Mark P Grabowski

US Patent:

20180217023, Aug 2, 2018

Filed:

Mar 29, 2018

Appl. No.:

15/940577

Inventors:

- Sacramento CA, US
Mark Grabowski - Pewaukee WI, US

International Classification:

G01M 3/40
G01M 3/28
G01M 5/00
G01M 3/38
G01M 3/24
G01M 3/18

Abstract:

The system utilizes conductivity equipment as well as a camera, pressure sensor, and acoustic hydrophone within a probe deployed via cable into a pipe to be inspected. The probe completes an electric circuit back to ground when the probe is adjacent a defect through which electric currents can pass, thus producing varying electric current. The camera, incorporated into the electric probe, is utilized for both inspection and navigation through the pipe by providing a close-circuit video data feed. The pressure sensor detects alterations in the pressure and flow field of the fluidic region in the area of a leak. The acoustic hydrophone listens for the sound leaks in a pressurized pipeline. The inspection device is tethered to a cable and inserted a measured distance into the pipeline, typically with the pipeline under pressure, via a launch tube. Multi-sensor data versus pipeline position is thus obtained.

US Patent:

20180080847, Mar 22, 2018

Filed:

Sep 18, 2017

Appl. No.:

15/707890

Inventors:

- Sacramento CA, US
Mark Grabowski - Pewaukee WI, US
Cory Peters - Sacramento CA, US

International Classification:

G01M 3/18
G01M 3/24
G01M 3/40
G01M 5/00

Abstract:

Extensions exited from electrodes of an electroscan probe, allowing for operation in a wide range of pipe sizes, particularly large diameter pipes, by extending the maximum effective distance of the electric fields generated by the probe. The extensions preferably extend radially from each of the electrodes, and are sized to bring tips of the extensions close to the pipe wall. The extensions can be joined by lanyards to assist in keeping them spaced apart. At least some extensions preferably have bulbous tips, preferably at least partially formed of non-conductive material to keep adjacent extensions from touching each other, especially extensions coupled to different electrodes. The extensions, in one embodiment, are threaded into collars adjacent to each electrode and selected to have a length appropriate for the pipe diameter.

US Patent:

20170045416, Feb 16, 2017

Filed:

Sep 25, 2015

Appl. No.:

14/866354

Inventors:

- Sacramento CA, US
Mark Grabowski - Pewaukee WI, US

International Classification:

G01M 3/40

Abstract:

The system utilizes conductivity equipment as well as a camera, pressure sensor, and acoustic hydrophone within a probe deployed via cable into a pipe to be inspected. The probe completes an electric circuit back to ground when the probe is adjacent a defect through which electric currents can pass, thus producing varying electric current. The camera, incorporated into the electric probe, is utilized for both inspection and navigation through the pipe by providing a close-circuit video data feed. The pressure sensor detects alterations in the pressure and flow field of the fluidic region in the area of a leak. The acoustic hydrophone listens for the sound leaks in pressurize pipes may create. The inspection device is tethered to a cable and inserted a measured distance into the pipeline, typically with the pipeline under pressure, via a launch tube. Multi-sensor data versus pipe position is thus obtained.