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Class 73/637 - Around cylindrical object


Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein relative movement of the transducer
No. of patents: 74
Last issue date: 03/27/2007


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NumberTitleIssue Date
7194913Apparatuses and methods for monitoring stress in steel catenary risers
The invention describes apparatuses and methods of monitoring fatigue, structural response, and operational limits in structural components. More particularly, the present invention relates to fatigue, response, and operational monitoring systems on steel catenary r...
03/27/2007
7182133Elevator sensor
At least one sensor is mounted for monitoring the vertical position of an elevator relative to selected features on a tubular string. A variety of sensor types is provided. Optional mounting arrangement permits the sensors to be situated close to a tubular and free ...
02/27/2007
6945083Method of and apparatus for determining the eccentricity of a hollow billet
The eccentricity of a hollow billet is measured at the outlet of an inclined-roll rolling mill by launching an ultrasonic pulse into the billet from a laser of a measuring device and measuring the transit time of an echo pulse also utilizing a laser and an optical a...
09/20/2005
6940409Fluid flow detector
A method and apparatus for monitoring fluid flow in a pipe or at an exit of the pipe and detecting a fault. The system includes an acoustic generator which is activated by the fluid flowing in the pipe or at the exit of the pipe. The acoustic generator sends an acou...
09/06/2005
6938457Phased array ultrasonic reference block
The calibration device includes a guide surface and an angle gauge supported relative to the guide surface on a first side of the guide surface. The angle gauge is adjustable to measure a skew angle of the ultrasonic transducer on the guide surface. The angle gauge ...
09/06/2005
6920791Ultrasound monitoring of overlapping welded joints between sheets
In a method and a device for the ultrasonic monitoring of overlapping welded joints between a first sheet and a second sheet pulses are irradiated at an angle of between 15 and 80° into the first sheet by a first rotating probe head. The rotating probe head is arra...
07/26/2005
6561024Method and apparatus for creating clearance between two points
A method and apparatus for creating a finite clearance space between two parts under blind assembly conditions involves threading an elongated sensor into a housing containing the part to be sensed by first placing a spacer element on an operative surface...
05/13/2003
6536283Assemblies and methods for inspecting piping of a nuclear reactor
Automated inspection assemblies for scanning pipes of a nuclear reactor are described. In one embodiment, the assembly includes a mounting subassembly and a scanning subassembly. The mounting subassembly includes a clamp configured to be mounted to select...
03/25/2003
6523418Apparatus and method for ultrasonic stress measurement using the critically refracted longitudinal (Lcr) ultrasonic technique
The latent stress in both flat and curved materials can be measured using critically refracted longitudinal ultrasonic technique. The system uses a frame to hold a hydraulic piston. The piston is used to apply an adjustable force against the probes. A sig...
02/25/2003
6222897Wrist raster scan methods
Scan methods of inspecting piping and welds of a pipe elbow in a reactor pressure vessel of a boiling water reactor are disclosed. The scan apparatus includes a motor connected to a scan head having two ultrasonic transducer probes each including an ultra...
04/24/2001
5969255System and method of ultrasonic inspection of tubular members
A system for ultrasonic inspection of a tubular member using an ultrasonic inspection unit having a platform, a guide member with a longitudinal axis, a wheel connected to the platform and contacting a surface of the tubular member for moving the platform...
10/19/1999
5963030Pipe inspection apparatus and process
An openable ring assembly is externally centered around and moved parallel to the centerline of a stationary pipe. As a low-frequency EM source signal is applied to the ring assembly, the time and/or frequency shifts of a detected EM signal from the sourc...
10/05/1999
5864065Test apparatus for a railway wheel
A railroad wheel test apparatus for sensing and mapping the subsurface of a railroad wheel tread face has a housing assembly with a holding device, a wheel transfer arrangement, a transducer assembly, a positioning and moving table for the transducer and ...
01/26/1999
5686668System and method of ultrasonic inspection of tubular members
A cart for inspecting a drill pipe having a platform with an ultrasonic inspection unit thereon, a first pair of wheels connected to the platform so as to move the platform longitudinally along the drill pipe relative to a rotation of the drill pipe, and ...
11/11/1997
5646351Ultrasonic material hardness depth measurement
The invention is an ultrasonic surface hardness depth measurement apparatus and method permitting rapid determination of hardness depth of shafts, rods, tubes and other cylindrical parts. The apparatus of the invention has a part handler, sensor, ultrason...
07/08/1997
5641909Scan assembly structure
Apparatus is disclosed for providing one hundred percent inspection of natural gas mains under operating flow conditions. The apparatus includes a scan unit assembly which is inserted into the gas main to collect data for the production of graphic images ...
06/24/1997
5585565Method for the ultrasonic inspection of pipe and tubing and a transducer assembly for use therewith
A transducer assembly and method for the ultrasonic inspection of tubing. An elastic membrane is used to form a reservoir of ultrasonic fluid coupled to ultrasonic transducers with the membrane conforming to the surface of the tubing being inspected. Guid...
12/17/1996
5157977Inspection machine
The apparatus of the present invention is a machine for feeding, indexing, testing, and storing tubular goods. The machine concentrates on the end segments of the tubular goods. The machine uses the eddy current test method to test the outer surface, the ...
10/27/1992
5113697Process and apparatus for detecting discontinuities on long workpieces
Process and apparatus for the detection of discontinuities in long workpieces such as pipes, tubes, rods and bars using vibrational transducer equipment transmitter pulses in separate directions about the workpiece....
05/19/1992
5108693Non-destructive dimensional and flaw inspection of thin wall tube weldments
Nuclear fuel cladding tube end plug welds are ultrasonically scanned to develop data indicative of weld thickness, weld penetration, and the existence and size of any included feature, such as pores. A computer analyzes the data to determine critical weld...
04/28/1992
5036707Ultrasonic testing apparatus and method for rapidly inspecting a large number of gas cylinders of similar design for internal neck-shoulder defects
The present invention provides an apparatus and method for ultrasonically testing the internal neck-shoulder region of a large number of gas cylinders for radially oriented defects. The apparatus and method includes housing an ultrasonic transducer within...
08/06/1991
5007291Ultrasonic inspection apparatus with centering means for tubular members
Pipe inspection apparatus comprising transducers for transmitting pulsed beams of ultrasonic energy longitudinally, transversely and obliquely into the wall of the pipe for detection of flaws. The apparatus includes a motor driven chuck 18 for rotating th...
04/16/1991
4918989Ultrasonic method of measuring the thickness of the plating on a metal tube, the corresponding apparatus and its application to Zr plated alloy tubes
According to the method of the invention concerning tubes, of which the plating to be checked is at least 0.4 mm thick and in which the acoustic impedance differs by at least 1% relative from that of the core of the tube, a properly dampened transducer is...
04/24/1990
4905516Wall thickness measuring device for pipes, cable casings and the like, more particularly of extruded plastics
The invention relates to a wall thickness measuring device for pipes and the like, more particularly of extruded plastics, having a measuring head (15) connected to measuring and supply leads. The measuring head is mounted to be reversed around an opening...
03/06/1990
4893512Swinging-type automatic examination apparatus for piping
A swinging-type apparatus for automatically examining pipes includes first and second clamping devices provided at the ends of an extendible body. The first clamping device is made to clamp a first pipe, the second clamping device is made to unclamp the f...
01/16/1990
4872130Automated in-line pipe inspection system
A real-time ultrasonic pipe inspection system is provided which utilizes computer processing methods in real-time to create a user-friendly interactive environment achieving ease of operation as well as a combination of consistency, thoroughness and speed...
10/03/1989
4843884Method and system for ultrasonic detection of flaws in test objects
A method, apparatus and system for the ultrasonic detection and evaluation of flaws in annular test objects including an arrangement of ultrasonic transducers that are rotated about the outer surface of the test object and provide an ultrasonic indication...
07/04/1989
4785668Drill collar tester
The instant invention relates to an apparatus and method for inspecting the structural integrity of drill collars used in the drilling of oil and gas wells....
11/22/1988
4718277Method and apparatus for characterizing defects in tubular members
An ultrasonic inspection device having an array of opposing transducers that longitudinally, transversely, and obliquely transmit sonic beams through tubular members having a range of diameters such that refracted beams meet on the inner surface of the me...
01/12/1988
4686078Method and apparatus for displacing a reactor weld scanner assembly by variable buoyancy
A method, and an apparatus for carrying out the method, for displacing a weld scanner in and out of a horizontal reactor vessel nozzle submerged in a water pool characterized by buoyancy chambers into which water and air may be introduced by remote contro...
08/11/1987
4679437Method of detecting flaws in thick wall steel pipe with ultrasonic angle beam technique
A method of reliably detecting flaws in a thick wall steel pipe with an ultrasonic beam in which flaws of the internal surface of the pipe are detected using a shear wave mode. The transmitting probe is disposed slantingly relative to both the longitudina...
07/14/1987
4672852Test manipulator externally applicable to a pipe
A test manipulator externally applicable to a pipe, preferably for ultrasonically testing welded seams, the manipulator having a divided race for surrounding a pipe which is to be tested, a guide segment guiding the race at the periphery thereof, a test s...
06/16/1987
4665734Method and installation for selective detection of defects in a workpiece
For selective detection of microscopic defects in a workpiece to be checked presenting at least one macroscopic discontinuity of known nature, upon relative motion in respect to such workpiece according to a given check line, detecting the times when such...
05/19/1987
4641532Apparatus for adjustably mounting ultrasonic testing devices
Apparatus for adjustably mounting ultrasonic testing devices around a rod end weld for providing water path adjustment to maintain predetermined focal depths of the testing devices, such as transducers. The apparatus enables the transducers to be adjustab...
02/10/1987
4641531Ultrasonic inspection apparatus and method for locating multiple defects in eccentric wall tubular goods
An ultrasonic inspection apparatus is shown for locating multiple defects in eccentric wall tubing or goods. A plurality of transducers are arranged in mated pairs, each of the pairs including a sender element for transmitting an ultrasonic shear wave and...
02/10/1987
4640131Method and apparatus for the ultrasonic testing of bolts with a wall thickness discontinuity
A method for the ultrasonic testing of bolts for incipient cracks emanating from a wall thickness discontinuity between thinner and thicker parts of the bolt, which includes placing an ultrasound transmitter and receiver in the form of a piezo-electric tr...
02/03/1987
4591995Process and device for monitoring single strands in stranding processes
For monitoring stranding machines for breakage or run-out of single strands, a device is employed which checks the rope or cable after stranding for uniformity of the rope or cable surface. For this purpose, an electrical image of the rope or cable surfac...
05/27/1986
4586379Ultrasonic pipe inspection system
Remote-controlled system for moving an ultrasonic transducer assembly around a pipe where it has a welded joint between a straight pipe section and a curved or straight pipe section. The system includes a platform movable along an arm projecting from a ca...
05/06/1986
4574638Device for detecting end-shape of steel tube
A device for detecting an end-shape of a steel tube which includes in combination: a plurality of detectors disposed around the circumference of a steel tube to be carried forward by a forwarding mechanism; and a detector position changing mechanism provi...
03/11/1986
4562738Automatic flaw detection device
An automatic flaw detection apparatus comprises a supporting frame; a rotational frame supported inside the supporting frame in a freely rotatable manner by means of bearings; a hollow shaft which is supported by and inside the rotational frame, through t...
01/07/1986
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