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:
Nov. 15, 1977
Filed:
Nov. 03, 1975
Friedrich M Forster, D-7410 Reutlingen, DT;
Other;
Abstract
The force which is to act upon the tooth depends only on the field strength of an applied magnetic field, upon the length and number of the electrical conductors through which the magnetic field passes and upon the current flowing through the conductors. The rigid medium can alter its position relative to the examination head without current added to the area of constant field intensity altering the force. In this manner, it is also possible to achieve good examination results even without complicated, troublesome and expensive creation of a fixed point by means of a mouth insert. The head of the test subject is held still by means of a head or chin support. The transducer head can be alternatively retained in a support or even by hand. With the aid of an electronic function generator, any desired time function for the force acting on the tooth, regardless of whether a sinusoidal, rectangular, stepped or sawtooth increase in force is desired is produced.