A keycap assembly for using in a keyboard is provided. The keycap assembly includes a keycap having a lever fitting slot disposed in an inner wall thereof, and a lever having a curved portion in contact with the inner wall of the keycap for forming a downward slanting angle with respect to the inner...http://www.google.com/patents/US6632039?utm_source=gb-gplus-sharePatent US6632039 - Keycap assembly
