| 摘要 |
An adjustable tree stand utilizes a bowl and base structure. The lower end of a tree trunk is mounted into the bowl and fastened thereto utilizing a plurality of threaded turn screws which engage the side of the tree trunk and a spike at the bottom of the bowl. In one embodiment, a hemispherical shaped bowl is mounted into the base, with the base being shaped to conform to the shape of the bowl, such that it may be pivotally adjusted to adjust the tree so that it appears vertical. The bowl is then locked in place in the base by means of a lever operated cam stopper. The upper end of the bowl may be provided with a stopper ring lip which engages at one point a recess of a predetermined depth when adjusted to the pivotal position which is the maximum deviation from vertical. In a presently preferred embodiment, the bowl need not be hemispherical shaped and is provided with a bearing assembly which projects into a recess formed in the base. The bearing assembly has one ring secured to the bowl and the other ring may be seated on a lip of the recess in the base. The recess is larger than the bearing assembly, and the bowl with its bearing assembly may be tilted to provide the appearance of a vertical tree even though the tree is crooked. The bearing assembly may be locked both with respect to rotation about the vertical axis and with respect to tilt by means of a friction band which is operable to engage and disengage the bearing assembly.
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