发明名称 Ladder standoff device
摘要 A standoff device and ladder designed for positioning with respect to a supporting structure, the standoff is temporarily and rigidly attached to the upper end of a ladder for the purpose of holding the ladder away from the structure against which the ladder is leaning to provide more stability and a comfortable distance between the user and the structure during tasks such as painting, power washing a house, working with gutters, carpentry, roofing, tree trimming and pruning. The standoff comprises a pivotal frame which is moveably and adjustably secured to a selected rung of the ladder with the pivotal movement limited by a chain, rope, strap, strut, telescoping member, or other holding element attached to a lower portion of the ladder such as a lower rung. The standoff device includes a frame having extendable legs with padded rollers journalled on the end in a “V-shape” for leaning against various shapes of vertical support structures such as walls of a building, columns or trees.
申请公布号 US8752672(B2) 申请公布日期 2014.06.17
申请号 US201012807450 申请日期 2010.09.07
申请人 发明人 Turner Christopher D.
分类号 E06C7/00 主分类号 E06C7/00
代理机构 Carrithers Law Office PLLC 代理人 Carrithers Law Office PLLC
主权项 1. A ladder in combination with a ladder stand-off stabilizer, the ladder stand-off stabilizer consisting of: a rung embracing square frame member, said square frame member including two parallel spaced apart first longitudinal tubular members permanently and directly attached to two parallel spaced apart second longitudinal cross members positioned transverse to said first longitudinal tubular members, said first longitudinal tubular members and said second longitudinal cross members forming said rung embracing square frame member; and two C-shaped rung embracing curved members respectively having a center of a major longitudinal length, each of said centers respectively connected directly to a major length of each of the first longitudinal tubular members at a respective distal end of said first longitudinal tubular members, said C-shaped rung embracing curved members coaxial to one another and respectively extending perpendicular to said first longitudinal members; and a rung embracing hook member pivotally and directly connected to a distal one of said second longitudinal cross members, said rung embracing hook member having a first section substantially encircling a circumference of the distal one of said second longitudinal cross members and the hook member having a second curved section having a tightening screw so that said hook member is capable of being rotated around and locked onto a rung of the ladder; and two stop members, each one of said two stop members respectively connected directly to and extending perpendicularly from an outer edge of each of the major lengths of the first longitudinal tubular members at a location proximate to a respective one of said rung embracing curved members, said two stop members being for cooperatively engaging a rail of the ladder and positioned to hold the stand-off stabilizer approximately perpendicular to the rail of the ladder while each of said C-shaped rung embracing curved members and said rung embracing hook member embrace the rung; and a clip directly attached to a proximal one of said second longitudinal cross members, a free end of said clip directly attached to a first end of a chain, said chain having a second end directly attached to a snap hook; and a base member including an inverted U-shaped frame member having a major length extending between two U-shaped frame ends, the base member including a pair of obtuse angled cross members respectively having a medial portion attached directly to a respective one of said U-shaped frame ends, each one of said pair of obtuse angled cross members having a linear inner portion directly attached to a linear outer portion to form an obtuse angle, each respective one of said inner portions angled inwardly toward one another and said U-shaped frame member with respect to said outer portions, each respective one of said inner and outer portions coaxially journalled to a compressible roller in order to roll freely against a surface of a structure, said obtuse angled cross members being co-planar with said U-shaped frame member; and said base member having at least one pin and a pair of spaced apart parallel longitudinal extension members, said extension members directly attached perpendicularly to and co-planar with said inverted U-shaped frame member, said extension members telescopically extend within said first longitudinal tubular members for slidable telescoping engagement, said first longitudinal tubular members and said longitudinal extension members respectively have a plurality of parallel apertures capable of aligning in order to insert said at least one pin therethrough to hold said square frame member in a selected positions with respect to said base member.
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