发明授权
US5170673A Method and apparatus for determining the uncovered size of an opening
adapted to be covered by multiple moveable doors
失效
用于确定适于被多个可移动门覆盖的开口的未覆盖尺寸的方法和装置
- 专利标题： Method and apparatus for determining the uncovered size of an opening adapted to be covered by multiple moveable doors
- 专利标题（中）： 用于确定适于被多个可移动门覆盖的开口的未覆盖尺寸的方法和装置
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申请号： US590194申请日： 1990-09-28
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公开(公告)号： US5170673A公开(公告)日： 1992-12-15
- 发明人: Osman Ahmed , Steven A. Bradley , Steven L. Fritsche
- 申请人： Osman Ahmed , Steven A. Bradley , Steven L. Fritsche
- 申请人地址： IL Buffalo Grove
- 专利权人： Landis & Gyr Powers, Inc.
- 当前专利权人： Landis & Gyr Powers, Inc.
- 当前专利权人地址： IL Buffalo Grove
- 主分类号： B08B15/02
- IPC分类号： B08B15/02
摘要：
Fume hood controller apparatus includes a computing means, together with associated memory, which can be configured for horizontally and/or vertically moveable sash doors by inputting the necessary dimensions of the sash doors and other structural features, such as the upper lip height, frame widths and the like. The apparatus rapidly calculates the size of the uncovered area of the fume hood as a functions of the position of the sash doors.
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