Patent US3763654A successfully refreshed from Google Patents.
US3763654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pile driving and drawing apparatus
Assignee: Individual
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Filing: 1972-09-13
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Granted: 1973-10-09
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Expires: 1992-09-13
Abstract
Abstract A pile driving and drawing apparatus in which a plurality of drawing and driving wedges are disposed in a substantially hollow cylindrical member having an upwardly tapered and a downwardly tapered inner peripheral surface portion so as to be intimately engageable with these inner peripheral surface portions while releasably holding a pile during drawing operation and driving operation respectively. Means are further provided for causing rotation of the pile being driven and drawn into and out of the earth.
Inventors
- 👤 K Matsushita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:18
CPC Classifications
E; E02; E02D; E02D11/00; E02D13/00; E02D7/00; E02D7/20; E02D7/24; E02D7/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
390 words
A pile driving and drawing apparatus comprising a frame Member (5) securely mounted at a central portion of a caterpillar, an annular member (6) mounted to an upper annular supporting portion (20) of said frame member (5) so as to be rotatable relative to said frame member (5), said annular member (6) having a ratchet (6'') formed on its outer peripheral surface, at least one hydraulic jack (9) pivoted to said frame member (5) so that said ratchet (6'') can be engaged by a feed pawl (8) mounted at the free end of the piston rod of said hydraulic jack (9), a substantially cylindrical member (13) having a hollow inner space having an upwardly tapered inner peripheral surface portion (13a) and a downwardly tapered inner peripheral surface portion (13b), a plurality of hydraulic jacks (14) depending from the lower surface of said annular member (6), said cylindrical member (13) being connected to the lower end of the piston rods of said hydraulic jacks (14), a plurality of wedges (11, 10) intimately engageable with said upwardly and downwardly tapered inner peripheral surface portions (13a, 13b) within the hollow inner space of said cylindrical member (13) during pile drawing operation and driving operation respectively, and a plurality of hydraulic jacks (12) securely fixed to the outer peripheral surface of said cylindrical member (13) and each having a pair of piston rods extending in opposite directions therefrom, said wedges (11, 10) being operatively connected to the upper and lower ends of the piston rods of said hydraulic jacks (12) through lever means (23), said frame member (5) receiving a hollow cylindrical pile (1) along substantially the vertical axis thereof, said pile (1) being provided with at least one obliquely downwardly directed nozzle (4) at the lower end thereof, and said nozzle (4) being connected to a source of water under high pressure by a high-pressure water supply conduit (3) extending axially through said pile (1) and by a high-pressure water supply hose (2) connected to said conduit (3), whereby earth and sand can be loosened by the jet of water under high pressure and said pile (1) releasably held within said cylindrical member (13) by the wedge effect can be driven into or drawn from the earth under rotation without requiring any work for the removal and discharge of the earth and sand.
Claim 2
Dependent Claim
390 words
A pile driving and drawing apparatus comprising a frame Member (5) securely mounted at a central portion of a caterpillar, an annular member (6) mounted to an upper annular supporting portion (20) of said frame member (5) so as to be rotatable relative to said frame member (5), said annular member (6) having a ratchet (6'') formed on its outer peripheral surface, at least one hydraulic jack (9) pivoted to said frame member (5) so that said ratchet (6'') can be engaged by a feed pawl (8) mounted at the free end of the piston rod of said hydraulic jack (9), a substantially cylindrical member (13) having a hollow inner space having an upwardly tapered inner peripheral surface portion (13a) and a downwardly tapered inner peripheral surface portion (13b), a plurality of hydraulic jacks (14) depending from the lower surface of said annular member (6), said cylindrical member (13) being connected to the lower end of the piston rods of said hydraulic jacks (14), a plurality of wedges (11, 10) intimately engageable with said upwardly and downwardly tapered inner peripheral surface portions (13a, 13b) within the hollow inner space of said cylindrical member (13) during pile drawing operation and driving operation respectively, and a plurality of hydraulic jacks (12) securely fixed to the outer peripheral surface of said cylindrical member (13) and each having a pair of piston rods extending in opposite directions therefrom, said wedges (11, 10) being operatively connected to the upper and lower ends of the piston rods of said hydraulic jacks (12) through lever means (23), said frame member (5) receiving a hollow cylindrical pile (1) along substantially the vertical axis thereof, said pile (1) being provided with at least one obliquely downwardly directed nozzle (4) at the lower end thereof, and said nozzle (4) being connected to a source of water under high pressure by a high-pressure water supply conduit (3) extending axially through said pile (1) and by a high-pressure water supply hose (2) connected to said conduit (3), whereby earth and sand can be loosened by the jet of water under high pressure and said pile (1) releasably held within said cylindrical member (13) by the wedge effect can be driven into or drawn from the earth under rotation without requiring any work for the removal and discharge of the earth and sand.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |