发明名称 |
Mechanism for extending and retracting swimming pool covers |
摘要 |
A swimming pool cover apparatus is described whereby the pool cover may be extended and retracted through a power source. The apparatus includes a drive shaft circumscribed by a pair of sleeves. Each of the sleeves may be selectively rotated through a double-dog clutch system connected to the drive shaft. A cover-collecting drum is connected to one of the sleeves. A pair of cord-collecting reels rotatably circumscribe the other sleeve. Controlled rotation of the two cord-collecting reels is achieved through a ratchet and spring-biased pawl system. This system also permits slippage of either of the two cord-collecting reels when the tension on either one of the reels becomes excessive.
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申请公布号 |
US5105481(A) |
申请公布日期 |
1992.04.21 |
申请号 |
US19890393407 |
申请日期 |
1989.08.11 |
申请人 |
COVER-POOLS, INC. |
发明人 |
LAMB, DECEASED, JOE H.;RAGSDALE, KELLY J.;MCCLELLAND, DONALD L. |
分类号 |
E04H4/10 |
主分类号 |
E04H4/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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