发明授权
- 专利标题： Horizontal film balance having wide range and high sensitivity
- 专利标题（中）： 水平胶片平衡度范围广，灵敏度高
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申请号： US240647申请日： 1981-03-05
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公开(公告)号： US4413506A公开(公告)日： 1983-11-08
- 发明人: Bernard M. Abraham , Kenjiro Miyano , John B. Ketterson
- 申请人： Bernard M. Abraham , Kenjiro Miyano , John B. Ketterson
- 专利权人： Abraham Bernard M,Kenjiro Miyano,Ketterson John B
- 当前专利权人： Abraham Bernard M,Kenjiro Miyano,Ketterson John B
- 主分类号： G01N13/02
- IPC分类号： G01N13/02
摘要：
A thin-film, horizontal balance instrument is provided for measuring surface tension (surface energy) of thin films suspended on a liquid substrate. The balance includes a support bearing and an optical feedback arrangement for wide-range, high sensitivity measurements. The force on the instrument is balanced by an electromagnet, the current through the magnet providing a measure of the force applied to the instrument. A novel float construction is also disclosed.
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