Patent ID: 7938372

Claim:
A 6-axis, tray positioning device comprising: a substantially vertical cylindrically shaped mast; an arm provided with a substantially oval, “D” shape, square, or elliptical cross-section; a cross-fitting comprising at least two holes at a substantially right angle to each other and which connects said arm to said mast in overlap fashion at a substantially right angle and which allows said arm to be positioned longitudinally and radially relative to said mast; said arm fits into said cross-fitting such that the major dimension of the arm's cross-section is a slip fit with a mating cross-fitting hole; a hand-screw provided in said cross-fitting and oriented at substantially a right angle to said arm for the purpose of adjustably engaging said arm; said hand-screw adjusts the rotational angle limits and friction of said arm within said cross-fitting; said arm, cross-fitting and hand-screw are sized to provide desired tray tilt limits about said arm and tilt angle adjustment of a tray within said tilt limits; a hub pivotally attached to one end of said arm through a hole in said arm by a pivot-screw such that pivot friction between said hub and said arm is adjustable by varying the tightness of said pivot-screw; a tray rotationally attached to said hub such that the tray may be rotated 360 degrees about said hub.