US 12,240,020 B2
Pipeline pigging apparatus and methods of use
Brian Bell, Dunmore (CA)
Filed by Brian Bell, Dunmore (CA)
Filed on Sep. 10, 2021, as Appl. No. 17/471,350.
Claims priority of provisional application 63/077,061, filed on Sep. 11, 2020.
Prior Publication US 2022/0080473 A1, Mar. 17, 2022
Int. Cl. B08B 9/055 (2006.01); F16L 55/38 (2006.01); F16L 55/40 (2006.01); A46B 13/00 (2006.01); F16L 101/12 (2006.01)
CPC B08B 9/055 (2013.01) [B08B 9/0557 (2013.01); F16L 55/38 (2013.01); F16L 55/40 (2013.01); A46B 13/001 (2013.01); A46B 2200/3013 (2013.01); B08B 9/0553 (2013.01); B08B 9/0554 (2013.01); B08B 2209/055 (2013.01); F16L 2101/12 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An apparatus for cleaning an inner sidewall of a fluid-carrying conduit, the apparatus comprising:
a tubular shaft, having a first end and a second end, the first end of the tubular shaft having at least one first end disk and the second end of the tubular shaft having at least one second end disk;
at least two cleaning elements, the at least two cleaning elements forming a centrally disposed hub for rotatably mounting the at least two cleaning elements onto the shaft between the first and second end disks, the hub of each of the at least two cleaning elements having
at least one blade extending radially from the hub and mounted perpendicularly onto the hub at an angled orientation from a longitudinal axis x of the apparatus for frictionally contacting the inner sidewall of the conduit, such contact causing rotation of the at least two cleaning elements in a clockwise or a counterclockwise direction relative to the longitudinal axis x of the apparatus, and in opposite, counter-rotating directions relative to one another, as the apparatus traverses through the conduit bidirectionally along the longitudinal axis x.