US3203610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic hammer
Assignee: Individual
•
Filing: 1963-04-26
•
Granted: 1965-08-31
•
Expires: 1983-04-26
Abstract
No abstract record available.
Inventors
- 👤 Richard R Farrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:25
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
AN AUTOMATIC HAMMER COMPRISING A NAIL GUIDE HAVING A NAIL RECEIVING BORE TERMINATING IN AN OPEN END, A STRIKER OF RELATIVELY SMALL CROSS SECTIONAL AREA EXTENDING INTO THE NAIL GUIDE FROM THE OPPOSITE END THEREOF AND AN IMPELLER OF RELATIVELY GREAT CROSS-SECTIONAL AREA IN COMMUNICATION WITH THE STRIKER THROUGH A COMPLETELY CONFINED FIXED VOLUME OF NON-COMPRESIBLE FLUID, EACH OF THE STRIKER AND IMPELLER BEING MOUNTED AND GUIDED FOR MOVEMENT IN CONTACT WITH AND TOWARD AND AWAY FROM THE COMPLETELY CONFINED FIXED VOLUME OF NON-COMPRESSIBLE FLUID, AND MEANS FOR RAPIDLY ADVANCING THE IMPELLER IN THE DIRECTION TOWARD THE COMPLETELY CONFINED FIXED VOLUME THE NON-COMPRESSIBLE FLUID, CAUSING, SINCE THE VOLUME OF THE NON-COMPRESSIBLE FLUID REMAINS CONSTANT, THE STRIKER TO BE PROJECTED IN THE DIRECTION AWAY FROM THE COMPLETELY CONFINED FIXED VOLUME OF NON-COMPRESSIBLE FLUID AT HIGHER SPEED THAN THE SPEED OF ADVANCE OF THE IMPELLER, TO EXERT GREATER PRESSURE THAN THE PRESSURE EXERTED BY THE IMPELLER ON THE COMPLETELY CONFINED FIXED VOLUME OF NON-COMPRESSIBLE FLUID AND THROUGH A GREATER DISTANCE THAN THAT THROUGH WHICH THE IMPELLER ADVANCES, ENABLING THE STRIKER TO DRIVE A NAIL IN THE NAIL GUIDE THROUGH THE OPEN END THEREOF.
Claim 2
Dependent Claim
191 words
AN AUTOMATIC HAMMER COMPRISING A NAIL GUIDE HAVING A NAIL RECEIVING BORE TERMINATING IN AN OPEN END, A STRIKER OF RELATIVELY SMALL CROSS SECTIONAL AREA EXTENDING INTO THE NAIL GUIDE FROM THE OPPOSITE END THEREOF AND AN IMPELLER OF RELATIVELY GREAT CROSS-SECTIONAL AREA IN COMMUNICATION WITH THE STRIKER THROUGH A COMPLETELY CONFINED FIXED VOLUME OF NON-COMPRESIBLE FLUID, EACH OF THE STRIKER AND IMPELLER BEING MOUNTED AND GUIDED FOR MOVEMENT IN CONTACT WITH AND TOWARD AND AWAY FROM THE COMPLETELY CONFINED FIXED VOLUME OF NON-COMPRESSIBLE FLUID, AND MEANS FOR RAPIDLY ADVANCING THE IMPELLER IN THE DIRECTION TOWARD THE COMPLETELY CONFINED FIXED VOLUME THE NON-COMPRESSIBLE FLUID, CAUSING, SINCE THE VOLUME OF THE NON-COMPRESSIBLE FLUID REMAINS CONSTANT, THE STRIKER TO BE PROJECTED IN THE DIRECTION AWAY FROM THE COMPLETELY CONFINED FIXED VOLUME OF NON-COMPRESSIBLE FLUID AT HIGHER SPEED THAN THE SPEED OF ADVANCE OF THE IMPELLER, TO EXERT GREATER PRESSURE THAN THE PRESSURE EXERTED BY THE IMPELLER ON THE COMPLETELY CONFINED FIXED VOLUME OF NON-COMPRESSIBLE FLUID AND THROUGH A GREATER DISTANCE THAN THAT THROUGH WHICH THE IMPELLER ADVANCES, ENABLING THE STRIKER TO DRIVE A NAIL IN THE NAIL GUIDE THROUGH THE OPEN END THEREOF.
References Cited (Backward Citations)
US2526956A
Cited
US2905034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |