Patent US3609851A successfully refreshed from Google Patents.
US3609851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal working apparatus and process
Assignee: The Ohio State University
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Filing: 1967-10-19
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Granted: 1971-10-05
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Expires: 1987-10-19
Abstract
Abstract THIS INVENTION RELATES GENERALLY TO THE APPLICATION OF ELECTRONECHANICAL TRANSDUCER ENERGY TO A WORKPIECE, AND PARTICULARLY TO THE UTILIZATION OF A HIGH Q ELECTROMECHANICAL TRANSDUCER CAPABLE OF DELIVERING EXTREMELY HIGH-POWER OUTPUTS TO A WORK SURFACE FOR THE DEFORMATION OF METALLIC OR NON-METALLIC MATERIALS, SUCH AS, IN RIVETING, COLD HEADING, BONDING, AND SWAGING.
Inventors
- 👤 Robert C Mcmaster
- 👤 Charles C Libby
- 👤 Hildegard M Minchenko
- 👤 Fred A De Saw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:03
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/10; B21J15/16; B21J15/24; B21J15/02; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53709; Y10T29/5377; Y10T29/53774
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |