Height-adjustable support arm for appliance support system

摘要

The support arm in the form of a parallelogram rocker arm swivel mounted on horizontal axes is mounted between two vertical head-pieces. One parallelogram arm is in the form of an extruded hollow profile; the second parallelogram arm is in the form of a guide bar (16,17) axially parallel with the extruded hollow profile (15). The hollow profile contains the cables for the appliances. The open side of the U-shaped sectioned hollow profile is closed by a cover (19). The interior of the U-section contains an intermediate piece (18) dividing it into a duct (28) for the support arm mechanism and a duct for the cables (29).