US3551978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary end mill cutter
Assignee: Fansteel Inc
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Filing: 1968-10-31
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Granted: 1971-01-05
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Expires: 1988-10-31
Abstract
Abstract A ROTARY END MILL CUTTER UTILIZING REPLACEABLE CUTTING INSERTS POSITIONED AT A POSITVE AXIAL RAKE ANGLE AND CONSTRUCTED IN A WAY TO ACHIEVE A STRAIGHT WALL CONFIGURATION IN A MILLED SLOT IN MUCH THE SAME MANNER AS AN END MILL HAVING ZERO AXIAL RAKE INSERTS, THIS BEING ACCOMPLISHED BY A NOVEL SHAPED CUTTING EDGE ON THE INDEXABLE INSERTS.
Inventors
- 👤 Robert W Berry Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:49
CPC Classifications
B; B23; B23C; B23C5/00; B23C5/16; B23C5/20; B23C5/22; B23C5/2295; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1908; Y10T407/191; Y10T407/192; Y10T407/1924; Y10T407/1942; Y10T407/1944; Y10T407/1952; Y10T407/1962; Y10T407/1964; Y10T407/23
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |