Abstract: A toilet bowl flushing device capable of discharging automatically a large amount of flushing water to the bowl immediately after termination of use of the bowl and a small amount of water continuously from the beginning of the use until a predetermined time has elapsed after the large amount discharge. Valve means for controlling the amount of water provided to the bowl includes a small-amount water discharging means and a large-amount water discharging means, and is coupled to a control means including a timer means suitably energizing the small-amount and large-amount water discharging means so that an auxiliary bowl flushing is performed with a small amount of flushing water to prevent sticking of filth to the bowl during the use, a main bowl flushing is realized with a large amount of flushing water immediately after the use, and a small amount of flushing water is kept discharged still after the main flushing to avoid any generation of water hammering phenomenon.

Abstract: A control apparatus of an automatic door is adapted such that a time period required for opening a door to a full-opened state is stored and a target time period required for opening the door to a half-opened state or to a 3/4-opened state is determined by evaluating the stored time period for opening the door to a full-opened state. In an operation mode for opening the door to a half-opened state or a 3/4-opened state, comparison is made of a lapse time period of the current operation for opening the door and the target time period is calculated, in advance whereupon a motor is brought to a stop upon coincidence thereof.