Patent ID: 6401559
Filing Date: 2002-06-11
Classification: B62D,Y10T

Abstract:
A differential for a dolly, for shootings in the TV and movie fields, comprising a first, inlet axis, coupled with a selection and control bar, provided on the dolly, for the selection of one among the two steering wheels, four steering wheels or crab configuration, said inlet axis being provided with motion transmission means for the two steering wheel configuration, with motion transmission means for the four steering wheel configuration, and with motion transmission means for the crab configuration; a motion output axis; and two lateral axes, respectively for the transmission to the left wheel and to the right wheel, said inlet axis and said output axis providing central movable axis to selectively engage said transmission means, coupled at the bottom with rocking lever means, transmitting the position of the movable central axis of the inlet axis to the movable central axis of the output axis, and wherein said inlet axis, output axis, and transmission means are arranged on a support so as to establish a gear-to-gear transmission relationship, and wherein said left and right lateral axes and said transmission means are further arranged on the support so as to establish a gear-to-gear transmission relationship.