Patent ID: 7351012
Filing Date: 2008-04-01
Classification: E02D

Abstract:
1. A hand-operable rotational drive apparatus for imparting rotation to a shaft of a single screw piling, said apparatus comprising a housing having a cylindrical pipe coupling adapted to receive said shaft of said screw piling therethrough, said shaft being provided with two or more spaced apart pairs of diametrically aligned holes, said cylindrical pipe coupling being a cylindrical sleeve coupling provided with diametrically aligned slots, a removable connector constituted by a lock pin extending across said diametrically aligned slots in said pipe coupling and a pair of said diametrically aligned holes in said shaft for securing said pipe coupling to said shaft at different positions along said shaft, a rotational drive within said housing for imparting rotation to said coupling when driven by a drive motor immovably secured to said housing, an elongated rod having an attaching end secured directly to said housing with said rod oriented transversely of said shaft, said elongated rod having an opposed end to be grasped by a first user person remotely of said housing to arrest said housing during operation of said rotational drive by said drive motor whereby to permit said rotational drive to transmit a rotational drive force to said coupling to impart said rotation to said shaft, and said drive motor being a hydraulic drive motor, a pair of hydraulic hoses connected to said hydraulic drive motor at one end, said hydraulic hoses being connected at an opposed end to a remote hydraulic pump, and operable valve means to operate said drive motor and control the direction of rotation of said drive motor; said attaching end of said elongated rod having a connecting fork securable to a rod connector, secured to said housing, by a detachable connecting pin and wherein said connecting pin has a longitudinal axis which extends transversely to a longitudinal axis of said shaft.