US3278236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual augering machine
Assignee: Salem Tool Co
•
Filing: 1962-07-05
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Granted: 1966-10-11
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Expires: 1982-07-05
Abstract
No abstract record available.
Inventors
- 👤 George L Adams
- 👤 Charles T Govin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:18
CPC Classifications
E; E21; E21C; E21C27/00; E21C27/20; E21C27/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
AN AUGER MINING MACHINE HAVING A FRAME SUPPORTING A ROTARY MINING ASSEMBLY OPERATED BY A FEED AND ROTARY DRIVE MEANS, THE ROTARY MINING ASSEMBLY INCLUDING AUGER SECTIONS CONNECTED BY A PIN AND SOCKET JOINT AND A BIASED LATCH MEANS, ONE OF SAID SECTIONS HAVING BIASED UNLATCH MEANS IN OPERATIVE POSITION TO DISENGAGE SAID LATCH MEANS, SAID ROTARY MINING ASSEMBLY WITH SAID AUGER SECTIONS BEING STOPPED IN SAID FRAME AT PREDETERMINED ROTARY AND LONGITUDINAL POSITIONS FOR CHANGING AUGER SECTIONS, AND SERVOMOTOR MEANS MOUNTED ON SAID MACHINE IN POSITION TO OPERATE SAID PREPOSITIONED UNLATCH MEANS TO DISENGAGE SAID LATCH MEANS TO PERMIT SEPARATION OF SAID AUGER SECTION FROM SAID ROTARY MINING ASSEMBLY.
Claim 2
Dependent Claim
110 words
AN AUGER MINING MACHINE HAVING A FRAME SUPPORTING A ROTARY MINING ASSEMBLY OPERATED BY A FEED AND ROTARY DRIVE MEANS, THE ROTARY MINING ASSEMBLY INCLUDING AUGER SECTIONS CONNECTED BY A PIN AND SOCKET JOINT AND A BIASED LATCH MEANS, ONE OF SAID SECTIONS HAVING BIASED UNLATCH MEANS IN OPERATIVE POSITION TO DISENGAGE SAID LATCH MEANS, SAID ROTARY MINING ASSEMBLY WITH SAID AUGER SECTIONS BEING STOPPED IN SAID FRAME AT PREDETERMINED ROTARY AND LONGITUDINAL POSITIONS FOR CHANGING AUGER SECTIONS, AND SERVOMOTOR MEANS MOUNTED ON SAID MACHINE IN POSITION TO OPERATE SAID PREPOSITIONED UNLATCH MEANS TO DISENGAGE SAID LATCH MEANS TO PERMIT SEPARATION OF SAID AUGER SECTION FROM SAID ROTARY MINING ASSEMBLY.
References Cited (Backward Citations)
US2190081A
Cited
US2474360A
Cited
US2607603A
Cited
US2588901A
Cited
US2846093A
Cited
US2764397A
Cited
US2951693A
Cited
US2979320A
Cited
US2969243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |