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:
Apr. 15, 1980
Filed:
Feb. 05, 1979
Timo Nieminen, Helsinki, FI;
Den-Tal-Ez Mfg. Co., West Des Moines, IA (US);
Abstract
This invention relates to a motion mechanism for moving an X-ray film in a panoramic X-ray machine in a predetermined pattern and rate of travel relative to a source of radiation. The mechanism includes a cassette holder on which is carried a rotatable rod or roller driven by a traction wheel, a lever assembly for changing the drive angle between the traction wheel and the rod and a moving or rotatable supporting column or structure on which the motion mechanism is mounted. The panoramic X-ray machine also has a radiation source suspended from one end of the supporting structure at a position opposite the cassette holder. The object o patient to be radiographed is placed between the radiation source and the cassette holder and the supporting structure is rotated at a selected rotational speed about the object.