This invention pertains to novel fibers made of .alpha.(1.fwdarw.;3) polysaccharides, and a process for their production. The fibers of the invention have "cotton-like" properties but can be produced as continuous filaments on a year-round basis. The fibers are useful in textile applications.

A magnetic refrigeration apparatus (10) is modular in design, so that housing modules (14) are alternately stacked with superconducting magnet pairs (24). Each module (14) has a wheel (16) that is rotated through the module (14), the wheel (16) having cutout regions (18) into which elements (20) of magnetic material are inserted. Each cutout region has two elements (20) separated by a wave spring, the wave spring biasing the elements (20) against the housing module (14) so that the elements (14)...

A multitubular bag for electrodes of electric batteries, made of a one-piece double fabric (1a) establishing a plurality of parallel pipes (3) in its inside, the double fabric (1a) of bag (1) showing transversal high tenacity and high tensile strength multifilament yarns (4) laid in a direction transversal to the main development direction of pipes (2), and longitudinal high porosity yarns (5) obtained starting from synthetic fiber staple laid in longitudinal direction, that is laid in a directi...

The invention relates to a plate-type heat exchanger comprising a stack of double-walled heat exchanger plates (30 32) which are permanently interconnected and each include two plate members (33, 34) having a central heat transfer portion (35) and an edge portion (36) bent upwardly with respect to the plane of the central heat transfer portion (35), separate flow passage spaces for at least two heat exchange fluids being defined between the double-walled heat exchanger plates (30 32), the two pl...

A heating device for the electromagnetic induction heating of a metal strip traveling in a specified direction. The device includes at least one electric coil arranged opposite at least one of the large surfaces of the strip so as to heat the latter by transverse magnetic flux induction, each coil being associated with at least one magnetic circuit. Each circuit is divided into a plurality of magnetically independent bars arranged parallel to the direction of travel of the strip. The bars may mo...

A system for use in preparing a dental prosthesis comprises a signal generator for generating an electrical signal encoding geometric specifications of a dental prosthesis, the specifications including dimensions and shape of a tooth preparation at a dental site at which the prosthesis is to be affixed and configuration of the prosthesis. The system further comprises a robot mechanism for placing a first mold component and a second mold component, selected in accordance with the electrical signa...