The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 27, 1987
Filed:
Nov. 29, 1983
Toshio Nara, Odawara, JP;
Sumiya Hobo, Tokyo, JP;
Masao Kashiwada, Ebina, JP;
Motoyuki Totsuka, Atsugi, JP;
Takao Hoshiai, Tokyo, JP;
Katsutoshi Umetani, Hiratsuka, JP;
Keisuke Akamatsu, Isehara, JP;
Tomohide Inada, Yamato, JP;
Hisao Takayama, Tokyo, JP;
Nippon Avionics Co., Ltd., Tokyo, JP;
Abstract
An apparatus for measuring the three-dimensional position and attitude of upper and lower clutches attached on patient's maxillary and mandibular teeth for computerized measurement of the mandibular movements necessary for the fabrication of dental prostheses is disclosed. The apparatus includes a part of a sphere that is fixed to the mandible and which is marked with a reference line and a part of another sphere of substantially the same radius as that of the above sphere, which is fixed to the maxilla and which is also marked with a reference line. The surfaces of the two spheres are caused to slide against each other, with their centers being in alignment, thereby achieving the measurement of the relative attitude of the two spheres.