Device for measuring the location, the attitude and/or a change

Details Device for measuring the location, the attitude and/or a change Device for measuring the location, the attitude and/or a change

1980-11-03

1983-05-31

Ruggiero, Joseph F.

Boots, shoes, and leggings

128777, 433 69, G06G 760, A61B 505

Patent

active

043864058

ABSTRACT:
The illustrated embodiment employs a field generator, preferably a magnetic field generator, field flux pick-ups arranged at an interval therefrom, as well as an electronic device for the three-dimensional comprehension and evaluation of electrical signals arising in a field flux or a change of field flux. For displaying random points (P.sub.2 . . . P.sub.n) of the lower jaw (1), means are provided which identify the geometrical attitude of the points with respect to a fixed-body coordinate system (x.sub.o, y.sub.o, Z.sub.o) allocated to the lower jaw whose origin and rotational center is the measuring point (P.sub.1). Further, a coordinate converter is provided which converts the coordinates (x.sub.o, y.sub.o, z.sub.o) related to the lower jaw into the coordinates (.DELTA.x.sub.2, .DELTA.y.sub.22 .DELTA.z.sub.2) of the stationary coordinate system (X, Y, Z). Further, summing amplifiers are provided which add the adjustment magnitudes (.DELTA.x.sub.2, .DELTA.y.sub.2, .DELTA.z.sub.2) of the jaw-related coordinates to the coordinates (x.sub.1, y.sub.1, z.sub.1) of the measuring point (P.sub.1). The device is particularly employed in gnathography.

REFERENCES:
patent: 3390459 (1968-07-01), Seidenberg
patent: 3822694 (1974-07-01), Mills
patent: 3883954 (1975-05-01), Simmering et al.
patent: 4197855 (1980-04-01), Lewin
patent: 4303077 (1981-12-01), Lewin et al.
patent: 4303919 (1981-12-01), Dimeff
McCutcheon et al., "Video Scanning System for Measurement of Lip and Jaw Motion, " J. Acoust. Soc. Am., vol. 61, No. 4 (Apr. 1977) pp. 1051-1055.

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