发明名称 Ladder access system and method for using same
摘要 Embodiments of the disclosure may provide a ladder access system. The ladder access system may include a base having a clamp disposed proximal an excavation end thereof. The clamp may be configured to secure the base to an excavation support structure. A first side rail may be disposed on a first side of the base and a second side rail may be disposed on a second side of the base. The ladder access system may also include a gate disposed at a surface end of the base and extending between the first and second side rails. The ladder access system may further include a ladder support disposed proximal the excavation end of the base and extending from the first or second side rail, the ladder support being configured to uphold an upper end of a ladder disposed in an excavation and leaning thereupon.
申请公布号 US9004227(B2) 申请公布日期 2015.04.14
申请号 US201113012913 申请日期 2011.01.25
申请人 National Trench Safety, LLC 发明人 Chilton Ronald W.
分类号 E06C7/48;E06C7/18 主分类号 E06C7/48
代理机构 Edmonds & Nolte, P.C. 代理人 Edmonds & Nolte, P.C.
主权项 1. A ladder access system, comprising: a base having at least four sides, wherein a first side is opposite a second side and a third side is opposite a fourth side; a clamp mechanism mounted on and beneath the first side of the base, the clamp mechanism comprising: two generally parallel rails defining a mounting surface therebetween; anda biasing device for moving to or from one of the generally parallel rails; a first side rail disposed on the third side of the base; a second side rail disposed on the fourth side of the base, a pair of generally vertical posts extending from the third side of the base, a pair of generally vertical posts extending from the fourth side of the base, a first generally horizontal top post coupled to and extending between the generally vertical posts on the third side of the base; a second generally horizontal top post coupled to and extending between the generally vertical posts on the fourth side of the base; a gate disposed adjacent the second side of the base and mounted on one of the generally vertical posts distal from the clamp, the gate configured to control access to and from the base; a grated floor disposed on the base; and a ladder support arm mounted to and extending from the first or second generally horizontal top post adjacent the first side of the base, wherein the ladder support arm is substantially orthogonal to the parallel rails of the clamp mechanism, wherein the ladder support arm is an elongated member that telescopically slides in and out of one of the first or second generally horizontal top posts.
地址 Houston TX US