发明名称 PORTABLE TREE STAND HAVING SEATING AND STANDING PLATFORMS ADJUSTABLE TO TREE ANGLE
摘要 A portable tree stand for use with non-vertical trees provides standing and seating platforms that may remain parallel and may be adjustable. Adjustments include a slidable seat platform and a slidable standing platform that may be extended to allow adequate seating and standing space to compensate for tree trunks that diverge from the vertical. Additionally, the distance, or height, between the standing platform and the seating platform maybe varied. A threaded chain tensioner tightens a chain around the tree helping hold the stand to the tree, and optionally a tree screw secures attachment to the tree trunk. An adjustable seat support post establishes a parallelogram relationship between the seat platform and the standing platform such that an angular relationship, which may be parallel or non-parallel, may be maintained between the seat platform and the standing platform.
申请公布号 US2005039985(A1) 申请公布日期 2005.02.24
申请号 US20030644457 申请日期 2003.08.20
申请人 BUTTERWORTH CHARLES 发明人 BUTTERWORTH CHARLES
分类号 A01M31/02;(IPC1-7):A01M31/00 主分类号 A01M31/02
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