A sealing system for use with acoustic touchscreens is provided. The system includes a seal coupled to a frame, the frame being positioned directly over the acoustic touchscreen components, e.g., acoustic transducers, reflective arrays, etc. such that the seal prevents contamination of the underlying...http://www.google.de/patents/US6411287?utm_source=gb-gplus-sharePatent US6411287 - Stress seal for acoustic wave touchscreens
