US3352471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastener driving apparatus
Assignee: Bostitch Inc
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Filing: 1965-10-05
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Granted: 1967-11-14
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Expires: 1985-10-05
Abstract
No abstract record available.
Inventors
- 👤 Edward I Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:30
CPC Classifications
A; A43; A43D; A43D69/00; A43D69/02; B; B25; B25C; B25C1/00; B25C1/04; B25C1/041
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A PNEUMATIC DRIVING TOOL COMPRISING A CYLINDER HAVING AN OPEN END, A PISTON DISPOSED IN SAID CYLINDER FOR AXIAL MOVEMENT BETWEEN FIRST AND SECOND POSITIONS INCLUDING A DRIVING STROKE IN A DIRECTION AWAY FROM THE OPEN END OF SAID CYLINDER, A FASTENER DRIVING ELEMENT SECURED TO SAID PISTON AT ONE END THEREOF, A PISTON STOP SPACED ABOVE SAID OPEN END OF SAID CYLINDER INCLUDING A FIRST SURFACE PORTION ENGAGING THE PISTON SURFACE OPPOSED TO SAID ONE END TO PROVIDE AN ANNULAR SEAL BETWEEN SAID PISTON STOP AND SAID PISTON WHEN SAID PISTON IS DISPOSED IN SAID FIRST POSITION, MEANS DEFINING AN EXHAUST PASSAGE HAVING AN ORIFICE DISPOSED FOR COMMUNICATION WITH SAID OPPOSED SURFACE OF SAID PISTON INSIDE THE AREA OF SAID ANNULAR SEAL, A RESERVOIR CHAMBER FOR SUPPLYING FLUID PRESSURE TO SAID CYLINDER THROUGH THE OPEN UPPER END THEREOF IN A PISTON DRIVING STROKE, A FIRST PORT ADJACENT SAID OPEN END OF SAID CYLINDER, SAID PISTON WHEN IN SAID
Claim 2
Dependent Claim
159 words
A PNEUMATIC DRIVING TOOL COMPRISING A CYLINDER HAVING AN OPEN END, A PISTON DISPOSED IN SAID CYLINDER FOR AXIAL MOVEMENT BETWEEN FIRST AND SECOND POSITIONS INCLUDING A DRIVING STROKE IN A DIRECTION AWAY FROM THE OPEN END OF SAID CYLINDER, A FASTENER DRIVING ELEMENT SECURED TO SAID PISTON AT ONE END THEREOF, A PISTON STOP SPACED ABOVE SAID OPEN END OF SAID CYLINDER INCLUDING A FIRST SURFACE PORTION ENGAGING THE PISTON SURFACE OPPOSED TO SAID ONE END TO PROVIDE AN ANNULAR SEAL BETWEEN SAID PISTON STOP AND SAID PISTON WHEN SAID PISTON IS DISPOSED IN SAID FIRST POSITION, MEANS DEFINING AN EXHAUST PASSAGE HAVING AN ORIFICE DISPOSED FOR COMMUNICATION WITH SAID OPPOSED SURFACE OF SAID PISTON INSIDE THE AREA OF SAID ANNULAR SEAL, A RESERVOIR CHAMBER FOR SUPPLYING FLUID PRESSURE TO SAID CYLINDER THROUGH THE OPEN UPPER END THEREOF IN A PISTON DRIVING STROKE, A FIRST PORT ADJACENT SAID OPEN END OF SAID CYLINDER, SAID PISTON WHEN IN SAID
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |