发明名称 |
Spool |
摘要 |
A spool (1) for use with a swimming pool cover or with a shade cover. The spool (1) has a roller assembly (4), and a cover (not shown) may be wound onto the roller assembly (4) or unwound from the assembly (4). The roller assembly (4) has a pre-tensioned rubber strip (22) that when viewed in transverse cross-section is substantially rectangular in shape and two opposing sides of the rectangle are notched. This strip (22) is tensioned when the cover is unwound from the spool (1) and a locking mechanism retains the cover in a desired unwound position against the tension of the rubber strip (22).
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申请公布号 |
US2002189009(A1) |
申请公布日期 |
2002.12.19 |
申请号 |
US20020149581 |
申请日期 |
2002.06.14 |
申请人 |
WALTON ROBERT NIVEN;WALTON LAWRENCE JOHN;GILMORE DUNCAN B;AGNEW NICHOLAS D |
发明人 |
WALTON ROBERT NIVEN;WALTON LAWRENCE JOHN;GILMORE DUNCAN B;AGNEW NICHOLAS D |
分类号 |
E04H4/10;E06B9/60;(IPC1-7):E04H4/00 |
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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