A method and apparatus for securing an encapsulated transducer to an
interface cup for attachment with a machine includes an interface cup
configured substantially as a cylinder defined by a cylinder wall and a
bottom wall closing a bottom of the cylinder, the cylinder including a
first bore corresponding to an inner diameter defined by the cylinder
wall, the first bore corresponding to an outside diameter of the plastic
encapsulated transducer; a second bore extending through opposing sides
defining an exterior of the cylinder wall transverse to the first bore;
an undercut in the first bore intersecting the second bore; a cylindrical
overmold surrounding the interface cup having the plastic encapsulated
transducer disposed in the first bore, wherein injection of plastic flows
axially of the overmold toward the interface cup and circumferentially
into the undercut via the second bore, forming a solid interference
therebetween upon solidification restricting axial movement therebetween.