Ronald L Tate

US Patent:

44809956, Nov 6, 1984

Filed:

Sep 22, 1983

Appl. No.:

6/534967

Inventors:

Ronald L. Tate - Sylvania OH

International Classification:

A61C 1100

US Classification:

433 54

Abstract:

The present invention relates to an improved apparatus for use in fabricating orthodontic appliances. The apparatus includes a pair of spaced apart lower and upper horizontally extending arms. The lower arm is adapted to carry a lower dental casting and the upper arm is adapted to carry an upper dental casting in facing relationship with the lower dental casting. A pair of spaced apart parallel cylindrical guide shafts extend upwardly in a generally vertical direction from the lower arm. The upper arm is attached to a mounting device utilized to support the upper arm for vertical movement toward and away from the lower arm. The mounting device includes a pair of spaced apart cooperating guide apertures for slidably receiving the guide shafts. A locking screw is provided in the mounting device for frictionally engaging one of the guide shafts for releasably securing the upper arm in a selected vertical position relative to the lower arm. A reference stop member having a pair of apertures formed therein for slidably receiving the guide shafts is positioned on the guide shafts between the lower arm and the upper arm.