Abstract: A perpetual calendar clock includes an outer case that has a month window, a date window, a day-of-the-week window, and a clock window formed on the surface thereof. The clock includes a rotatory wheel set, a driving apparatuses, a clock-control unit, and a battery set, which are all fixed within the hollow outer case. The rotatory wheel set has a month wheel, a date wheel, and a day-of-the-week wheel, which, respectively, are aligned to the month window, the date window, and the day-of-the-week window of the outer case. Also, the clock-control unit is aligned to the clock window. The clock-control unit sends a signal for controlling and actuating deflecting rods, micro switches, and touch switches of the driving apparatuses so that the driving apparatuses act with the buses on a flexible circuit board disposed within one of the wheels; then, another control signal is sent to another wheel.
Abstract: A perpetual calendar structure comprising an outer casing, an interior frame, a driver, a clock control and a power source including a battery, in which the outer casing has windows for display of date, month, weekday and time, the interior frame in incorporated with a date display set, a month display set, and a weekday display set each aligning with their respective windows, the clock control is aligned with the time display window, and is used to give a signal at the end of each rotation of a cycle of 12-hour period to control the driver to cause a weekday driver to turn the weekday display set to next plate showing a weekday and A.M. or P.M., a date driver to turn the date display set to next plate showing a date after every two weekday plates are turned, and a month driver to turn the month display set to next plate showing a month after 31 date display plates are turned automatically without the need of manual control.
Abstract: This invention is a combination of known elements for a new use. This is an adaptation of the old shadow light principle coupled with time to cause three different light apertures to be aligned in a lighted window effect, thereby indicating a previously programmed marking to remind the owner of hourly, daily or weekly radio, television programs, appointments or meetings.