Probe holder for a rotary scanner
AssigneeNucleonics Development Company
InventorAbraham Bar-Shay
Life of this patent
Estimating the term…
Abstract
A probe holder for a rotary scanner, the probe holder having a shaft and a plate rotatably mounted to the shaft. A parallelogram arrangement comprising a probe support on one side for holding a probe, an annular counterweight on an opposite side and a pair of levers therebetween secured to the plate. A spring mechanism in the annular counterweight moves the probe radially inwardly into contact with a pipe to be measured. A pair of spring-biased arms for contacting the pipe and centering the probe on the pipe are mounted to one end of the plate. A second counterweight is secured to the other end of the plate to counterbalance the contact arms.
Claims20
A holder for mounting a probe to a ring of a rotary type scanner, the probe having a sensing beam directed along a probe axis of the probe for inspecting a pipe extending through the ring, the scanner having means for rotating the ring such that the holder, when mounted to the ring, is movable 360 degrees around the pipe, the holder comprising:
- a shaft for mounting to the ring of the rotary type scanner, the shaft having a longitudinal axis;
- a support rotatably mounted to the shaft;
- a counterweight;
- and
- a pair of levers pivotally mounted to the support, each of the pair of levers having a first end portion and a second end portion, with the first end portions spaced from the second end portions, respectively, in the direction of the longitudinal axis of the shaft, the first end portions for pivotally holding the probe and the second end portions pivotally mounted to the counterweight, such that when the probe is pivotally mounted to the first end portions of the pair of levers, the pair of levers, the counterweight and the probe form a parallelogram arrangement.
A holder for mounting a probe to a ring of a rotary type scanner, the probe having a sensing beam directed along a probe axis of the probe for inspecting a pipe extending through the ring, the scanner having means for rotating the ring such that the holder, when mounted to the ring, is movable 360 degrees around the pipe, the holder comprising:
- a shaft for mounting to the ring of the rotary type scanner, the shaft having a longitudinal axis;
- a support rotatably mounted to the shaft;
- a first counterweight;
- a pair of levers pivotally mounted to the support, each of the pair of levers having a first end portion and a second end portion, the first end portions for pivotally holding the probe and the second end portions pivotally mounted to the first counterweight, such that when the probe is pivotally mounted to the first end portions of the pair of levers, the pair of levers, the first counterweight and the probe form a parallelogram arrangement;
- and
- a pair of contact arms pivotally mounted to the support, the pair of contact arms disposed relative to each other to form a gap therebetween for receiving the pipe to be inspected.
A scanning device for measuring the wall thickness of extruded pipe, the scanning device comprising:
- a rotary scanner having a ring for receiving extruded pipe therethrough and means for rotating the ring;
- a probe having a sensing beam directed along a probe axis of the probe for measuring the wall thickness of the pipe extending through the ring;
- a shaft connected to the ring of the rotary scanner, the shaft having a longitudinal axis;
- a support rotatably mounted to the shaft;
- a counterweight;
- a pair of levers pivotally mounted to the support, each of the pair of levers having a first end portion and a second end portion, with the first end portions spaced from the second end portions, respectively, in the direction of the longitudinal axis of the shaft, the first end portions pivotally mounted to the probe and the second end portions pivotally mounted to the counterweight, wherein the pair of levers, the counterweight and the probe form a parallelogram arrangement;
- and
- a pair of contact arms pivotally mounted to the support, the pair of contact arms disposed relative to each other to form a gap therebetween for receiving the extruded pipe to be measured.
Dependencies are inferred from the claim text.