| 摘要 |
<p>PCT No. PCT/SE84/00087 Sec. 371 Date Jan. 4, 1985 Sec. 102(e) Date Jan. 4, 1985 PCT Filed Mar. 9, 1984 PCT Pub. No. WO84/04366 PCT Pub. Date Nov. 8, 1984.Corner pieces for frames are used for joining together frame sides situated adjacent the corner piece. The frame sides are tubular or profile-shaped and adapted in their inner cavity to receive legs which are angularly arranged on the corner piece and interconnected by means of an intermediate part. Each leg consists of two parallel shanks and each shank is shaped so as to be complementary to the cavity of the frame side profile engaging the respective shank so that the shank can be inserted guidingly and with a certain friction in the cavity of the profile. The corner piece is composed of two identical corner parts interconnected by fastening means, the legs and the intermediate part of the corner piece having, on one hand, a first symmetry plane coinciding with the frame plane and, on the other hand, a second symmetry plane or bisector plane bisecting the angle between the legs of the corner piece. The second plane is perpendicular to the first symmetry plane.</p> |
