发明名称 Hatchway safety grab post safety barrier and grate
摘要 A lift-up safety grab post mechanism for rooftop hatchway curbs having a mounting bracket on a hatchway curb and having an elongate opening having a pivot bolt for upward and downward grab post movement. A lift-up grab post has a pivot opening receiving the pivot bolt and having a stop member fixed thereto. The lift-up grab post is rotationally moveable between an upstanding position and a horizontal position relative to the roof hatchway curb. The mounting bracket defines a receiver seat and further defines a stop shoulder adjacent the receiver seat that prevents rotational movement of the grab post until the grab post has been raised from said receiver seat to a position above the stop shoulder.
申请公布号 US2010326769(A1) 申请公布日期 2010.12.30
申请号 US20100803343 申请日期 2010.06.24
申请人 CUCCURULLO JOSEPH;CUCCURULLO DANTE 发明人 CUCCURULLO JOSEPH;CUCCURULLO DANTE
分类号 E06C9/08;E04H17/02;E04H17/14;E04H17/16;E04H17/20;E06C9/00 主分类号 E06C9/08
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