US Patent 8077552 Visual alert device

A visual alert device includes a keypad for a user to enter a primary follow-up time period for which a user desires to be visually reminded of its progressive expiration. Based on the entered primary follow-up time period, the visual alert device computes a preliminary and a final follow-up time value, which are associated with a level of response priority that is visually represented by the illumination of corresponding illuminable color segments. Thus, when a timer of the visual alert device reaches each of the preliminary follow-up time value, the primary follow-up time period, and the final follow-up time value, the corresponding color segments are illuminated to indicate the current response priority level.