US4063424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for constructing a foundation in soft soil formations
Assignee: Takenaka Komuten Co Ltd
•
Filing: 1976-09-07
•
Granted: 1977-12-20
•
Expires: 1996-09-07
Abstract
Abstract The present invention relates to a device for constructing a tubular pile foundation in soft soil formations. Where in use, the device is suspended into the soft soil from a crane or a derrick on the earth or a working barge off shore. The device for stabilizing a body of the soft soil comprises a machine box holding driving means, driving shaft means connected to said drive means, agitating barrel means for stirring the soft soil disposed at the lower end of said driving shaft means, said agitating barrel means having a plurality of agitating blades, and a chemical hardener feeder system for injecting the hardener into the soft soil to form solidified tubular piles, said chemical hardener feeder system including swivel joints, delivery pipes and injection nozzles. The device can be moved upward and downward in course of constructing tubular solid piles in situ by agitating and mixing the soil with the hardener to provide the high bearing capacity to the soil layers.
Inventors
- 👤 Atsushi Takagi
- 👤 Hiroyuki Kuroiwa
- 👤 Masao Miyaguchi
- 👤 Tateo Kawamura
- 👤 Yoshihiro Ishikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:52
CPC Classifications
E; E02; E02D; E02D3/00; E02D3/12; E02D3/126; E02D5/00; E02D5/22; E02D5/34; E02D5/38; E02D5/40
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
170 words
A device for constructing a tubular pile foundation in soft soil formations comprising: a machine box in which drive means is accepted; said drive means including a motor and at least one gear reducer; driving shaft means connected to said gear reducer; barrel means disposed at the lower end of said driving shaft means; a plurality of blades for agitating the soil in annular shape arranged on the inner and outer faces of said agitating barrel means; swivel joint means disposed beneath said machine box; pipe means adjacent to and parallel with said driving shaft means for delivering chemical hardener, said pipe means being connected to said swivel joint means and extending to the lower end of said barrel means; and nozzle means formed at the tip end opening of said pipe means for injecting chemical hardener into the soil; wherein the device is used to construct a tubular pile foundation in the soft soil formations with individual tubular piles or jointed tubular piles each having an annular cross section.
Claim 2
Independent Claim
170 words
A device for constructing a tubular pile foundation in soft soil formations comprising: a machine box in which drive means is accepted; said drive means including a motor and at least one gear reducer; driving shaft means connected to said gear reducer; barrel means disposed at the lower end of said driving shaft means; a plurality of blades for agitating the soil in annular shape arranged on the inner and outer faces of said agitating barrel means; swivel joint means disposed beneath said machine box; pipe means adjacent to and parallel with said driving shaft means for delivering chemical hardener, said pipe means being connected to said swivel joint means and extending to the lower end of said barrel means; and nozzle means formed at the tip end opening of said pipe means for injecting chemical hardener into the soil; wherein the device is used to construct a tubular pile foundation in the soft soil formations with individual tubular piles or jointed tubular piles each having an annular cross section.
Claim 3
Dependent Claim
33 words
A device as claimed in claim 1, wherein said driving shaft means includes a plurality of tubular shafts, each of said tubular shafts having a diameter similar to the diameter of said barrel.
Claim 4
Dependent Claim
47 words
A device as claimed in claim 2, wherein said a plurality of tubular shafts consist of at least one pair of them and one of each paired shafts rotates in opposite direction to the other to eliminate reaction forces exerted by each driving shaft on the whole.
Claim 5
Dependent Claim
18 words
A device as claimed in claim 1, wherein said driving shaft means includes a plurality of rod-like shafts.
Claim 6
Dependent Claim
47 words
A device as claimed in claim 1, wherein said a plurality of rod-like shafts consist of at least one pair of them and one of each paired shafts rotates in opposite direction to the other to eliminate reaction forces exerted by each driving shaft on the whole.
Claim 7
Dependent Claim
32 words
A device as claimed in claim 1, further comprising second nozzle means communicating with said pipe means for delivering chemical hardener into the soil adjacent the upper end of said barrel means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |