An assembly that includes a target component mounted for rotation about an axis, a sensor mounted adjacent the inner member and directed toward the inner member to measure the rotational speed of the target component and an outer component interposed between the sensor and the target component. Low magnetic permeability of the outer component is assured by appropriate selection of the material, maintaining the concentration of martensite in the outer component below a reference concentration as ...

Balls are interposed between respective raceway surfaces of inner and outer ring members, and a seal apparatus is provided between shoulder portions of the inner and outer ring members. The seal apparatus comprises an outer ring-side seal ring fixed to the outer ring member, and an inner ring-side seal ring fixed to the inner ring member. A pulser ring is fixed to a ring-shaped core metal of the inner ring-side seal ring. In an outer diameter side of the ring-shaped core metal of the outer ring-...

An inductive transmitter has a housing 1 within which two pole shoes 8, a permanent magnet 7 arranged between the pole shoes 8 and a coil 6 surrounding the permanent magnet 7 and the pole shoes 8 are arranged. The two ends of the coil 6 are connected with an output connection from which a cable 16 is conducted outwardly from the housing 1. The electric components, such as the coil 6, output connection pieces 9, 9' and output connection contacts 23, 23', are arranged in the watertight inside of t...

An oil lubricated rotating hub (14) and stationary spindle (12) assembly includes an oil bath seal (16, 16') for establishing a dynamic sealing interface between the hub (14) and spindle (12). A wheel sensor assembly includes a variable reluctance senor (54) targeted at an encoder ring (56, 56') which is integrated into the oil bath seal (16, 16'). The encoder ring (56, 56') is of the permanent magnet type including a plurality of magnetically polarized sectors alternating between North and Sout...

A vehicle wheel speed sensor of the type using permanent magnets to generate a magnetic field having a magnetic path which is conducted through a plurality of teeth on a rotor into a plurality of teeth on a stator with relative motion therebetween where the frequency of the change in the magnetic reluctance varies at a frequency proportional to the wheel speed. The stator is mounted to the end of the axle spindle by way of a securing bolt so that the stator can be easily removed for service with...

A variable reluctance sensor is disclosed as adapted for sensing the rate of revolution of a toothed wheel of magnetic material. The sensor has at least two magnets disposed side by side. One of the magnet has a first pole (e.g. S pole) disposed opposite the toothed wheel, and the other magnet has a second pole (e.g. N pole) disposed opposite the toothed wheel. The second pole of the first mentioned magnet and the first pole of the second magnet are both held against a magnetic core around which...

An electromagnetic sensor assembly for use with a rotor to sense the velocity of a rotating body and wherein the electromagnetic sensor includes gauge means projecting from the sensor in an amount corresponding to the desired magnetic gap with the gauge means cooperating with the face of the rotor during assembly automatically to adjust the sensor to a final assembled position which establishes the precise gap irrespective of dimensional variations which may be present.

An assembly that includes a target component mounted for rotation about an axis, a sensor mounted adjacent the inner member and directed toward the inner member to measure the rotational speed of the target component and an outer component interposed between the sensor and the target component. Low magnetic permeability of the outer component is assured by appropriate selection of the material, maintaining the concentration of martensite in the outer component below a reference concentration as ...

This specification discloses an apparatus and method for providing electrically distinguishable signals occurring as a function of the position of a moving element. It is possible to identify a sub group of electrical signals from the remaining electrical signals or from the entire group. The electrical signals can be used altogether to determine a variable such as revolutions per minute of the movable element or, particular ones of the electrically distinguishable signals can be used for initia...

A wheel speed sensor comprises a non-magnetic spindle, a rotor of magnetic material carried by the spindle, a stator surrounding the rotor, a permanent magnet, a stationary hub of magnetic material in which the spindle is rotatably mounted, and a wire coil disposed for induction by current by changing magnetic fields caused by rotation of the rotor. The rotor and the hub are superimposed over the total length of the rotor, irrespective of the relative axial positions of the rotor and the hub due...