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    • 10. 发明授权
    • Lightweight cementitious roofing, tapered and recessed
    • 轻质水泥屋面,锥形和凹陷
    • US5210989A
    • 1993-05-18
    • US881845
    • 1992-05-12
    • Karl W. Jakel
    • Karl W. Jakel
    • E04D1/16
    • E04D1/16
    • A roof shake having an elongated body with top and bottom surfaces that extend lengthwise of the body, the body having laterally spaced, elongated edges, and opposite ends. The body bottom surfaces have a taper angled to flatly engage the roof near an upper end of the shake, whereby the shake may be nailed to the roof in spaced relation to the end so that the taper engagement with the roof provides leverage resisting wind up-lift forces exerted on the shake near a lower end of the shake installed in spaced relation to the roof. The bottom surface has hollow shallow cavities to reduce weight. The length and width are such as to reduce number of shakes in installation.
    • 一种屋顶振动器,其具有细长体,其具有沿主体纵向延伸的顶表面和底表面,主体具有横向间隔开的细长边缘和相对端部。 身体底部表面具有倾斜角度以在靠近震动的上端平坦地接合屋顶的位置,由此摇动可以以与顶端间隔开的关系钉在屋顶上,使得与屋顶的锥形接合提供了抵抗上风的杠杆作用, 施加在靠近摇架下端的摇晃上的提升力以与屋顶隔开的关系安装。 底面具有中空的浅腔,以减轻重量。 长度和宽度可以减少安装时的振动次数。