发明名称 |
ARTICULATED MINE DOOR OPENING MECHANISM |
摘要 |
A mine door system comprising at least one mine door leaf hinged at one side to a door frame defining an entry. The system includes an articulated door-moving mechanism that articulates between a first configuration in which the mechanism applies a relatively small door-moving force to the door leaf to move it at a first speed and a second configuration in which the mechanism applies a larger door-moving force to the door leaf to move it at a second speed less than the first speed. A related method is also disclosed.
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申请公布号 |
US2011203182(A1) |
申请公布日期 |
2011.08.25 |
申请号 |
US20100708948 |
申请日期 |
2010.02.19 |
申请人 |
KENNEDY METAL PRODUCTS & BUILDINGS, INC. |
发明人 |
KENNEDY WILLIAM R.;KENNEDY JOHN M. |
分类号 |
E05F15/12;E05F15/00;E06B3/34 |
主分类号 |
E05F15/12 |
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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