主权项 |
1. A portable tree-stand assembly comprising:
a platform having a top surface and a bottom surface and a periphery defined by an edge; a rotatable shaft attached to a surface of the platform; a first movable securing member positioned to extend beyond the periphery of the platform and coupled to the rotatable shaft through a pivoting linkage; a second movable securing member positioned to extend beyond the periphery of the platform and also coupled to the rotatable shaft through the pivoting linkage; and a gear fixed to the rotatable shaft for turning the shaft about a longitudinal axis, wherein when the gear rotates the shaft in a first direction, the first and second securing members are pivoted outward away from each other by the pivoting linkage, and when the gear rotates the shaft in a second direction, the first and second securing members are pivoted inward toward each other by the pivoting linkage. |