Patent ID: 7950876

Claim:
Apparatus for placing steel pipe piling in the ground, comprising: a rotary drive mechanism guided for up and down movement, and including a rotary output shaft, a rotary output member on said rotary output shaft, said rotary output member and said rotary output shaft having a common axis of rotation, and splines between the rotary output member and the rotary output shaft, said splines transferring rotation from the rotary output shaft to the rotary output member, and permitting the rotary output member to move axially up and down along the rotary output shaft; a rotary socket wrench attachment for said rotary output member, said rotary socket wrench attachment having an upper end mounting flange, a lower end socket wrench, and a reduced diameter neck axially between the mounting flange and the socket wrench, the socket wrench has an axial socket including internal wrench flats; an array of bolt fasteners surrounding the axis of rotation radially outwardly from the axial socket, said fasteners connecting the mounting flange of the socket wrench attachment to the rotary output member; and a rotary steel piling section having an upper end portion fitable into the socket wrench socket, said upper end portion including wrench flats adapted to engage the wrench flats in the socket wrench socket.