Clamp assemblies for driving caissons into the earth

Details Clamp assemblies for driving caissons into the earth Clamp assemblies for driving caissons into the earth

1995-03-21

1996-08-13

Novosad, Stephen J.

Hydraulic and earth engineering

Foundation

Columnar structure

405231, 405249, 1731621, E21B 724, E02D 718

Patent

active

055449794

ABSTRACT:
A clamp assembly for attaching a pile to a device for inserting and/or extracting the pile. The clamp assembly has a fixed gripping assembly and a movable gripping assembly. The fixed gripping assembly is rigidly attached to a housing. The movable gripping assembly is rotatably attached to a pivot arm that is pivotably attached to the housing. The pile is placed between the gripping assemblies and a piston causes the pivot arm to rotate such that the pile is gripped between the gripping assemblies. The movable gripping assembly rotates relative to the pivot arm into a desirable position relative to the pile as it engages the pile to increase the ability of the clamp assembly to grip the pile. An anvil formed on the top of the clamp assembly facilitates attachment of the clamp assembly to the pile driving and/or extracting device and alleviates damage to the bolts used to attach the clamp assembly to the pile driving and/or extracting device.

REFERENCES:
patent: 2126933 (1938-08-01), Stone et al.
patent: 3096075 (1963-07-01), Brown
patent: 3797570 (1974-03-01), Leutwyler
patent: 3828864 (1974-08-01), Haverkamp et al.
patent: 4567952 (1986-02-01), Lemaire et al.
patent: 5092399 (1992-03-01), Lang
patent: 5117925 (1992-06-01), White
patent: 5263544 (1993-11-01), White
patent: 5388652 (1995-02-01), Smith

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