US3621740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turning machine
Assignee: Teledyne Inc
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Filing: 1970-02-19
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Granted: 1971-11-23
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Expires: 1990-02-19
Abstract
Abstract THE PRESENT INVENTION RELATES TO AN IMPROVED CENTERLESS TURNING MACHINE IN WHICH A BAR IS TIGHTLY GRIPPED IN A ROTATING CHUCK AND IS SUPPORTED NEAR THE FREE END OF THE BAR, NEAR THE SHAPING TOOL, BY MEANS OF A SLIP CHUCK WHICH ALLOWS THE BAR TO BE TURNED OR ROTATED THEREIN. NOVEL FEATURES OF THIS INVENTION ARE AUTOMATIC REGULATION OF THE CLAMPING FORCE OF THE SLIP CHUCK, MEANS FOR BREAKING AND DIRECTING CHIPS FROM THE BAR, AND MOVABLE TROUGH-LIKE MEANS FOR CATCHING AND MOVING SEVERED PIECES OF THE BAR.
Inventors
- 👤 Albert G Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:43
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/72; B23Q1/76; B23Q7/00; B23Q7/12; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2514; Y10T82/2593
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) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |