Dental articulators and clutch fabrication

Claim 1

A DENTAL ARTICULATOR HAVING FIRST AND SECOND CAST SUPPORTING MEMBERS ADAPTED TO SUPPORT AN UPPER AND A LOWER DENTAL CAST OF A PATIENT''S TEETH BY AN UPPER AND LOWER DENTAL CAST SUPPORTS ATTACHED TO EACH OF SAID MEMBERS, AT LEAST ONE OF SAID CAST SUPPORTS COMPRISING A FIRST PLATE REMOVABLY ATTACHED TO ONE OF SAID MEMBERS, FIRST AND SECOND SOCKETS HAVING CONCAVE WALLS IN SAID PLATE AT EACH END THEREOF, BEARINGS IN EACH OF SAID SOCKETS AND MATING WITH SAID CONCAVE WALLS, FIRST AND SECOND RODS EXTENDING THROUGH BORES IN SAID BEARINGS, MEANS TO LOCK SAID BEARINGS IN SAID SOCKETS, MEANS TO LOCK SAID RODS IN SAID BEARINGS; A SECOND PLATE HAVING SIMILARLY DISPOSED SOCKETS AND BEARINGS, SAID RODS ALSO EXTENDING INTO THE BEARINGS OF SAID SECOND PLATE, MEANS TO LOCK SAID BEARINGS IN SAID SECOND PLATE; AND MEANS TO REMOVABLY ATTACH A DENTAL CAST TO SAID SECOND PLATE.