Abstract: A method of cleaning a probe card with probe pins contaminated by testing residue. A cleaning wafer is provided and the uneven surface and the grooves thereon are used to polish surfaces of the probe pins. Two kinds of cleaning operations, which utilize smaller and larger accelerations driving the cleaning wafer, are performed. The cleaning operations utilizing the smaller acceleration are used to polish the surfaces of the probe pins and the cleaning operations utilizing the larger acceleration are used to smooth the uneven surfaces of the probe pins after the former polishing operations. In addition, the cleaning wafer is rotated by various rotation angles to obtain superior cleaning.

Abstract: A method of cleaning a probe card with probe pins contaminated by testing residue. A cleaning wafer is provided and the uneven surface and the grooves thereon are used to polish surfaces of the probe pins. Two kinds of cleaning operations, which utilize smaller and larger accelerations driving the cleaning wafer, are performed. The cleaning operations utilizing the smaller acceleration are used to polish the surfaces of the probe pins and the cleaning operations utilizing the larger acceleration are used to smooth the uneven surfaces of the probe pins after the former polishing operations. In addition, the cleaning wafer is rotated by various rotation angles to obtain superior cleaning.

Abstract: A size reduction apparatus and process for reducing the size of a heterogeneous or homogeneous article or articles using variable and interchangeable interior parts for varying article output size and an air handling system for introducing air and/or fluid into the process of size-reduction. The components of a heterogeneous article are separated and used to aid in the size-reduction process.

Abstract: An improved hand held dental instrument adapted for cleaning teeth is provided which, in its preferred form, comprises an elongated shaft and an angularly projected head, the head being provided with a longitudinal groove in the head's upper planar surface and being tapered so as to form a thin, flat tip suitable for deformation in a direction and manner to easily reach teeth crevices without sacrificing longitudinal rigidity of the head. The opposite end of this integrally formed device's shaft is provided with a second tapered tip, which may be similarly grooved, and is adapted for cleaning of tooth surfaces.