Patent US3090450A successfully refreshed from Google Patents.
US3090450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact drill
Assignee: Individual
•
Filing: 1960-03-16
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Granted: 1963-05-21
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Expires: 1980-03-16
Abstract
No abstract record available.
Inventors
- 👤 Fulop Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:57
CPC Classifications
B; B25; B25D; B25D11/00; B25D11/06; B25D11/10; B25D11/102; B25D2211/00; B25D2211/06; B25D2211/062; B25D2211/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
224 words
AN IMPACT DRILL, COMPRISING IN COMBINATION, A HOUSING INCLUDING AN ELECTRIC MOTOR ENCASED THEREIN; A SPINDLE DRIVEN BY SAID MOTOR, JOURNALED IN SAID HOUSING; A MANDREL IMMOVABLY MOUNTED ON THE SPINDLE; A TOOL HOLDING HOLLOW HEAD SLIDABLY MOUNTED ON THE MANDREL AND FREE TO RECIPROCATE LONGITUDINALLY THEREOF, MEANS MOUNTED ON THE MANDREL ENGAGED WITH THE HEAD TO PREVENT RELATIVE ROTATION THEREBETWEEN; AN ANVIL DISC IMMOVABLY MOUNTED ON THE SPINDLE, SPACED INWARDLY OF THE MANDREL, HAVING FIRST AND SECOND END SURFACES FACED TOWARD AND AWAY FROM THE HEAD MEMBER, RESPECTIVELY, THE ANVIL HAVING A PLURALITY OF RADIALLY SPACED BORES THERETHROUGH, PARALLEL TO THE SPINDLE AXIS, AND A PLURALITY OF BALLS EMBEDDED IN ITS SECOND SURFACE POSITIONED BETWEEN THE BORES; A RAM MEMBER SLIDABLY MOUNTED ON THE SPINDLE BETWEEN THE TOOK HOLDING HEAD AND THE ANVIL DISC, HAVING A PLURALITY OF RADIALLY SPACED STUDS LOOSELY FITTED THROUGH THE ANVIL BORES, WHEREBY THE RAM IS KEYED TO THE SPINDLE FOR ROTATION THEREWITH BUT FREE TO FLOAT LONGITUDINALLY THEREOF, BETWEEN A FIRST POSITION, AGAINST THE FIRST END SURFACE OF THE ANVIL, AND A SECOND POSITION, AGAINST THE HOLLOW HEAD, THE LENGTH OF THE RAM STUDS BEING SUCH THAT THEY EXTEND BEYOND THE SECOND END FACE OF THE ANVIL WHEN THE RAM IS IN ITS FIRST POSITION; A HAMMER MEMBER SLIDABLY MOUNTED ON THE SPINDLE BETWEEN THE ANVIL AND
Claim 2
Dependent Claim
224 words
AN IMPACT DRILL, COMPRISING IN COMBINATION, A HOUSING INCLUDING AN ELECTRIC MOTOR ENCASED THEREIN; A SPINDLE DRIVEN BY SAID MOTOR, JOURNALED IN SAID HOUSING; A MANDREL IMMOVABLY MOUNTED ON THE SPINDLE; A TOOL HOLDING HOLLOW HEAD SLIDABLY MOUNTED ON THE MANDREL AND FREE TO RECIPROCATE LONGITUDINALLY THEREOF, MEANS MOUNTED ON THE MANDREL ENGAGED WITH THE HEAD TO PREVENT RELATIVE ROTATION THEREBETWEEN; AN ANVIL DISC IMMOVABLY MOUNTED ON THE SPINDLE, SPACED INWARDLY OF THE MANDREL, HAVING FIRST AND SECOND END SURFACES FACED TOWARD AND AWAY FROM THE HEAD MEMBER, RESPECTIVELY, THE ANVIL HAVING A PLURALITY OF RADIALLY SPACED BORES THERETHROUGH, PARALLEL TO THE SPINDLE AXIS, AND A PLURALITY OF BALLS EMBEDDED IN ITS SECOND SURFACE POSITIONED BETWEEN THE BORES; A RAM MEMBER SLIDABLY MOUNTED ON THE SPINDLE BETWEEN THE TOOK HOLDING HEAD AND THE ANVIL DISC, HAVING A PLURALITY OF RADIALLY SPACED STUDS LOOSELY FITTED THROUGH THE ANVIL BORES, WHEREBY THE RAM IS KEYED TO THE SPINDLE FOR ROTATION THEREWITH BUT FREE TO FLOAT LONGITUDINALLY THEREOF, BETWEEN A FIRST POSITION, AGAINST THE FIRST END SURFACE OF THE ANVIL, AND A SECOND POSITION, AGAINST THE HOLLOW HEAD, THE LENGTH OF THE RAM STUDS BEING SUCH THAT THEY EXTEND BEYOND THE SECOND END FACE OF THE ANVIL WHEN THE RAM IS IN ITS FIRST POSITION; A HAMMER MEMBER SLIDABLY MOUNTED ON THE SPINDLE BETWEEN THE ANVIL AND
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) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |