Patent US3178210A successfully refreshed from Google Patents.
US3178210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow auger
Assignee: Mobile Drilling Co Inc
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Filing: 1963-12-11
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Granted: 1965-04-13
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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 01:51
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.
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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) | 1968-04-12 | 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 |