Apparatus for driving rivets using explosive charge
Abstract
Abstract A RIVET DRIVING SYSTEM WHEREIN A MECHANICAL BLOW IS DELIVERED TO ONE END OF A RIVET BY AN AIR-DRIVEN HAMMER STRIKING AN IMPACT MEMBER WHICH ACTS AS A RIVET SET ENGAGING AND UPSETTING A HEAD ON THIS END OF THE RIVET. THE UNHEADED OPPOSITE END OF THE RIVET DELIVERS AN INITIAL SHOCK, AS THIS UPSETTING COMMENCES, AGAINST AN UPSETTING TOOL, OR SECOND RIVET SET, POSITIONED THEREAGAINST, WHICH IN TURN TRANSMITS A SHOCK TO AN EXPLOSIVE CHARGE. THE EXPLOSIVE CHARGE THEREBY EXPLODES, AND THE RESULTING GAS PRESSURE AND SHOCK DRIVES THE LAST-MENTIONED RIVET SET BACK TO FORM A HEAD ON THE CORRESPONDING END OF THE RIVET, WHILE THE FIRST MENTIONED RIVET SET IS STILL UPSETTING A HEAD ON THE FIRST MENTIONED END OF THE RIVET.
Inventors
- 👤 James C Winslow
- 👤 Ralph D Adams
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |