US3178210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow auger
Assignee: Mobile Drilling Co Inc
•
Filing: 1963-12-11
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Granted: 1965-04-13
•
Expires: 1983-12-11
Abstract
No abstract record available.
Inventors
- 👤 Robert E Dickinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:45
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/22; F; F16; F16D; F16D1/00; F16D1/02; F16D1/10; F16D1/108; F16D2001/102; Y; Y10; Y10T; Y10T403/00; Y10T403/55
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
211 words
A READILY REPAIRABLE JOINT BETWEEN ADJACENT SECTIONS OF A HOLLOW AUGER COMPRISING A PAIR OF TUBES EACH HAVING A HELICAL FLIGHT FIXED TO AND REINFORCING THE EXTERNAL PERIPHERY THEREOF; EACH TUBE OF SAID PAIR OF TUBES HAVING A CROSS SECTIONAL AREA AND BEING OF CONSTANT CROSS SECTION ALL ALONG THE LENGTH THEREOF; SAID CROSS SECTIONS BEING CONGRUENT, INTERNALLY POLYGONAL AND EXTERNALLY CIRCULAR; A CONNECTING BAR HAVING AN EXTERNAL POLYGONAL CONFIGURATION WHICH IS COMPLEMENTARY TO THE INTERNAL CONFIGURATION OF SAID TUBES; SAID CONNECTING BAR ALSO HAVING A CROSS SECTIONAL AREA; SAID BAR HAVING ONE END RECEIVED IN ONE OF SAID TUBES AND THE OTHER END RECEIVED IN THE OTHER SAID TUBES; READILY REMOVABLE MEANS ATTACHING EACH OF SAID TUBES TO SAID BAR; SAID TUBES ABUTTING ONE ANOTHER WITH THE END OF ONE FLIGHT OF ONE TUBE FORMING A CONTINUOUS SPIRAL WITH THE END OF THE FLIGHT OF THE OTHER TUBE; THE CROSS SECTIONAL AREAS OF SAID FLIGHT REINFORCED TUBES AND SAID BAR BEING SO PROPORTIONED THAT EACH OF SAID TUBES IS CAPABLE OF TRANSMITTING A HIGHER TORQUE LOAD THAN SAID BAR; AND THE PARTS BEING SO CONSTRUCTED AND ARRANGED THAT UPON THE IMPOSITION OF A SUDDEN INCREASE OF TORQUE STRESS, SAID BAR WILL SHEAR THEREBY PREVENTING DAMAGE TO SAID TUBES AND FLIGHTS.
Claim 2
Dependent Claim
211 words
A READILY REPAIRABLE JOINT BETWEEN ADJACENT SECTIONS OF A HOLLOW AUGER COMPRISING A PAIR OF TUBES EACH HAVING A HELICAL FLIGHT FIXED TO AND REINFORCING THE EXTERNAL PERIPHERY THEREOF; EACH TUBE OF SAID PAIR OF TUBES HAVING A CROSS SECTIONAL AREA AND BEING OF CONSTANT CROSS SECTION ALL ALONG THE LENGTH THEREOF; SAID CROSS SECTIONS BEING CONGRUENT, INTERNALLY POLYGONAL AND EXTERNALLY CIRCULAR; A CONNECTING BAR HAVING AN EXTERNAL POLYGONAL CONFIGURATION WHICH IS COMPLEMENTARY TO THE INTERNAL CONFIGURATION OF SAID TUBES; SAID CONNECTING BAR ALSO HAVING A CROSS SECTIONAL AREA; SAID BAR HAVING ONE END RECEIVED IN ONE OF SAID TUBES AND THE OTHER END RECEIVED IN THE OTHER SAID TUBES; READILY REMOVABLE MEANS ATTACHING EACH OF SAID TUBES TO SAID BAR; SAID TUBES ABUTTING ONE ANOTHER WITH THE END OF ONE FLIGHT OF ONE TUBE FORMING A CONTINUOUS SPIRAL WITH THE END OF THE FLIGHT OF THE OTHER TUBE; THE CROSS SECTIONAL AREAS OF SAID FLIGHT REINFORCED TUBES AND SAID BAR BEING SO PROPORTIONED THAT EACH OF SAID TUBES IS CAPABLE OF TRANSMITTING A HIGHER TORQUE LOAD THAN SAID BAR; AND THE PARTS BEING SO CONSTRUCTED AND ARRANGED THAT UPON THE IMPOSITION OF A SUDDEN INCREASE OF TORQUE STRESS, SAID BAR WILL SHEAR THEREBY PREVENTING DAMAGE TO SAID TUBES AND FLIGHTS.
References Cited (Backward Citations)
US593247A
Cited
US3104757A
Cited
US819434A
Cited
US893143A
Cited
US2260811A
Cited
US2675257A
Cited
US3000656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |