Abstract: A torque measuring apparatus including a magnetic detection device for non-contact measuring strains in a rotating shaft of ferromagnetic material which is adapted to transmit torques, the detected strains being used to determine the levels of transmitted torques, the magnetic detection device including an exciting coil device wound around the outer periphery of the rotating shaft and adapted to magnetize the rotating shaft in its axial direction; a detecting core ring device in the form of an integral unit which includes a plurality of detecting cores arranged around the circumferential area of the rotating shaft to be magnetized equidistantly to form a ring, each of the detecting cores forming an independent magnetic circuit between the detecting core and the rotating shaft; and at least one magnetic detecting element for detecting a variable magnetic flux in each of the detecting cores depending on the level of the transmitted torque; whereby the strains in the rotating shaft can be non-contact measured ba

Abstract: A torque sensor for detecting variation in the drive torque of an automobile comprises an excitation coil wound on an excitation core and a detection coil wound on a detection core. The coils and cores are inserted into a chamber formed within a bearing for supporting a drive shaft and having an opening along the sliding surface of the bearing. The poles of the excitation core and the poles of the detection core are respectively disposed at prescribed clearances from the surface of the drive shaft in such manner that the poles of the detection core intersect the excitation core between its poles, whereby variation in drive torque is detected as magnetostriction.

Abstract: A pressure transducer includes a semiconductor diaphragm of a predetermined conductivity having a strain sensitive region capable of being elastically deformed by means of the external pressure applied thereto, a fixing region having a high degree of rigidity, central and peripheral strain sensitive elements disposed along the crystallographic directions thereof and exhibiting high sensitivity and which are respectively insulatingly disposed within the vicinity of the central and peripheral portions of the strain sensitive region of the diaphragm, lead portions insulatingly disposed upon the diaphragm and extending from the strain sensitive region to one side of an end portion in the fixing region for transmitting electrical signals from the sensitive elements, the leads being connected to the central and peripheral strain sensitive elements at one end thereof in order to collectively form a bridge circuit, and electrodes respectively provided upon the other end portions of the lead portions and within the en