US3190187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastener driving apparatus
Assignee: Duo Fast Corp
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Filing: 1962-12-21
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Granted: 1965-06-22
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Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 Richard H Doyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:01
CPC Classifications
F; F01; F01B; F01B23/00; F01B23/06; B; B25; B25C; B25C1/00; B25C1/04; B25C1/044; B25C1/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A FASTENER DRIVING APPARATUS COMPRISING A HOUSING SUPPLIED WITH A PRESSURIZED FLUID AND INCLUDING A CYLINDER, FASTENER DRIVING MEANS INCLUDING PISTON MEANS SLIDABLY MOUNTED IN THE CLYINDER, CONTROL MEANS FOR ALTERNATELY CONNECTING THE UPPER END OF THE CYLINDER MEANS TO THE ATMOSPHERE AND TO THE FLUID TO DRIVE THE PISTON MEANS, AND MEANS RESPONSIVE TO THE PRESSURE IN THE UPPER END OF THE CYLINDER AND CONTROLLED TO THE ATMOSPHER FOR SELECTIVELY SUPEND OF THE CYLINDER TO THE ATMOSPHERE FOR SELECTIVELY SUPPLYING FLUID TO THE CYLINDER BELOW THE TOP OF THE PISTON MEANS WHEN THE UPPER END OF THE CYLINDER DISPOSED ABOVE THE PISTON MEANS IS PLACED AT ATMOSPHERIC PRESSURE.
Claim 2
Dependent Claim
109 words
A FASTENER DRIVING APPARATUS COMPRISING A HOUSING SUPPLIED WITH A PRESSURIZED FLUID AND INCLUDING A CYLINDER, FASTENER DRIVING MEANS INCLUDING PISTON MEANS SLIDABLY MOUNTED IN THE CLYINDER, CONTROL MEANS FOR ALTERNATELY CONNECTING THE UPPER END OF THE CYLINDER MEANS TO THE ATMOSPHERE AND TO THE FLUID TO DRIVE THE PISTON MEANS, AND MEANS RESPONSIVE TO THE PRESSURE IN THE UPPER END OF THE CYLINDER AND CONTROLLED TO THE ATMOSPHER FOR SELECTIVELY SUPEND OF THE CYLINDER TO THE ATMOSPHERE FOR SELECTIVELY SUPPLYING FLUID TO THE CYLINDER BELOW THE TOP OF THE PISTON MEANS WHEN THE UPPER END OF THE CYLINDER DISPOSED ABOVE THE PISTON MEANS IS PLACED AT ATMOSPHERIC PRESSURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |