Instrument stand

An instrument stand equipped with means for fitting an instrument to the stand, and for allowing the instrument to be oriented, in relation to its position when at rest, around one geometrical axis X of the instrument, around a second geometrical axis Y of the same instrument, intersecting the axis X at a fixed point, and around a third geometrical axis Z of the same instrument, perpendicular to the axis Y and also passing through the point of intersection of axes X and Y, said stand comprising:

• a head which rotates on a shaft that coincides with the axis X when the instrument is at rest, said head including means for orienting the instrument around axes Y and Z;
• orientation means comprising two runners equipped with respective pairs of runner wheels which run along separate tracks located on opposite sides of said head, said tracks presenting circular profiles defined around the axis Y, the treads of the runner wheels being elastically flexible, one of the pairs of wheels on each runner being positioned at a greater distance from the axis Y than the other of the pair of wheels on the same runner, each of said tracks comprising two portions, one portion guiding each of the pair of wheels on each runner, said portions being positioned at different distances from the axis Y and presenting different radii with respect to said axis,
• each runner comprising a revolving shaft mounted with friction contact and extending along axis Z towards the point of intersection of all three axes, said revolving shafts being fitted with means for attaching the instrument to the stand;
• and
• a friction contact assembly for enabling said head to rotate around the axis X.