US3938930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion shim for hot briquette roll segments
Assignee: United States Steel Corp
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Filing: 1973-10-26
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Granted: 1976-02-17
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Expires: 1993-10-26
Abstract
Abstract A shim designed for insertion between mold segments on hot briquette rolls permits accurate alignment of the segments and at the same time, by virtue of its softening and melting temperatures permits uniform expansion of the segments on heating.
Inventors
- 👤 William L. Lauterbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:18
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/16; B30B11/165; Y; Y10; Y10S; Y10S425/00; Y10S425/03
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
60 words
A shim for use in hot briquette machines having peripheral mold segments on mold rolls comprising a sheet of alloy having a melting point no higher than the temperature at which the mold segments achieve their greatest expansion under operating conditions, said sheet having a profile similar to the profile of a mold segment of said hot roll briquette machine.
Claim 2
Dependent Claim
60 words
A shim for use in hot briquette machines having peripheral mold segments on mold rolls comprising a sheet of alloy having a melting point no higher than the temperature at which the mold segments achieve their greatest expansion under operating conditions, said sheet having a profile similar to the profile of a mold segment of said hot roll briquette machine.
Claim 3
Dependent Claim
14 words
The shim of claim 1 having a melting point between about 550°F and 700°F.
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) | 1979-02-16 | 1979-08-18 | 1980-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-16 | 1983-08-18 | 1984-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-16 | 1987-08-18 | 1988-02-17 | $7700.00 | Window Closed / Lapsed |