发明名称 |
Method and apparatus for magnetic detection of degradation of jacketed elevator rope |
摘要 |
A method and system for detecting or measuring defects in a rope having ferromagnetic tension members includes a magnetic field exciter and an array of magnetic flux sensors corresponding to the tension members in a known relationship. Measurements of magnetic flux leakage are indicative of defects. Another aspect of the invention includes a method and system for detecting or measuring defects in an elevator rope having electrically conductive tension members, whereby measured electrical resistance in the tension members is indicative of defects.</PTEXT>
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申请公布号 |
US6633159(B1) |
申请公布日期 |
2003.10.14 |
申请号 |
US19990280637 |
申请日期 |
1999.03.29 |
申请人 |
OTIS ELEVATOR COMPANY |
发明人 |
ROBAR TERRY M.;VERONESI WILLIAM A.;STUCKY PAUL A.;GIERAS JACK F. |
分类号 |
G01N27/83;B66B5/02;B66B7/12;G01N27/00;G01N27/04;G01N27/82;(IPC1-7):G01N27/82;G01R33/12 |
主分类号 |
G01N27/83 |
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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