Patent ID: 7665875

Claim:
An articulating dental operatory light comprising: a) an electrically powered light source; b) an articulating mount having a mount housing and an interior space within the mount housing; c) a ball member engageable with the electrically powered light source and contained within the mount housing; d) at least one aperture extending through the ball member; e) at least one electrical cable disposed within the at least one aperture; f) a socket member contained within the mount housing, the socket member pivotally and rotatably cooperating with the ball member, whereby the ball member is pivotable on multiple axes relative to the socket member and is rotatable relative to the socket member; g) a link shaft having a first end and a keyed second end; h) a keyed recess defined by the aperture through the ball member, the keyed recess being engageable with and cooperating with the keyed second end of the link shaft; i) a first rotational stop member connected to the first end of the link shaft at a location remote from the ball member and socket member; and j) a second rotational stop member located within the mount housing, the second stop member positioned and adapted to interfere with the first rotational stop member whereby rotation of the first rotational stop member, and correspondingly the ball member, about a longitudinal axis of the link shaft is limited by the interference between the first rotational stop member and the second rotational stop member, thereby minimizing twisting damage to the at least one electrical cable.