said roller shell against the underside of a strip contacting the top of said roller shell so as to support and tension said strip.
Claim 10
Dependent Claim
173 words
A hot strip mill comprising a rolling mill stand and at least one assembly for measuring the movement of strip as it is rolled in said mill, said assembly comprising an axle having an axial bore, a roller shell rotatably mounted on said axle, pivoted arms carrying said axle and tending to urge said roller shell against the underside of a strip contacting the top of said roller shell to support and tension said strip, a detector non-rotatably mounted on said axle and comprising a magnet which produces a magnetic field and a sensing coil arranged to generate voltage signals in response to magnetic flux changes in said magnetic field, an annular rotor disposed between said axle and said shell and non-rotatably connected to said shell and movable in said magnetic field to produce a predetermined magnetic flux change in said magnetic field in response to a predetermined angular movement of said shell, and a lead connected to said detector and extending in said axial bore and arranged to transmit said voltage signals.
Claim 11
Dependent Claim
173 words
A hot strip mill comprising a rolling mill stand and at least one assembly for measuring the movement of strip as it is rolled in said mill, said assembly comprising an axle having an axial bore, a roller shell rotatably mounted on said axle, pivoted arms carrying said axle and tending to urge said roller shell against the underside of a strip contacting the top of said roller shell to support and tension said strip, a detector non-rotatably mounted on said axle and comprising a magnet which produces a magnetic field and a sensing coil arranged to generate voltage signals in response to magnetic flux changes in said magnetic field, an annular rotor disposed between said axle and said shell and non-rotatably connected to said shell and movable in said magnetic field to produce a predetermined magnetic flux change in said magnetic field in response to a predetermined angular movement of said shell, and a lead connected to said detector and extending in said axial bore and arranged to transmit said voltage signals.
Claim 12
Dependent Claim
31 words
A hot strip mill as set forth in claim 8, which comprises two of said assemblies, which respectively precede and succeed said rolling mill stand in the path of said strip.
Claim 13
Dependent Claim
32 words
A hot strip mill as set forth in claim 1, in which at least two rolling mill stands are provided and said shell contacts said strip between said two rolling mill stands.
Claim 14
Independent Claim
147 words
A system for measuring the movement of strip, comprising an axle having an axial bore, a roller shell rotatably mounted on said axle and engageable with said strip, a detector non-rotatably mounted on said axle and comprising a magnet which produces a magnetic field and a sensing coil arranged to generate voltage signals in response to magnetic flux changes in said magnetic field, an annular rotor disposed between said axle and said shell and non-rotatably connected to said shell and movable in said magnetic field and adapted to produce a predetermined magnetic flux change in said magnetic field in response to a predetermined angular movement of said shell, a lead connected to said detector and extending in said axial bore and arranged to transmit said voltage signals, an integrator disposed outside said axle and shell and connected to said lead and adapted to integrate said voltage signals.
Claim 15
Independent Claim
147 words
A system for measuring the movement of strip, comprising an axle having an axial bore, a roller shell rotatably mounted on said axle and engageable with said strip, a detector non-rotatably mounted on said axle and comprising a magnet which produces a magnetic field and a sensing coil arranged to generate voltage signals in response to magnetic flux changes in said magnetic field, an annular rotor disposed between said axle and said shell and non-rotatably connected to said shell and movable in said magnetic field and adapted to produce a predetermined magnetic flux change in said magnetic field in response to a predetermined angular movement of said shell, a lead connected to said detector and extending in said axial bore and arranged to transmit said voltage signals, an integrator disposed outside said axle and shell and connected to said lead and adapted to integrate said voltage signals.
Claim 16
Dependent Claim
23 words
A system as set forth in claim 11, in which said integrator is adapted to indicate the surface velocity of said roller shell.
Claim 17
Dependent Claim
53 words
A system as set forth in claim 11, in which said rotor is formed with peripherally equally spaced teeth, said sensing coil is adapted to generate a voltage pulse in response to the movement of each of said teeth past said magnet, and said integrator comprises a counter adapted to count said pulses.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |