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公开(公告)号：US4768617A
公开(公告)日：1988-09-06
申请号：US74412
申请日：1987-07-16
摘要： An adjustable stairway is disclosed that is supported on a retractable, wheel mounted carriage. A locking mechanism selectively maintains the carriage in a lowered, ground engaging position for easy maneuvering of the stairway. The weight of the stairway urges the carriage into a raised position when the locking mechanism is released, allowing the stairway to rest on stationary foot pads.
摘要翻译： 公开了一种可调节的楼梯，其被支撑在可缩回的车轮安装的托架上。 锁定机构选择性地将托架保持在降低的地面接合位置，以便于楼梯的操纵。 当锁定机构被释放时，楼梯的重量促使滑架升至升高位置，从而使楼梯能够靠在固定的脚垫上。
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公开(公告)号：US5263550A
公开(公告)日：1993-11-23
申请号：US898555
申请日：1992-06-15
申请人： Michael D. Jines , Dale A. Sellner
发明人： Michael D. Jines , Dale A. Sellner
CPC分类号： E04H3/24 , E04G21/3233 , Y10S256/06
摘要： The present invention provides an adjustable, portable railing system for use with raised platforms or the like. The railing system broadly includes a plurality of generally horizontal rails and generally vertical uprights for supporting the rails. The uprights include a standard carrying at least one railing bracket, a platform clamp mechanism and a platform clamp operator. The elongated post-like standard has an upper crown end, a lower base end and a generally central longitudinal axis. The crown end supports the railing bracket and the base end is associated with the platform clamp mechanism. The platform clamp operator has a generally central longitudinal axis that is closely adjacent and substantially parallel to the axis of the standard.
摘要翻译： 本发明提供一种可调节的便携式栏杆系统，用于升高的平台等。 栏杆系统广泛地包括多个大致水平的轨道和用于支撑轨道的大致垂直的立柱。 立柱包括载有至少一个栏杆支架，平台夹紧机构和平台夹具操作器的标准。 细长的柱状标准具有上冠端，下基端和大致中心的纵向轴线。 冠端部支撑栏杆支架，底座与平台夹紧机构相连。 平台夹具操作器具有与标准的轴线紧密相邻且基本平行的大致中心的纵向轴线。
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