发明名称 |
Self-adjusting string extensiometer |
摘要 |
Apparatus for use in the measurement of changes in the spacing between objects includes a rotatable wire storage reel coupled, by means of replaceable gears, to the drive shaft of a potentiometer. The apparatus is mounted on a first object and a wire on the storage reel is extended and attached to a second object spaced a variable distance from the first object. Constant tension is applied to the wire storage reel by means of a spring extending between a spring supply reel and a spring take-up reel coupled to the wire storage reel.
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申请公布号 |
US4057904(A) |
申请公布日期 |
1977.11.15 |
申请号 |
US19760705929 |
申请日期 |
1976.07.16 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE DEPARTMENT OF TRANSPORTATION |
发明人 |
VRABEL, JOSEPH D.;GOSSELIN, DENNIS W. |
分类号 |
G01B3/11;G01B7/02;(IPC1-7):G01B3/10;H01C10/00;G01D1/00 |
主分类号 |
G01B3/11 |
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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