Patent ID: 9273945
Filing Date: 2016-03-01
CPC Classification: E21B,G01B,G03B

Claim Text:
1. A measurement head comprising: a sensor supported within a sensor body; a plurality of arms pivotally mounted to the sensor body and movable outwardly from the sensor body to contact an interior surface of the pipe, wherein each of the arms includes a finger engaged to the sensor for communicating an extended distance of the arms indicative of a profile of the interior surface of the pipe to the sensor, the finger extending radially inward and transverse from the corresponding arm into engagement with the sensor; and a guide including a first end and a second end, the first end pivotally attached to a terminal end of a corresponding one of the plurality of arms and the second end pivotally attached to a collar supported on the sensor body forward of the plurality of arms, wherein the guide causes pivoting of a corresponding one of the plurality of arms for guiding past obstructions.