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US 4,301,874 AGranted
Pile or sheet-pile driver
OwnerKeichiro Majimainventor
Life of this patent
Estimating the term…
Abstract
Pile or sheet-pile driver comprising a vertically movable member to be vertically driven by a hydraulic cylinder supporting a vertically movable chucking device having a pair of chucking fingers to be brought close to or away from each other by the hydraulic cylinder; an elastic member and longitudinal vibrators installed between the vertically movable member and the chucking fingers. The chucking device is designed such that a pile or a sheet-pile held upright can be placed sidewise into position between the chucking fingers.
Claims13
Pile or sheet-pile driver comprising:
- a mount;
- a plurality of hydraulic cylinders fitted upright to said mount;
- a vertically movable member, fitted to piston rods jutting upwardly from the top of said hydraulic cylinders, which extends in the horizontal direction;
- a chucking device with a pair of chucking fingers movable toward or away from each other in the lateral direction, said chucking device being attached to said vertically movable member via a guide rod and free to move vertically;
- an elastic member installed between said vertically movable member and said chucking device such that said chucking device can be urged downwardly;
- a hydraulic cylinder mounted on said device to move said chucking fingers towards or away from each other;
- and at least one longitudinal vibrator attached to said vertically movable member at a position between said vertically movable member and said chucking device;
- said chucking device being located so that a pile held upright can be inserted sidewise into position between said two chucking fingers. PG,20
5 more elements
Dependencies are inferred from the claim text.