Articulator
OwnerUrs Martyinventor
Life of this patent
Estimating the term…
Abstract
An articulator in which all natural chewing movements (articulation) and the biting movement (occlusion) shall be simulated. To this end a fixture is positively guided by means of a spring loaded elongated shaft relative to a base in three degrees of freedom. The positive movement proceeds via the longitudinal shaft as well as slanted surfaces extending obliquely relative to the longitudinal shaft and additionally a cam member including a cam follower is provided which determine the path of movement in the three axes of the articulation. In order to allow the occlusion the fixture can be pivoted relative to the base around a lateral shaft.
Claims9
An improved articulator having a base including a support for a model of a lower jaw, said support carried by said base, having a support for a model of an upper jaw, which support is mounted to pivot around a lateral shaft extending within a fixture which is universally movable relative to said base, having further a pressing means including a spring and acting along an axis extending perpendicularly to said lateral shaft and operative to press said base and said fixture at their respective supporting surfaces together such that due to a form closed abutment of base and fixture of said supporting surfaces a defined relative position between base and fixture is reached, which said pivotable support for a model of an upper jaw is movably guided relative to said base by means of a cam and a cam follower, which said support for a model of an upper jaw is carried in a pivoting arm supported by means of said lateral shaft in a bearing pedestal, said bearing pedestal and said pivoting arm forming together said fixture;
- in which said pivoting arm is guided movably relative to said bearing pedestal and laterally to said lateral shaft against the force of a second spring, and in which said cam and said cam follower are located between said pivoting arm and said base.
Dependencies are inferred from the claim text.