发明名称 |
Counter weight door |
摘要 |
A counter weight door has a plurality of counter weights each associated with a respective one of the panels and an interconnecting spring connecting each of the weights to the next. At least one of the counter weights has a cradle which is arranged to receive a plurality of weighted members. The spring arrangement connecting one counter to the next is housed within the cradle and includes a shaft on which the spring is mounted. The door has a pulley system which has a first pulley on one side of the door, a second double pulley on the other side of the door, a first cable fixed at a first end to the door extending through the first pulley and a second cable fixed at a first end to the door extending through the second pulley to the counter weight system.
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申请公布号 |
US6684931(B2) |
申请公布日期 |
2004.02.03 |
申请号 |
US20010788625 |
申请日期 |
2001.02.05 |
申请人 |
HANOVER DOOR SYSTEMS (1966) INC. |
发明人 |
REIMER GREG;ENNS ABRAM H.;BRAUN DENNIS;KLASSEN RICHARD;TOEWS WALTER;NEUFELD LEN |
分类号 |
E05D15/24;E05F1/02;E05F11/00;E05F11/04;(IPC1-7):E05F11/00;E05D15/06 |
主分类号 |
E05D15/24 |
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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