Abstract: A prosthetic acetabular cup assembly, for receiving a ball attached to a femur, including components interlocked via a locking mechanism that includes a retaining ring fabricated at least in part using a polyaryletherketone material, such as PEEK. The locking mechanism is designed to meet predefined constraints such as assuring that substantially all motion is eliminated between assembled parts, assuring further that push-in/pull-out forces of assembly are within generally accepted industry standards, etc.

Abstract: A prosthetic acetabular cup assembly, for receiving a ball attached to a femur, including components interlocked via a locking mechanism that includes a retaining ring fabricated at least in part using a polyaryletherketone material, such as PEEK. The locking mechanism is designed to meet predefined constraints such as assuring that substantially all motion is eliminated between assembled parts, assuring further that push-in/pull-out forces of assembly are within generally accepted industry standards, etc.

Abstract: Am amplifier filter system for speech therapy applications. This apparatus combines a direct channel amplifier and two band pass filter amplifiers such that selected phonemes (speech sounds) of the spoken word can be enhanced so that a speaker can be taught corrections for various articulation deficiencies. Through the choice of optimum center frequencies in one-octave bandpass filters for various phonemes of a given language, a selected portion of the acoustic spectrum within the language can be enhanced to achieve this result. The apparatus is highly portable, light weight and is affordable. It provides for inputs from microphones and/or tape recorders, and outputs to earphones, loudspeakers, vibrators, and/or tape recorders. Because of the unique design of this unit, it is "user friendly" thus making it useful in both the presence of a clinician and by a client during his or her own therapy.