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US 4,058,895 AGranted
Dental articulator
AssigneeHeinz Mack
InventorsHeinz Mack, Gunter Singer
Life of this patent
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AssigneeHeinz Mack
InventorsHeinz Mack, Gunter Singer
Estimating the term…
This invention relates a dental articulator comprising substantially a lower frame portion with means for securing the mounting plate for the lower jaw model and a supporting platform for the incisor guide pin, a vertical frame portion rigidly connected to the lower frame portion and having two balls serving as condyles which are mounted on two supporting stems, and an upper frame portion with the two radially rotatable ball sockets serving as fossae and including a rear ball guiding means and an inner ball guiding means angularly adjustable relative to the rear ball guiding means, the bearing shaft, the means for securing the mounting plate for the upper jaw model, and an adjustable incisor guide pin, in which the inner ball guiding means angularly adjustable relative to the rear ball guiding means constitutes an exchangeable, optionally grindable segment of a circle bearing against the circular inner wall of the ball socket, and a lockable slide serves to lock the ball in the corner formed by the rear ball guiding means, the angularly adjustable inner ball guiding means, and the upper ball guiding surface, which slide is arranged opposite or diagonally opposite the corner formed by the rear ball guiding means and the angularly adjustable inner ball guiding means such that after locking the end of the slide rests on the lower half of the ball.
A dental articulator comprising a lower frame portion with means for securing a mounting plate for the lower jaw model and a supporting platform or the incisor guide pin, a vertical frame portion rigidly connected to the lower frame portion and having two balls serving as condyles which are mounted on two supporting stems, and an upper frame portion with the two radially rotatable ball sockets serving as fossae and including a rear ball guiding means, and an inner ball guiding means which is angularly adjustable relative to the rear ball guiding means, a bearing shaft, means for securing a mounting plate for the upper jaw model to said upper frame portion, and an adjustable incisor guide pin, characterized in that the inner ball guiding means which is angularly adjustable relative to the rear ball guiding means comprises an exchangeable, optionally grindable segment of a circle bearing against a circular inner wall of the ball, and a lockable slide is provided which serves to lock the ball in the corner formed by the rear ball guiding means, the angularly adjustable inner ball guiding means, and an upper ball guiding surface, said slide being arranged opposite, or diagonally opposite, the corner formed by the rear ball guiding means and the angularly adjustable inner ball guiding means such that, after locking, one end of the slide rests on the lower half of the ball.
An apparatus for providing a firm connection between a frame member of a dental articulator including a supporting foot and a base plate for a transmission system on which said supporting foot rests, said apparatus comprising a block member including a base portion having a slot therein in which the base plate of a transmission plate is received, said block member including at least one bore located above said slot, and said apparatus further comprising an axially movable arm received in said bore and a spindle, carried by said arm, for engaging the frame member of the dental articulator.
Dependencies are inferred from the claim text.