Patent US3302840A successfully refreshed from Google Patents.
US3302840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosively actuated fastener driving tool
Assignee: Japan Drive It Co Ltd
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Filing: 1965-04-26
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Granted: 1967-02-07
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Expires: 1985-04-26
Abstract
No abstract record available.
Inventors
- 👤 Sekiguchi Toshishige
- 👤 Saba Meikichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:49
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/08; B25C1/10; B25C1/14; B25C1/143; B25C1/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
AN EXPLOSIVELY ACTUATED FASTENER DRIVING TOOL HAVING A FRONT PORTION COMPRISING A BARREL, A CARTRIDGE RECEIVING PLUG AND ON WHICH SAID BARREL IS SLIDABLY MOUNTED AND A PISTON SLIDABLE IN SAID BARREL, AND A REAR PORTION COMPRISING A FIRING MECHANISM, SAID PLUG BEING COUPLED TO SAID FIRING MECHANISM, SAID FRONT PORTION FURTHER COMPRISING A FRONT CYLINDRICAL MEMBER SURROUNDING THE BARREL AND HAVING A PLURALITY OF PROJECTIONS PROJECTING INWARDLY FROM THE INNER SURFACE THEREOF AND SPACED ALONG THE LENGTH THEREOF, SAID REAR PORTION FURTHER COMPRISING A REAR CYLINDRICAL MEMBER SURROUNDING THE BARREL AND HAVING A PLURALITY OF PROJECTIONS PROJECTIONS INWARDLY FROM THE INNER SURFACE THEREOF AND SPACED ALONG THE LENGTH THEREOF AT DISTANCES CORRESPONDING TO THE SPACING OF SAID
Claim 2
Dependent Claim
118 words
AN EXPLOSIVELY ACTUATED FASTENER DRIVING TOOL HAVING A FRONT PORTION COMPRISING A BARREL, A CARTRIDGE RECEIVING PLUG AND ON WHICH SAID BARREL IS SLIDABLY MOUNTED AND A PISTON SLIDABLE IN SAID BARREL, AND A REAR PORTION COMPRISING A FIRING MECHANISM, SAID PLUG BEING COUPLED TO SAID FIRING MECHANISM, SAID FRONT PORTION FURTHER COMPRISING A FRONT CYLINDRICAL MEMBER SURROUNDING THE BARREL AND HAVING A PLURALITY OF PROJECTIONS PROJECTING INWARDLY FROM THE INNER SURFACE THEREOF AND SPACED ALONG THE LENGTH THEREOF, SAID REAR PORTION FURTHER COMPRISING A REAR CYLINDRICAL MEMBER SURROUNDING THE BARREL AND HAVING A PLURALITY OF PROJECTIONS PROJECTIONS INWARDLY FROM THE INNER SURFACE THEREOF AND SPACED ALONG THE LENGTH THEREOF AT DISTANCES CORRESPONDING TO THE SPACING OF SAID
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |