| 发明名称 |
TORSION SPRING POWERED DOOR |
| 摘要 |
Bischof-Rumps 2-2 An access door has a frame formed with longitudinally extending channels which receive a closure element for sliding therealong. A torsion spring secured to the frame and to the closure element maintains the closure element inan open or closed position. |
| 申请公布号 |
CA1311259(C) |
申请公布日期 |
1992.12.08 |
| 申请号 |
CA19880558913 |
申请日期 |
1988.01.26 |
| 申请人 |
AMERICAN TELEPHONE AND TELEGRAPH COMPANY |
发明人 |
BISCHOF, ALBERT;RUMPS, NORBERT A., JR. |
| 分类号 |
E05F1/16;A47B;A47B95/00;H05K5/02 |
主分类号 |
E05F1/16 |
| 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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