发明名称 LADDER LEVELLING DEVICE
摘要 A ladder levelling device includes a housing, a telescopic member and a lever. The lever is positioned within an interior cavity of the telescopic member. The lever has a mounting end and a gripping end. The mounting end of the lever is pivotally mounted at a ground engaging end of the telescopic member. The gripping end of the lever is accessible through a lever access opening at a handgrip end of the telescopic member. A locking pin is carried by the lever. The lever is pivotable between a locking position and a release position. In the locking position the locking pin carried by the lever extends through an aperture in the telescopic member and engages one of a plurality of apertures in the housing. In the release position the locking pin is retracted from the apertures in the housing.
申请公布号 CA2216411(C) 申请公布日期 2005.07.26
申请号 CA19972216411 申请日期 1997.09.25
申请人 BECK, HAROLD ANTHONY ERNEST;BECK, JASON TODD ANTHONY 发明人 BECK, HAROLD ANTHONY ERNEST;BECK, JASON TODD ANTHONY
分类号 E06C7/44;(IPC1-7):E06C7/02 主分类号 E06C7/44
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