Load indicating member with identifying element
First Claim
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1. An apparatus comprising:
- an ultrasonic transducer attached to a fastener, for making ultrasonic measurements in the fastener; and
a non-volatile memory device applied to the ultrasonic transducer, wherein the non-volatile memory device stores information corresponding to data associated with the fastener.
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Abstract
A load indicating member is provided with an identifying element which can be accessed and used to determine ultrasonic measurement parameters specific to the load indicating member to provide more precise and more reliable load measurements by compensating for differences resulting from manufacturing variations in individual load indicating members. The parameters specific to the load indicating member can be stored in coding applied to the load indicating member or in a database that can be accessed remotely, for example, using the Internet.
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Citations
30 Claims
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1. An apparatus comprising:
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an ultrasonic transducer attached to a fastener, for making ultrasonic measurements in the fastener; and a non-volatile memory device applied to the ultrasonic transducer, wherein the non-volatile memory device stores information corresponding to data associated with the fastener. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus comprising:
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a permanent mark applied to a fastener, wherein the mark stores information corresponding to data associated with the fastener; and an ultrasonic transducer applied to the permanent mark, for making ultrasonic measurements in the fastener; wherein the permanent mark can be detected through the ultrasonic transducer. - View Dependent Claims (12, 13, 14, 15)
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- 16. A load indicating member adapted for ultrasonic load measurement responsive to an identifying element on the load indicating member, wherein the load indicating member is a fastener, and wherein the identifying element contains encoded data relating to the fastener for indicating a zero-load acoustic length of the fastener and data for indicating an acoustic signature of the fastener.
Specification