US3255592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for discharging concrete grout to form piles
Assignee: Individual
•
Filing: 1961-05-01
•
Granted: 1966-06-14
•
Expires: 1981-05-01
Abstract
No abstract record available.
Inventors
- 👤 Herman L Moor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:50
CPC Classifications
E; E02; E02D; E02D15/00; E02D15/02; E02D15/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
IN COMBINATION AN EARTH AUGER HAVING A HOLLOW STEM PROVIDED WITH A DISCHARGE APERTURE ADJACENT ITS BOTTON END, POWER DRIVEN MEANS FOR HOISTING SAID AUGER, POWER DRIVEN MEANS FOR SUPPLYING GROUT TO SAID AUGER STEM UNDER PRESSURE, MEANS FOR DISCHARGING COMPRESSED AIR INTO SAID STEM ADJACENT SAID DICHARGE APERTURE, PRESSURE RESPONSIVE MEANS FOR MODULATING ONE OF SAID POWER DRIVEN MEANS INCLUDING A MODULATING VALVE, A FIRST MEANS CONNECTED TO SAID MEANS FOR DISCHARGING AIR TO SAID STEM
Claim 2
Dependent Claim
77 words
IN COMBINATION AN EARTH AUGER HAVING A HOLLOW STEM PROVIDED WITH A DISCHARGE APERTURE ADJACENT ITS BOTTON END, POWER DRIVEN MEANS FOR HOISTING SAID AUGER, POWER DRIVEN MEANS FOR SUPPLYING GROUT TO SAID AUGER STEM UNDER PRESSURE, MEANS FOR DISCHARGING COMPRESSED AIR INTO SAID STEM ADJACENT SAID DICHARGE APERTURE, PRESSURE RESPONSIVE MEANS FOR MODULATING ONE OF SAID POWER DRIVEN MEANS INCLUDING A MODULATING VALVE, A FIRST MEANS CONNECTED TO SAID MEANS FOR DISCHARGING AIR TO SAID STEM
References Cited (Backward Citations)
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Cited
US2673012A
Cited
US2729067A
Cited
US2952131A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |