| 摘要 |
PCT No. PCT/SE96/00698 Sec. 371 Date Jan. 15, 1998 Sec. 102(e) Date Jan. 15, 1998 PCT Filed May 30, 1996 PCT Pub. No. WO97/04205 PCT Pub. Date Feb. 6, 1997A wooden frame for window or door leaves is composed of frame pieces, each one of which comprising a first part facing outwards in a wall opening and a second part facing inwards. The outer, first part of the individual frame piece is delimited by two surfaces converging outwardly and at an acute angle relative to each other, said surfaces emanating from dividing cuts made in an initial log, said cuts extending radially from the area of the center of the log. In that way, the annual rings in the wood material are orientated in such a way that imagined tangents to individual annual rings cut through said surfaces substantially perpendicularly to the planes of the surfaces and older annual rings being situated closest to the free, narrow edge of the part. |
