Patent ID: 7726613

Claim:
A water blast gun support for automatically reducing the thrust of the water blast apparatus felt by the operator by converting signals from an operator to a pair of actuators fixed in position and attached to the support structure, said water blast gun support comprising: a stand; a substantially vertical control arm; a joystick attached at the bottom end of said substantially vertical control arm; a horizontal overhead beam, rotatably mounted to said stand; a first motion producing actuator coupled between said control arm and said horizontal overhead beam to move said control arm forward and backward; a second motion producing actuator coupled between said stand and said horizontal overhead beam to rotate said beam in both clockwise and counterclockwise directions; and a control unit having an actuator input member, said member being rigidly attached at the bottom end of said vertical control arm and operatively coupled to said first motion producing actuator and said second motion producing, said control unit comprising: a substantially spherical bearing which mounts the actuator input member to said control unit to provide a requisite freedom of movement of said actuator member relative to said control unit; wherein said joystick is rigidly attached to said actuator input member so that movement of said joystick results in movement of said first and second motion producing actuators to controllably direct said water blast gun both to the right and left and up and down directions based upon said operator signals.