Dynamotive, LLC

Other

Lothar E Kiesewetter

Harald Zillessen

Carl H Tyren

Carl Tyren

Fredy Olsson

A label for marking and remote detection of objects has a capsular housing (,) of a material, which in non-magnetic, electrically non-conductive as well as resistant against external influence, the housing consisting of a lower portion (,) and a cover (,), between which a cavity (,) is formed, and at least one elongated sensor element (,) arranged in the cavity (,), the sensor element being made from an amorphous magneto-elastic material with high magneto-mechanical coupling. On all its interior surfaces facing the cavity (,), the housing (,) is provided with fine bristles or fibers (,), the number, length and density of which have been selected for receiving the sensor element (,) in a way, such that the sensor element (,) when resonating, will maintain its straightness and will be allowed to oscillate in the longitudinal direction thereof essentially free from losses, with no harmful influence from bending or torsional forces, and with no risk of losing energy due to friction or contact with the inside of the housing (,).

Label for marking and remote detection of objects

Clamping device for magnetostrictive bodies

Method and device for making a first body (8), having a magnetostrictive properties, and a second body (6), against which said first body is in bearing contact with a certain grip between the contact surfaces, to move with respect to each other while substantially maintaining said grip. According to the invention a magnetic field is made to sequentially influence only one of adjacent partial sections of said magnetostrictive body (8), starting from the front end of the body as seen in the intended direction of movement. The magnetic field is adjusted so that the respective partial section under the influence of the magnetic field undergoes an increase in length, at the same time being subject to a contraction in the transverse direction which is big enough in order to decrease, preferably eliminate the grip between the bodies. The device includes a rod (8) of magnetostrictive material, which is clamped within a tubular body (6), one end of which being attached to a rigid supporting structure. The magnetostrictive rod (8) is connected to a bar, a link etc. having its opposite end connected to the element to be actuated by the movement of the rod in the tubular body (6).

Method and device in magnetostrictive motion systems

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Berlin, Germany

Lothar E Kiesewetter