发明名称 Stabilizer support for extension ladder
摘要 A stabilizer support for extension ladder having a pair of frame members. A pair of spring loaded telescoping extension legs, one of each disposed within each of the frame members. A plurality of adjustment mechanisms and hinges. A pair of adjustment feet having non-skid frictional engagement surfaces. Each of the adjustment feet configured to rotate about an axis of one of the hinges. A lateral support member disposed upon and longitudinally traversing between an inner wall of each frame member. The support member having a medially disposed pivot. A spring loaded adjustable rung support disposed upon the pivot. A pair of mounting plates disposed on an upper end of each of the frame members. A hinging surface configured to angularly adjust within a slit of the upper end. A mounting surface configured to engage a mounting member of a ladder.
申请公布号 US9033104(B1) 申请公布日期 2015.05.19
申请号 US201414282962 申请日期 2014.05.20
申请人 发明人 Calloway James A.
分类号 E06C7/42 主分类号 E06C7/42
代理机构 Crossley Patent Law 代理人 Crossley Patent Law
主权项 1. A stabilizer support for extension ladder comprising: a mirror image pair of hollow parallel frame members having a first frame member and a second frame member, each frame member having an upper end, a lower end, and an inner wall; a slit is disposed upon the upper end of each frame member; a lateral support member medially disposed upon and longitudinally traversing between the inner wall of each frame member, the lateral support member perpendicular to each frame member; a pivot medially disposed upon the lateral support member, the pivot configured to rotate about a longitudinal axis of the lateral support member; an adjustable rung support having a hollow cylinder and a telescoping cylindrical extension member, the cylindrical extension member is medially disposed upon the pivot, the cylindrical extension member is also telescopingly disposed within and engaged with the hollow cylinder, the hollow cylinder has a proximal end and a distal end, the rung support is configured to extend upon an adjustment of the cylindrical extension member within the hollow cylinder; a plurality of adjustment mechanisms, one of the plurality of adjustment mechanisms disposed upon the proximal end of the hollow cylinder, the adjustment mechanism disposed upon the proximal end of the hollow cylinder configured to reversibly secure the adjustment of the cylindrical extension member within the hollow cylinder; a rung engagement member disposed upon the distal end of the hollow cylinder, the rung engagement member configured to frictionally fixedly engage a rung of a ladder; a plurality of hinges; a mirror image pair of load bearing telescoping extension legs, each extension leg having a bottom end; each respective extension leg slidingly engaged with one of the parallel frame members, each respective extension leg configured to adjust within one of the parallel frame members, one of the plurality of hinges disposed upon the bottom end of each of the extension legs; at least one of the plurality of adjustment mechanisms disposed upon each of the respective frame members, each of the adjustment mechanisms disposed upon the frame members configured to reversibly secure the adjustment of the respective extension leg within the respective parallel frame member; a mirror image pair of adjustment feet, each of the respective adjustment feet disposed upon the respective hinge of the bottom end of one of each of the extension legs, each of the adjustment feet configured to angularly adjust, each of the adjustment feet having a frictional engagement surface; one of the plurality of hinges disposed upon the upper end of each of the frame members; and a mirror image pair of mounting plates, each of the mounting plates having a mounting surface and a hinging surface, the hinging surface of one of each of the respective mounting plates disposed upon the respective hinge of the upper end of one of each of the frame members, the hinging surface of each of the mounting plates configured to angularly adjust within the slit of the upper end of each of the respective frame members.
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