| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a door which is constituted by using an extruded material wherein a hollow part is formed between front-side and backside plates, and which prevents a locking implement from being unlocked by an operation of a thumb turn arranged on an indoor side. <P>SOLUTION: Left and right stile materials 3, an inside vertical member 5 and an outside vertical member 6 are composed of the extruded materials (e.g. aluminum sections) wherein the hollow parts are formed among the front-side and backside plates 3a, 5a and 6a; ribs 3c, 5c and 6c orthogonal to the front-side and backside plates 3a, 5a and 6a are each integrally formed among the front-side and backside plates 3a, 5a and 6a; and the hollow parts are divided into sections small enough to prevent the entry of a person's hand. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
