| 发明名称 |
Counterbalanced window operator |
| 摘要 |
A counterbalanced window operator includes a housing in which a rotatable lead screw, rotated by a crank handle or electric power unit, cooperates with a non-rotatable nut member to axially displace the nut member and move pivoting arms to open and close the window.
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| 申请公布号 |
US5442879(A) |
申请公布日期 |
1995.08.22 |
| 申请号 |
US19930076125 |
申请日期 |
1993.06.14 |
| 申请人 |
V. KANN RASMUSSEN INDUSTRI A/S |
发明人 |
CHRISTENSEN, PER B. |
| 分类号 |
E05F1/10;E05F11/20;E05F11/24;E05F11/34;E05F15/10;(IPC1-7):E05F1/10 |
主分类号 |
E05F1/10 |
| 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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