Patent US3902233A successfully refreshed from Google Patents.
US3902233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll assembly
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1974-04-19
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Granted: 1975-09-02
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Expires: 1994-04-19
Abstract
Abstract In a roll assembly comprising a roll body and a ring made of hard material mounted securely on the barrel surface of said roll body by suitable tightening means, at least one of the lateral surfaces of the hard ring is formed in an outer-conical surface to which a clamp ring having a corresponding inner-conical surface is abutted thereon. The inside diameter of the clamp ring is substantially greater than the outside diameter of the roll body at the corresponding portion. The roll ring is pre-tightened by said suitable means together with the clamp ring which is preheated to a suitable temperature. The thermal contraction after cooling elicits principal tightening force.
Inventors
- 👤 Yaswo Ohtsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:22
CPC Classifications
B; B21; B21B; B21B27/00; B21B27/02; B21B27/03; B21B27/035
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
204 words
A roll assembly comprising in combination: A. a roll body having an abutting means; B. a hard ring securely fitted around the outer peripheral surface of said roll body in such a manner that one end face of the hard ring is abutted against said abutting means, the other end face of said hard ring being a conical surface diverging toward said abutting means; C. a clamp ring provided on the outer peripheral surface of said roll body adjacent said haRd ring, the right having a conical surface corresponding to said conical surface of said hard ring, the inner diameter of the clamp ring being substantially greater than the diameter of said outer peripheral surface of said roll body over which it is positioned; and D. tightening means pressing said clamp ring and said hard ring toward said abutting means so as to tighten said rings between said tightening means and abutting means; E. said assembly being assembled in such a manner that, first, said clamp ring positioned between said tightening means and hard ring is heated so that the diameter and axial length thereof is increased and, then, while heated further pressed axially toward said hard ring by means of said tightening means.
Claim 2
Dependent Claim
204 words
A roll assembly comprising in combination: A. a roll body having an abutting means; B. a hard ring securely fitted around the outer peripheral surface of said roll body in such a manner that one end face of the hard ring is abutted against said abutting means, the other end face of said hard ring being a conical surface diverging toward said abutting means; C. a clamp ring provided on the outer peripheral surface of said roll body adjacent said haRd ring, the right having a conical surface corresponding to said conical surface of said hard ring, the inner diameter of the clamp ring being substantially greater than the diameter of said outer peripheral surface of said roll body over which it is positioned; and D. tightening means pressing said clamp ring and said hard ring toward said abutting means so as to tighten said rings between said tightening means and abutting means; E. said assembly being assembled in such a manner that, first, said clamp ring positioned between said tightening means and hard ring is heated so that the diameter and axial length thereof is increased and, then, while heated further pressed axially toward said hard ring by means of said tightening means.
Claim 3
Dependent Claim
21 words
The roll assembly according to claim 1, wherein said abutting means is formed as a flange integral with said roll body.
Claim 4
Dependent Claim
44 words
The roll assembly according to claim 2, wherein said flange has a conical surface engaging with a corresponding conical surface defined on said one end face of said hard ring, said corresponding conical surface diverging toward said other end face of said hard ring.
Claim 5
Dependent Claim
122 words
The roll assembly according to claim 1, wherein said abutting means consist of a second tightening means and a second clamp ring having a conical surface engaging with a corresponding conical surface provided on said one end face of said hard ring diverging toward said other end of the same and said assembly is assembled in such a manner that first and second clamp rings positioned between said first tightening means and hard ring and said second tightening means and hard ring, respectively, are heated so that the diameter and axial length thereof are increased and, then, are tightened between said hard ring and first tightening means, and said hard ring and second tightening means, respectively, by means of said tightening means.
Claim 6
Dependent Claim
22 words
The roller assembly according to claim 4, wherein said second tightening means is formed as a flange integral with said roll body.
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) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |