Patent US230157A successfully refreshed from Google Patents.
Patent US3128581A successfully refreshed from Google Patents.
US3128581A
Expired / Lapsed
US
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Floor grinders
Assignee: Individual
•
Filing: 1962-04-03
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Granted: 1964-04-14
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Expires: 1982-04-03
Abstract
No abstract record available.
Inventors
- 👤 Tosetti Antonio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:47
CPC Classifications
B; B24; B24B; B24B7/00; B24B7/10; B24B7/18; B24B7/186; A; A47; A47L; A47L11/00; A47L11/02; A47L11/10; A47L11/14; A47L11/16; A47L11/40; A47L11/4052; A47L11/4058; A47L11/4063; A47L11/4069
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
IN A MACHINE FOR GRINDING FLOORS, A CENTRAL GEAR HAVING TEETH INCLINED IN AN AXIAL DIRECTION, A PLURALITY OF FLOATING VERTICAL SHAFTS ARRANGED AROUND AND RADIALLY SPACED FROM SAID CENTRAL GEAR AND MOUNTED FOR ROTARY MOVEMENT, A LATERAL GEAR HAVING CORRESPONDINGLY INCLINED TEETH FIXEDLY MOUNTED ON EACH SHAFT AND MESHING WITH THE CENTRAL GEAR, SAID SHAFTS AND THEIR RESPECTIVE LATERAL GEARS BEING FREE AT ALL TIMES DURING OPERATION TO MOVE UP AND DOWN, A GRINDING ELEMENT MOUNTED ON A LOWER END OF EACH VERTICAL SHAFT AND SUPPORTING THE LATTER SHAFT AND THE LATERAL GEAR MOUNTED THEREON, AND DRIVING MEANS FOR CAUSING THE VERTICAL SHAFTS AND THE GRINDING ELEMENTS THEREOF TO ROTATE, THE INCLINE OF THE TEETH OF THE CENTRAL AND LATERAL GEARS BEING SUCH AS TO IMPART UNDER THE ACTION OF SAID DRIVING MEANS A DOWNWARD COMPONENT TO THE LATERAL GEARS, SHAFTS AND GRINDING ELEMENTS DURING ROTATION OF SAID SHAFTS.
Claim 2
Dependent Claim
150 words
IN A MACHINE FOR GRINDING FLOORS, A CENTRAL GEAR HAVING TEETH INCLINED IN AN AXIAL DIRECTION, A PLURALITY OF FLOATING VERTICAL SHAFTS ARRANGED AROUND AND RADIALLY SPACED FROM SAID CENTRAL GEAR AND MOUNTED FOR ROTARY MOVEMENT, A LATERAL GEAR HAVING CORRESPONDINGLY INCLINED TEETH FIXEDLY MOUNTED ON EACH SHAFT AND MESHING WITH THE CENTRAL GEAR, SAID SHAFTS AND THEIR RESPECTIVE LATERAL GEARS BEING FREE AT ALL TIMES DURING OPERATION TO MOVE UP AND DOWN, A GRINDING ELEMENT MOUNTED ON A LOWER END OF EACH VERTICAL SHAFT AND SUPPORTING THE LATTER SHAFT AND THE LATERAL GEAR MOUNTED THEREON, AND DRIVING MEANS FOR CAUSING THE VERTICAL SHAFTS AND THE GRINDING ELEMENTS THEREOF TO ROTATE, THE INCLINE OF THE TEETH OF THE CENTRAL AND LATERAL GEARS BEING SUCH AS TO IMPART UNDER THE ACTION OF SAID DRIVING MEANS A DOWNWARD COMPONENT TO THE LATERAL GEARS, SHAFTS AND GRINDING ELEMENTS DURING ROTATION OF SAID SHAFTS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |