04197855 is referenced by 64 patents and cites 6 patents.

In the illustrated embodiment, a field generator may be arranged on the body or at an interval therefrom, and produces a defined irregular field. For detecting the field flux a first surface with a plurality of sensor elements is provided, at least a part of which is distributed in two lines running parallel to each other and coupled electrically differentially together. At an interval from the first surface there is provided a second surface, parallel thereto, with further, correspondingly arranged sensor lines. The sensor lines of both surfaces run parallel to one another; the differential signals of the line pair of the first surface are electrically differentially linked to the differential signals of the line pair of the second surface. The device is in particular intended for measuring the location, the attitude and/or the change in location or, respectively, attitude of the jaw or of a tooth of a patient. Thus information may be provided with respect to three degrees of freedom of both translational and rotational movement.

Title
Device for measuring the location, the attitude and/or the change in location or, respectively, attitude of a rigid body in space
Application Number
5/887654
Publication Number
4197855
Application Date
March 17, 1978
Publication Date
April 15, 1980
Inventor
Arthur Lewin
Johannesburg
ZA
Agent
Hill Van Santen Steadman Chiara & Simpson
Assignee
Siemens Aktiengesellschaft
DE
IPC
A61B 5/10
A61B 5/06
A61B 5/05
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