Importance

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Abstract

An operating room light with ceiling suspension is provided with a shaft protruding from the ceiling and containing internal electrical conductors, the shaft being enveloped in its end region by a support body provided on its outer circumference with slip rings for establishing electrical connections between the shaft and the conductors contained in a swivel arm; the swivel arm is provided with a swivel arm head as part of a rotary joint, which envelops the support body and which contains on its barrel-shaped inside slip ring pickups for making contact with the slip rings of the support body; viewed in axial direction, the support body is provided at both of its ends with bearing bushes functioning as sliding bearings, the upper bearing bush supporting an axial bearing ring that bears thereon to hold the swivel arm head; the support body together with the bearing bushes is secured against radial and axial shifting by means of threaded pins passed through openings in the pivot as well as by a locking ring held by means of annular slot in the end region of the shaft. By virtue of conical transition regions, it is possible to slip the swivel arm head with its slip ring pickups onto the support body in simple manner, thus providing advantages in particular for assembly and maintenance and for cases in which swivel arms are mounted one above the other.

First Claim