US 7,622,918 B2 · Solenoid magentometer

Abstract

A magnetometer assembly (22) for a torque transducer (10) includes inner and outer coils (34,38,36,40) wrapped and supported on a bobbin assembly (22). The bobbin assembly (22) includes upper and lower axial portions (21,23) divided by a middle flange (28). The middle flange (28) includes a plurality of notches (32) that are disposed equal angularly about an axis (18). A plurality of corresponding magnetic strips (42) extend axially through each of the notches (32) and through the entire length of the magnetometer assembly (22). The magnetic strips (42) are disposed between an inner and outer coil assembly (34,38,36,40) and becomes saturated in the presence of a magnetic field. Divergent magnetic fields created by torque applied to a torque transducer element (12) disposed within the magnetometer assembly (22) and detected and measured to provide an indication of applied torque.

Claims10

Dependent claims

A magnetometer assembly comprising:

a first inner coil and a first outer coil disposed coaxially and electrically connected to one another;
a second inner coil and as second outer coil disposed coaxially with said second inner coil and electrically connected to one another;
a plurality of circumferentially spaced apart magnetic strips disposed parallel to said axis between said at least one inner coil and said at least one outer coil, wherein each of the plurality of magnetic strips is separated from each other and intermittently spaced about the axis wherein each of the plurality of metal strips extends the axial length between the first inner and outer coils to the second inner and outer coils.

Dependencies are inferred from the claim text.

Solenoid magentometer

Life of this patent

Solenoid magentometer

Life of this patent

Abstract

Claims10