Dentistry – Apparatus – Work support
Patent
1993-03-09
1993-12-07
O'Connor, Cary E.
Dentistry
Apparatus
Work support
A61C 1100
Patent
active
052678580
ABSTRACT:
The present invention provides an average movement articulator capable of being set for free movement, having lower frame, and an upper frame capable of being moved longitudinally, vertically and laterally and being turned about a longitudinal axis relative to the lower frame and of being turned about a lateral axis for free movement in analyzing occlusion, restoring decayed teeth and making crown bridges. The articulator substantially comprises a) a lower frame holding a lower working cast on its upper surface; b) an upper frame disposed above the lower frame and holding an upper working cast on its lower surface; c) a pair of support struts standing upright at the opposite ends, respectively, of the rear end of the lower frame; d) a transverse member supported on the respective upper ends of the support struts so as to be swingable about a lateral axis and longitudinally movable; and e) resilient connecting members resiliently connecting the rear end of the upper frame to the transverse member so that the upper frame is able to move vertically, laterally and longitudinally and to turn relative to the transverse member; wherein the upper frame is able to move longitudinally, vertically and laterally and to turn about a longitudinal axis relative to the lower frame.
REFERENCES:
patent: 682668 (1901-09-01), Bruce
patent: 1517922 (1924-12-01), Stanley
patent: 2445639 (1948-07-01), Sandhofer
patent: 2670538 (1954-03-01), Thompson
patent: 4175325 (1979-11-01), Beckwith
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