Patent US1672123A successfully refreshed from Google Patents.
Patent US3839875A successfully refreshed from Google Patents.
US3839875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for driving piles
Assignee: Kumagai Gumi Co Ltd
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Filing: 1973-04-04
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Granted: 1974-10-08
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Expires: 1993-04-04
Abstract
Abstract An apparatus for driving a hollow pile comprising a rotatable shaft axially removably disposed in said pile and having first spray nozzle means provided at lower end thereof, means for supporting the shaft in said pile and axially removing it out of the pile, means for supplying pressurized fluid to said spray nozzle means to provide radially outwardly directed fluid spray, means for rotating said shaft when the fluid is sprayed through said nozzle means to remove earth below the lower end of the pile so that the pile can be driven into the earth, and further fluid spray nozzle means for provideing fluid spray to facilitate upward transportation of the removed earth. A novel method for driving a pile, which uses the aforementioned novel apparatus.
Inventors
- 👤 K Matsushita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:42
CPC Classifications
E; E02; E02D; E02D7/00; E02D7/24
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
211 words
An apparatus for driving a hollow cylindrical pile 1 into earth comprising a hollow tubular member 8 stationally but axially removably mounted within said pile, a hollow shaft 9 rotatably disposed in said hollow tubular member and having lower end projecting downwardly over said hollow tubular member and also over the lower end of said pile, the upper portion of said hollow shaft projecting over the upper end of said tubular member and extending through a bearing means 11 secured on said pile, nozzle means 3 mounted on the lower end of said hollow shaft and having at least one radially outwardly directed nozzle opening, a water supply tube 10 longitudinally extending within said hollow shaft and communicated at its lower end with said nozzle opening of said nozzle means and at its upper end with a source of pressurized water through a swivel joint 25, means 21,22,23,24 for rotating said hollow shaft relative to said tubular member, means for supplying water under pressure through said water supply tube to said nozzle means, and second nozzle means 15, 16 disposed within said pile and attached to said hollow tubular member for spraying air in radially outwardly direction thereby to prevent the interior of said pile from being clogged by the soil.
Claim 2
Independent Claim
211 words
An apparatus for driving a hollow cylindrical pile 1 into earth comprising a hollow tubular member 8 stationally but axially removably mounted within said pile, a hollow shaft 9 rotatably disposed in said hollow tubular member and having lower end projecting downwardly over said hollow tubular member and also over the lower end of said pile, the upper portion of said hollow shaft projecting over the upper end of said tubular member and extending through a bearing means 11 secured on said pile, nozzle means 3 mounted on the lower end of said hollow shaft and having at least one radially outwardly directed nozzle opening, a water supply tube 10 longitudinally extending within said hollow shaft and communicated at its lower end with said nozzle opening of said nozzle means and at its upper end with a source of pressurized water through a swivel joint 25, means 21,22,23,24 for rotating said hollow shaft relative to said tubular member, means for supplying water under pressure through said water supply tube to said nozzle means, and second nozzle means 15, 16 disposed within said pile and attached to said hollow tubular member for spraying air in radially outwardly direction thereby to prevent the interior of said pile from being clogged by the soil.
Claim 3
Dependent Claim
27 words
An apparauts according to claim 1 comprising means 2, 4, 5, 6, 13 for mounting the hollow tubular member 8 in the pile in an detachable manner.
References Cited (Backward Citations)
US890245A
Cited
US1024820A
Cited
US1024823A
Cited
US1065229A
Cited
US1493651A
Cited
US1905643A
Cited
US3081828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |