US5001820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll for rolling mill
Assignee: IHI Corp
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Filing: 1990-06-27
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Granted: 1991-03-26
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Expires: 2010-06-27
Abstract
Abstract Axially extending liquid-tight tapered spaces are defined in the barrel of a roll body. Tapered pistons are fitted in the spaces for engagement and disengagement with a bore inner surface defining the tapered spaces. A liquid under pressure is supplied through liquid passages to some of liquid pressure chambers at opposite ends of the tapered pistons so that the barrel of the roll body is increased or decreased in diameter. When the rolling forces are removed from the roll body, the roll body returns to its initial straight state.
Inventors
- 👤 Masujiro Yoshida
- 👤 Masao Nitanda
- 👤 Heiji Kato
- 👤 Isao Imai
- 👤 Tsukasa Oyauchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:52
CPC Classifications
B; B21; B21B; B21B27/00; B21B27/02; B21B27/03; B21B27/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A roll for a rolling mill comprising a roll body having a barrel and bearing supports integral with said barrel, said bearing supports serving as supports for rotatably supporting the roll body with respect to an outer frame, said roll body being bored to provide liquid-tight, frustoconical tapered spaces at the axis of the roll body and axially extending in the barrel, axially movable, frustoconical tapered piston means selectively wedged and disengaged to and from a bore inner surface defining said tapered spaces, said tapered piston means being disposed in said spaces to thereby provide liquid-pressure chamber means at opposite ends of said tapered piston means and liquid passage means in communication with said liquid-pressure chamber means.
Claim 2
Dependent Claim
117 words
A roll for a rolling mill comprising a roll body having a barrel and bearing supports integral with said barrel, said bearing supports serving as supports for rotatably supporting the roll body with respect to an outer frame, said roll body being bored to provide liquid-tight, frustoconical tapered spaces at the axis of the roll body and axially extending in the barrel, axially movable, frustoconical tapered piston means selectively wedged and disengaged to and from a bore inner surface defining said tapered spaces, said tapered piston means being disposed in said spaces to thereby provide liquid-pressure chamber means at opposite ends of said tapered piston means and liquid passage means in communication with said liquid-pressure chamber means.
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) | 1994-03-25 | 1994-09-24 | 1995-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-25 | 1998-09-24 | 1999-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-25 | 2002-09-24 | 2003-03-26 | $7700.00 | Window Closed / Lapsed |