Abstract
This paper describes the simple and safe fixation method of a Judo tatami on a gymnasium floor, regardless of the floor's size. A gym is frequently used for Judo competition and practice. Through a simple process, this fixed equipment unit, named Tome-Taro, can set up tatami that precisely corresponds to the size and shape of a gymnasium floor. Experimental results at a Judo competition and training camp revealed that all tatami could be installed and securely fixed in place during only a week's time. In addition, the gym's floor surface suffered no damage during the tatami's installation, because the Tome-Taro fixation unit is made of foam urethane, which will also improve the safety of the Judo competitors. This fixed equipment unit is registered by intellectual property rights (copyright No.230467) and utility model (No.3138192). It is being commercially marketed by the Ishii Chemical Industry Co., Ltd. as the simple Judo tatami installation unit “Dobashi's Tome-Taro”.
