Abstract: A thermistor comprising a semiconductor ceramic of a mixed crystal oxide composed of rare-earth metals having the composition?Y.sub.a Gd.sub.b Sm.sub.c Tb.sub.d !.sub.2 O.sub.3,wherein0.ltoreq.a.ltoreq.0.9950.ltoreq.b.ltoreq.0.9950.ltoreq.c.ltoreq.0.9950.01.ltoreq.d.ltoreq.0.995, anda=0 if b=0, orb=0 if a=0,has a high-temperature stability and can be used at temperatures up to 1100.degree. C.

Abstract: In a magnetic cylinder for holding printing plates and the like in which magnetic elements are located and held in place in recesses formed on the outer surface of the cylinder, a thin substantially non-magnetic foraminate layer is located at the bottom of the recesses and the magnetic elements rest against the foraminate layer.

Abstract: An electromagnetically-operating Jacquard control device has an electromagnet (1) with a magnetic core (3), an armature (8) and a limit stop (14) for each controlling element (16) to be controlled. The limit stop can optionally be brought into the movement path of a hook (18) attached to the controlling element (16). Two lovers (5, 11) are provided, the first bearing the armature (8) and the second bearing the limit stop (14). These two levers are coupled to one another with positive engagement such that the forces are transmitted substantially perpendicularly to the plane formed by the limit stop (14) and the swivel pin (12) of the second lever (11). This enables wear-related incorrect operation to be avoided.

Abstract: A pressure sensitive sparkless switching device includes a layer of piezoresistive cellular polymer foam, at least two conductive layers, and an insulative spacer element having at least one opening. When pressure is applied to the device the piezoresistive foam disposes itself through the opening of the spacer element and makes electrical contact between the conductive layers. The resistance of the piezoresistive foam varies with the amount of pressure applied to provide an analog as well as on-off function. The device may also provide multiple switching, and shear detection capabilities.