DEVICE FOR MANUFACTURE OF MAGNETIC SECTIONAL NEGATIVE Russian patent published in 1997 - IPC

FIELD: medical engineering; prosthetics. SUBSTANCE: device has two pairs of pole plates with polarities S and N in working condition, core hinge-connecting the plates of pairs, electric coil the turns of which are arranged in frame, and molding material guard. Similar pole plates of pairs are hinge-connected to each other at one of their end faces. They can rotate relative to hinge axle. Core may be either sectional or solid. Sectional core is represented by bushing with axle made in the form of cylinder which is coupled to each main pole plate along cylindrical surface and to each auxiliary pole plate along flat surface. Faces of bushing may come in contact with main pole plates. Washer made of non-ferromagnetic material may be installed between similar pole plates at points of their hinge connection. Circular grooves to accommodate balls may be made on hinge surfaces of plates of pairs facing each other. Washers are provided with respective openings for balls. Electric coil frame may be manufactured of ferromagnetic material. One of end faces of cores may be provided with support for installation of device on base. EFFECT: manufacture of negatives of simple and complicated forms. 8 cl, 4 dwg