US3787943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller for hot and cold rolling and method of making the same
Assignee: Fagersta AB
•
Filing: 1971-12-21
•
Granted: 1974-01-29
•
Expires: 1991-12-21
Abstract
Abstract A roller for hot and cold rolling is made by taking a hard metal ring, the cross-section of which decreases radially outwardly, and casting around the inside and at least the inner part of the radial sides thereof an annular hub of ferro alloy. After casting, the hub and the hard metal ring are cooled, the hub shrinking more than the hard metal ring so as to exert compressive forces thereagainst to hold the same in place.
Inventors
- 👤 K Loqvist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:24
CPC Classifications
B; B21; B21B; B21B27/00; B21B27/02; B21B27/03; B21B27/035; B23; B23P; B23P17/00; C; C11; C11D; C11D9/00; C11D9/04; C11D9/22; C11D9/26
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
20 words
A roller according to claim 1, in which the side surfaces of the ring have radially extending grooves formed therein.
Claim 2
Dependent Claim
14 words
A roller according to claim 1, including a supporting material located in said cleft.
Claim 3
Dependent Claim
16 words
A roller according to claim 1, including cooling flanges formed on the exterior of the hub.
References Cited (Backward Citations)
US1413436A
Cited
US2342159A
Cited
US3432902A
Cited
US3667096A
Cited
US3435499A
Cited
US3609849A
Cited
US3577619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |