Rotating body strain meter
First Claim
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1. A ROTATING BODY STRAIN METER COMPRISING, IN COMBINATION:
- A STRAIN GAUGE ELEMENT AFFIXED TO A ROTATING BODY AT A POINT WHERE STRAIN IS TO BE MEASURED, SAID ELEMENT VARYING ITS RESISTANCE IN CORRESPONDENCE TO STRAIN CHANGES;
AN ALTERNATING CURRENT BRIDGE AFFIXED TO SAID ROTATING BODY COMPRISING SAID STRAIN GAUGE ELEMENT AND A RESISTIVE ELEMENT AS FIRST ADJACENT ARMS AND TWO IMPEDANCE ELEMENTS AS SECOND ADJACENT ARMS;
MEANS FOR APPLYING AN ELECTRIC VARIABLE FREQUENCY SIGNAL TO THE JUNCTIONS FORMED BY SAID FIRST AND SECOND ADJACENT ARMS BY ELECTROMAGNETIC COUPLING;
MEANS FOR TAKING VOLTAGE FROM SAID BRIDGE BY ELECTROMAGNETIC COUPLING TO DETECT BRIDGE UNBALANCE;
AND MEANS FOR VARYING THE FREQUENCY OF SAID ELECTRIC VARIABLE SIGNAL TO PROVIDE AN INDICATION OF STRAIN.
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1 Claim
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1. A ROTATING BODY STRAIN METER COMPRISING, IN COMBINATION:
- A STRAIN GAUGE ELEMENT AFFIXED TO A ROTATING BODY AT A POINT WHERE STRAIN IS TO BE MEASURED, SAID ELEMENT VARYING ITS RESISTANCE IN CORRESPONDENCE TO STRAIN CHANGES;
AN ALTERNATING CURRENT BRIDGE AFFIXED TO SAID ROTATING BODY COMPRISING SAID STRAIN GAUGE ELEMENT AND A RESISTIVE ELEMENT AS FIRST ADJACENT ARMS AND TWO IMPEDANCE ELEMENTS AS SECOND ADJACENT ARMS;
MEANS FOR APPLYING AN ELECTRIC VARIABLE FREQUENCY SIGNAL TO THE JUNCTIONS FORMED BY SAID FIRST AND SECOND ADJACENT ARMS BY ELECTROMAGNETIC COUPLING;
MEANS FOR TAKING VOLTAGE FROM SAID BRIDGE BY ELECTROMAGNETIC COUPLING TO DETECT BRIDGE UNBALANCE;
AND MEANS FOR VARYING THE FREQUENCY OF SAID ELECTRIC VARIABLE SIGNAL TO PROVIDE AN INDICATION OF STRAIN.
- A STRAIN GAUGE ELEMENT AFFIXED TO A ROTATING BODY AT A POINT WHERE STRAIN IS TO BE MEASURED, SAID ELEMENT VARYING ITS RESISTANCE IN CORRESPONDENCE TO STRAIN CHANGES;
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Current AssigneeKatsumi Takami, Kiyokata Matsuura
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Original AssigneeKatsumi Takami, Kiyokata Matsuura
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InventorsKATSUMI TAKAMI, KIYOKATA MATSUURA
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Application NumberUS04/285,426Time in Patent Office931 DaysField of SearchUS Class Current73/773CPC Class CodesG01L 3/108 involving resistance strain...
