发明名称 Wall stand-off apparatus
摘要 A wall stand-off apparatus and method for supporting virtually any ladder adjacent to a substantially vertical surface. The novel wall stand-off apparatus of the present invention comprises a U-shaped support bar which forms two, substantially parallel legs. Each leg is provided with an extension member, such that the legs are individually adjustable in length. Two clamps are pivotally connected to the support bar. Each clamp comprises two movable, opposing jaws which are adapted to be attached to a portion of the ladder which is inserted therebetween. Each clamp includes a thumbscrew such that when a ladder's side rail or rung is inserted into the clamp, the thumbscrew may be tightened so as to firmly secure the clamp to the ladder. With both clamps properly secured to either the side rails or a rung of a ladder, the ladder may thereafter be leaned against a substantially vertical wall, with the legs of the support bar resting against the wall. The length of each leg may then be adjusted, as needed, by using the above-mentioned leg extension members.
申请公布号 US4502566(A) 申请公布日期 1985.03.05
申请号 US19830479220 申请日期 1983.03.28
申请人 LITTLE GIANT INDUSTRIES, INC. 发明人 WING, HAROLD R.
分类号 E06C7/48;(IPC1-7):E06C7/48 主分类号 E06C7/48
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