发明名称 |
Hydraulic power attenuator |
摘要 |
A compact swimming pool cover handling system including a pair of stationary roller support members, a roller for attaching the pool cover, and a hydraulic power attenuator for operation of the system. The hydraulic power attenuator includes controls for reversing directions of the roller without removing the source of liquid operating the device.
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申请公布号 |
US4675922(A) |
申请公布日期 |
1987.06.30 |
申请号 |
US19850688863 |
申请日期 |
1985.01.04 |
申请人 |
ODYSSEY SYSTEMS LIMITED |
发明人 |
COLIN, GEORGE M.;HUNTER, EDWIN J. |
分类号 |
E04H4/10;(IPC1-7):E04H3/19 |
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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