Patent US3204490A successfully refreshed from Google Patents.
US3204490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power indexing mechanism for machine tools
Assignee: Giddings and Lewis LLC
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Filing: 1962-07-31
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Granted: 1965-09-07
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Expires: 1982-07-31
Abstract
No abstract record available.
Inventors
- 👤 Gordon H Jones
- 👤 Everett E Hosea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:32
CPC Classifications
B; B23; B23Q; B23Q16/00; B23Q16/02; B23Q16/08; B23Q16/10; Y; Y10; Y10T; Y10T74/00; Y10T74/14; Y10T74/1418; Y10T74/1424; Y10T74/1453; Y10T74/1476
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
IN A MACHINE TOOL, THE COMBINATION COMPRISING, AN ELONGATED HOLLOW RAM HAVING A GENERALLY RECTANGULAR CROSS SECTION, A TURRET ROTATABLY MOUNTED ON ONE SIDE OF SAID RAM ADJACENT ONE END THEREOF, A SUPPORTING HEAD MOUNTING SAID RAM FOR RECIPROCAL MOVEMENT BETWEEN EXTENDED AND WITHDRAWN POSITIONS, SAID SUPPORTING HEAD SUBSTANTIALLY COMPLETELY SURROUNDING THE THREE REMAINING SIDES OF SAID RAM WHEN SAID RAM IS IN SAID WITHDRAWN POSITION, A ROTARY HYDRAULIC ACTUATOR ENCLOSED WITHIN SAID ONE END OF SAID RAM AND HAVING A DRIVE SHAFT COUPLED TO SAID TURRET, SAID ACTUATOR HAVING A CHAMBER ENCLOSING A DRIVING VANE SECURED TO SAID SHAFT, STRUCTURE WITHIN SAID ACTUATOR DIVIDING SAID CHAMBER INTO SEPARATE COMPARTMENTS ON EITHER SIDE OF SAID VANE, MEANS FOR SELECTIVELY ADMITTING HYDRAULIC FLUID INTO EACH OF AID COMPARTMENTS FOR ROTATING SAID TURRET IN OPPOSITE DIRECTIONS, AND SAID VANE HAVING AN OUTER END PORTION SPACED RADIALLY INWARDLY FROM SAID CHAMBER TO PROVIDE RUNNING CLEARANCE AT ANY ROTATIONAL POSITION OF SAID VANE WITHIN SAID CHAMBER SO THAT
Claim 2
Dependent Claim
164 words
IN A MACHINE TOOL, THE COMBINATION COMPRISING, AN ELONGATED HOLLOW RAM HAVING A GENERALLY RECTANGULAR CROSS SECTION, A TURRET ROTATABLY MOUNTED ON ONE SIDE OF SAID RAM ADJACENT ONE END THEREOF, A SUPPORTING HEAD MOUNTING SAID RAM FOR RECIPROCAL MOVEMENT BETWEEN EXTENDED AND WITHDRAWN POSITIONS, SAID SUPPORTING HEAD SUBSTANTIALLY COMPLETELY SURROUNDING THE THREE REMAINING SIDES OF SAID RAM WHEN SAID RAM IS IN SAID WITHDRAWN POSITION, A ROTARY HYDRAULIC ACTUATOR ENCLOSED WITHIN SAID ONE END OF SAID RAM AND HAVING A DRIVE SHAFT COUPLED TO SAID TURRET, SAID ACTUATOR HAVING A CHAMBER ENCLOSING A DRIVING VANE SECURED TO SAID SHAFT, STRUCTURE WITHIN SAID ACTUATOR DIVIDING SAID CHAMBER INTO SEPARATE COMPARTMENTS ON EITHER SIDE OF SAID VANE, MEANS FOR SELECTIVELY ADMITTING HYDRAULIC FLUID INTO EACH OF AID COMPARTMENTS FOR ROTATING SAID TURRET IN OPPOSITE DIRECTIONS, AND SAID VANE HAVING AN OUTER END PORTION SPACED RADIALLY INWARDLY FROM SAID CHAMBER TO PROVIDE RUNNING CLEARANCE AT ANY ROTATIONAL POSITION OF SAID VANE WITHIN SAID CHAMBER SO THAT
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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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |