| 摘要 |
A cover assembly for use with a base structure such as a hot tub comprising a cover member mounted for rotational movement to the base structure by mounting arms. The mounting arms are arranged relative to the cover member so that the cover member travels along a path from a covering positioning to an open position, this path having a first path portion extending between the covering position and an intermediate location area of the cover member, and a second path portion extending between the open position and the intermediate location area. The cover member is arranged relative to the mounting arms in a manner that with the cover member on a first side of the intermediate location area in the first path portion, gravitational force on the cover assembly tends to move the cover member to the covering position, and with the cover member on the second side of the intermediate location area in the second path portion, gravitational force on the cover assembly tends to move the cover member to the open position. There are springs operatively connected to the cover assembly in a manner that with the cover member in either the first path portion or the second path portion, the springs urge the cover member toward the intermediate location area so as to oppose the gravitational force on the cover member and thus permit the cover member to be more easily moved between covering and open positions.
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