Patent US3587987A successfully refreshed from Google Patents.
US3587987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Segmented crusher liner
Assignee: Rexnord Inc
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Filing: 1969-03-07
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Granted: 1971-06-28
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Expires: 1989-03-07
Abstract
Abstract A CRUSHER OF THE GYRATED HEAD-TYPE HAVING A CRUSHING HEAD GYRATED BENEATH OR WITHIN A BOWL. THE MANTLE OF THE CRUSHING HEAD IS FORMED OF FACING PARTS OF A METAL HAVING A VERY HIGH RESISTANCE TO WEAR AND A BACKING OR SUPPORTING STRUCTURE HAVING LESS RESISTANCE TO WEAR BUT GREATER TENSILE STRENGTH AND ADEQUATE RESISTANCE TO FRACTURE.
Inventors
- 👤 Jerome C Motz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:34
CPC Classifications
B; B02; B02C; B02C2/00; B02C2/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |