发明授权
US4295486A Low cost, diffuser concealable, volume control, heat responsive,
resettable, butterfly damper operator
失效
低成本，扩散器可隐藏，音量控制，热响应，可复位，蝶形阻尼器操作器
- 专利标题： Low cost, diffuser concealable, volume control, heat responsive, resettable, butterfly damper operator
- 专利标题（中）： 低成本，扩散器可隐藏，音量控制，热响应，可复位，蝶形阻尼器操作器
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申请号： US77583申请日： 1979-09-21
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公开(公告)号： US4295486A公开(公告)日： 1981-10-20
- 发明人: Francis J. McCabe
- 申请人： Francis J. McCabe
- 申请人地址： PA Buckingham
- 专利权人： Prefco Products, Inc.
- 当前专利权人： Prefco Products, Inc.
- 当前专利权人地址： PA Buckingham
- 主分类号： A62C2/24
- IPC分类号： A62C2/24 ; F24F13/15 ; G08B17/02 ; F16K17/38
摘要：
A novel operator is disclosed for use in combination with a butterfly fire and volume control damper, which operator may be concealed behind a standard concentric diffuser. Only a screwdriver aperture need be provided in the diffuser to facilitate the volume adjustment of the butterfly damper. In response to excessive heat in the vicinity of the damper, the blades of the damper will move to their fully closed position. Once activation conditions have passed, the damper may be reset by replacing the releasing device which separated in response to said heat.
公开/授权文献
- USD406786S Circumferentially intermediate portion of a bracelet 公开/授权日：1999-03-16
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