发明授权
- 专利标题： Central flange mounted damper
- 专利标题（中）： 中央法兰安装阻尼器
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申请号： US625796申请日： 1996-03-29
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公开(公告)号： US5768839A公开(公告)日： 1998-06-23
- 发明人: Francis J. McCabe
- 申请人： Francis J. McCabe
- 专利权人： Mccabe; Francis J.
- 当前专利权人： Mccabe; Francis J.
- 主分类号： A62C2/12
- IPC分类号： A62C2/12 ; F24F13/08 ; F24F13/14 ; F24F13/10 ; F04G21/02
摘要：
A fire damper is provided with a central flange for mounting within a wall. The flange having a plurality of holes allowing any plaster material in the wall construction to pass through the holes and retain the damper. A miter cut is provided at the corners of the damper and the flange to allow for expansion during a fire. The damper is positioned within an opening in the wall with the flange positioned within the opening of the wall. The wall is built up by applying mortar against the damper and extending flange. With the mortar being forced through the holes in the flange to hold the damper in place.
公开/授权文献
- US4592262A Remote control system for a musical instrument or instruments 公开/授权日：1986-06-03
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