| 摘要 |
PROBLEM TO BE SOLVED: To develop a manufacturing method of a vacuum exhaust tool capable of reducing the number of parts for easy assembling operation and unlikely to produce a defective vacuum exhaust tool causing air leakage. SOLUTION: A glass bottle or a glass tube is formed, a side frame member is formed by cutting a barrel part of the glass bottle or the glass tube in a ring shape and a bottom face member is adhered to this to form a box shape. As the side frame member is integrally formed as a ring shape, the number of parts is smaller than a vacuum exhaust tool manufactured by a conventional manufacturing method, assembling operation becomes easy and the possibility of air leakage becomes extremely small as there is no seam of the side face member unlike a conventional vacuum exhaust tool. COPYRIGHT: (C)2008,JPO&INPIT
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