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    • 2. 发明授权
    • Crossarm systems and methods
    • 十字架系统和方法
    • US07007438B1
    • 2006-03-07
    • US10254412
    • 2002-09-24
    • Scott D. ShieldsJohn R. FerlinJohn L. Clark
    • Scott D. ShieldsJohn R. FerlinJohn L. Clark
    • E04C3/30
    • E04C3/14E04C3/18H02G7/20Y10T29/49616Y10T29/49623Y10T29/49625Y10T403/4974
    • A crossarm system adapted to support power lines from a vertical pole. The crossarm system comprises a wooden crossarm member and first and second nail end plates. The wooden crossarm member defines upper, lower, inner, and outer surfaces and first and second end surfaces, a main bore, a plurality of pin bores, and at least one brace bore. Each nail end plate comprises a plate member defining an inner surface and an outer surface and a plurality of nail projections extending from the inner surface of the plate member. Each nail projection defines a width dimension. In use, the first and second nail end plates are displaced towards the first and second end surfaces, respectively, such that the nail projections enter the wooden crossarm member. The nail projections are arranged such that the width dimensions substantially prevent splitting of the ends of the crossarm member.
    • 适于支撑来自垂直极的电力线的十字系统。 十字系统包括木制横梁构件和第一和第二钉子端板。 木制横梁构件限定上,下,内和外表面以及第一和第二端面,主孔,多个销孔和至少一个支撑孔。 每个钉子端板包括限定内表面和外表面的板构件和从板构件的内表面延伸的多个钉突出部。 每个钉子突出部分定义一个宽度尺寸。 在使用中,第一和第二钉子端板分别朝着第一和第二端面移动,使得指甲突出部进入木制横梁构件。 钉突起被布置成使得宽度尺寸基本上防止了分叉部件的端部。