Electricity: measuring and testing – Determining nonelectric properties by measuring electric...
Reexamination Certificate
2007-12-20
2010-10-26
Nguyen, Hoai-An D (Department: 2831)
Electricity: measuring and testing
Determining nonelectric properties by measuring electric...
C324S718000, C073S865800
Reexamination Certificate
active
07821247
ABSTRACT:
A system for measuring a voltage differential in a current-carrying pipe using a propulsion vehicle for conveying the system inside the pipe, the system including a first contact for maintaining electrical contact with the pipe as the vehicle moves through the pipe; a second contact positioned in a spaced apart relationship from the first contact for maintaining electrical contact with the pipe as the vehicle moves through the pipe; and an AC voltage reading device connected to the first contact and the second contact for measuring the AC voltage between the first contact and the second contact as the vehicle moves through the pipe.
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Fagbayi Rasheed Kolawole
Mateer Mark Wilson
Pots Bernardus Franciscus Maria
Scott Paul Kevin
Hickman William E.
Nguyen Hoai-An D
Shell Oil Company
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