Patent ID: 7048439

Claim:
A dental x-ray assembly for a dental operatory, said dental x-ray assembly having articulating positioning arm members for an x-ray tube assembly said articulating positioning arm members connected within said dental x-ray assembly by adjustable linkage mounting members for receiving shaft members associated with said articulating positioning arm members, for articulating and positioning said articulating positioning arm members relative to each other, each of said adjustable linkage mounting members comprised of a housing member mounted within a chamber of said adjustable linkage mounting members for receiving a shaft member of said articulating positioning arm member, and a means for adjustable frictional engagement with said shaft member in response to a means rotatably disposed on said housing member, said chamber is cylindrically-shaped and said housing member is cylindrically-shaped with a U-shaped end portion for receiving said shaft of said articulating positioning arm member, said means for frictionally engaging said shaft member is a cylindrically-shaped brake shoe member having a semi-circular end surface for cooperating with a circumference of said shaft member.