公开(公告)号：US5293727A

公开(公告)日：1994-03-15

申请号：US796561

申请日：1991-11-22

申请人： Kenichi Yoshimoto ,  Kazuhiro Sakamoto ,  Tadashi Akiyama ,  Hirofumi Takai ,  Tomomi Nagano ,  Mitsuji Hashimoto ,  Kozo Tamamura

发明人： Kenichi Yoshimoto ,  Kazuhiro Sakamoto ,  Tadashi Akiyama ,  Hirofumi Takai ,  Tomomi Nagano ,  Mitsuji Hashimoto ,  Kozo Tamamura

IPC分类号： E04D1/26 ,  E04D1/00

CPC分类号： E04D1/265

摘要： A plate roofing material is divided into an exterior portion which is exposed when a roof is covered with a plate roofing material and an overlap portion which is concealed under an exterior portion of a plate roofing material superimposed on the overlap portion of the plate roofing material. At least one longitudinal groove is formed in the surface of the exterior portion. The longitudinal groove has wide side surface parts alternating with narrow side surface parts with sidewalls formed of a plurality of stepped portions. The longitudinal groove has a linear bottom part having an approximately constant depth and is approximately V-shaped in cross section.

摘要翻译： 板屋顶材料被分成当屋顶被屋顶材料覆盖时被暴露的外部部分和隐藏在叠加在板屋顶材料的重叠部分上的板屋顶材料的外部下方的重叠部分。 至少一个纵向槽形成在外部部分的表面中。 纵向槽具有宽的侧表面部分，与具有由多个阶梯部分形成的侧壁的窄侧表面部分交替。 纵向槽具有大致恒定的深度的直线底部，并且截面为大致V形。