Patent US4229801A successfully refreshed from Google Patents.
Patent US3075415A successfully refreshed from Google Patents.
US3075415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for deep drilling
Assignee: Individual
•
Filing: 1959-05-04
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Granted: 1963-01-29
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Expires: 1979-05-04
Abstract
No abstract record available.
Inventors
- 👤 Gustav H Dabringhaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:04
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/34; B23Q5/38; B23Q5/40; B23Q5/402; B23B; B23B41/00; B23B41/02; Y; Y10; Y10S; Y10S408/00; Y10S408/705; Y10T; Y10T408/00; Y10T408/44; Y10T408/45; Y10T408/455
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
222 words
IN A DEEP DRILLING MACHINE OF THE CONTINUOUS FEED TYPE WHEREIN THE SPINDLE IS ADAPTED TO HAVE A SPEED AS HIGH AS ABOUT 10,000 R.P.M. AND A FEED AS LOW AS .0001" PER REVOLUTION OF THE SPINDLE, THE COMBINATION OF A HEAD, A HOLLOW SPINDLE JOURNALLED ON SAID HEAD AND HAVING COLLET MEANS THEREON FOR SUPPORTING A HOLLOW DRILL, MEANS FOR ADMITTING LIQUID LUBRICANT TO THE HOLLOW SPINDLE AND THROUGH THE SPINDLE TO THE DRILL THEREON, A MOTOR FOR DRIVING THE SPINDLE AT A RELATIVELY HIGH SPEED AND MEANS FOR ADVANCING SAID HEAD AND SPINDLE IN A DIRECTION AXIALLY OF THE SPINDLE AT A RELATIVELY SLOW FEED RATE WHICH CAN BE VARIED BY MINUTE INCREMENTS COMPRISING A SCREW MEMBER AND A NUT MEMBER, ONE OF WHICH IS AXIALLY AND ROTATABLY FIXED AND THE OTHER BEING ROTATABLE ON THE HEAD AND MOVABLE AXIALLY ON THE OTHER WITH SAID HEAD, A WORM ON SAID SPINDLE, A PAIR OF PARALLEL SHAFTS JOURNALLED ON SAID HEAD, ONE OF SAID SHAFTS HAVING A WORM WHEEL FIXED THEREON AND MESHING WITH SAID WORM GEAR, THE OTHER SHAFT HAVING A WORM GEAR THEREON, ONE OF SAID SCREW AND NUT MEMBERS HAVING A WORM WHEEL FIXED THERETO AND MESHING WITH SAID LAST MENTIONED WORM GEAR AND A PAIR OF MESHING PICK-OFF GEARS KEYED TO SAID SHAFTS FOR READY REMOVAL THEREFROM.
Claim 2
Dependent Claim
222 words
IN A DEEP DRILLING MACHINE OF THE CONTINUOUS FEED TYPE WHEREIN THE SPINDLE IS ADAPTED TO HAVE A SPEED AS HIGH AS ABOUT 10,000 R.P.M. AND A FEED AS LOW AS .0001" PER REVOLUTION OF THE SPINDLE, THE COMBINATION OF A HEAD, A HOLLOW SPINDLE JOURNALLED ON SAID HEAD AND HAVING COLLET MEANS THEREON FOR SUPPORTING A HOLLOW DRILL, MEANS FOR ADMITTING LIQUID LUBRICANT TO THE HOLLOW SPINDLE AND THROUGH THE SPINDLE TO THE DRILL THEREON, A MOTOR FOR DRIVING THE SPINDLE AT A RELATIVELY HIGH SPEED AND MEANS FOR ADVANCING SAID HEAD AND SPINDLE IN A DIRECTION AXIALLY OF THE SPINDLE AT A RELATIVELY SLOW FEED RATE WHICH CAN BE VARIED BY MINUTE INCREMENTS COMPRISING A SCREW MEMBER AND A NUT MEMBER, ONE OF WHICH IS AXIALLY AND ROTATABLY FIXED AND THE OTHER BEING ROTATABLE ON THE HEAD AND MOVABLE AXIALLY ON THE OTHER WITH SAID HEAD, A WORM ON SAID SPINDLE, A PAIR OF PARALLEL SHAFTS JOURNALLED ON SAID HEAD, ONE OF SAID SHAFTS HAVING A WORM WHEEL FIXED THEREON AND MESHING WITH SAID WORM GEAR, THE OTHER SHAFT HAVING A WORM GEAR THEREON, ONE OF SAID SCREW AND NUT MEMBERS HAVING A WORM WHEEL FIXED THERETO AND MESHING WITH SAID LAST MENTIONED WORM GEAR AND A PAIR OF MESHING PICK-OFF GEARS KEYED TO SAID SHAFTS FOR READY REMOVAL THEREFROM.
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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |