Device for taking an impression and visualizing said impression

Details Device for taking an impression and visualizing said impression Device for taking an impression and visualizing said impression

1976-01-19

1977-04-19

Aegerter, Richard E.

Geometrical instruments

Area integrators

Electrical

33174PA, G01B 728

Patent

active

040179788

ABSTRACT:
A multidetector is constituted by a lattice of N rods each having a ferromagnetic portion and slidably mounted within N coils forming the secondary windings of a transformer, each detector being constituted by a rod associated with a coil. The common primary circuit of the transformer is formed by a single coil which surrounds the N secondary windings and is supplied with alternating current of constant amplitude. The rods are brought into contact with an object for taking an impression of a portion of its external surface. The N voltages developed at the terminals of the N secondary coils are transmitted sequentially by a multiplexer to the screen of a storage oscilloscope so as to form the impression by means of N points, a coordinate of each point being a linear function of the voltage developed at the terminal of the corresponding secondary coil.

REFERENCES:
patent: 2569433 (1951-09-01), Highberg et al.
patent: 3733704 (1973-05-01), Farabaugh
patent: 3805036 (1974-04-01), Michaud et al.

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