Resilient pipeline inspection brush

A method for constructing a resilient inspection brush comprising the steps of:

• a) providing an electrically conductive base housing [320] constructed from a generally cylindrical wall, having a bottom portion [325] and a top portion [321] with a recess passing generally lengthwise from the top to bottom portions;
• b) forming a plurality of bristles [331];
• c) positioning the plurality of bristles [331] in a generally parallel configuration across the top portion [321] of the base housing [320] such that they are generally perpendicular to the length of the recess;
• d) positioning an elongated retaining member [350] having a first end and a second end, across the bristles [331];
• e) forcing the retaining member [350] into the recess such that at least one end of the retaining member [350] abuts against the cylindrical wall, thereby folding the bristles [331] into the recess such that they are held in place by the retaining member [350];
• and
• f) swedging the top portion [321] of the base housing [320] so as to crimp it tightly against the bristles [331] to hold them more securely.

A resilient inspection brush constructed by performing the steps comprising:

• a) providing an electrically conductive base housing [320] constructed from a generally cylindrical wall, having a bottom portion [325] and a top portion [321] with a recess passing generally lengthwise from the top portion [321] to bottom portion [325];
• b) forming a plurality of electrically conductive bristles [331];
• c) positioning the plurality of bristles [331] in a generally parallel configuration across the top portion [321] of the base housing [320] such that they are generally perpendicular to the length of the recess;
• d) positioning an elongated electrically conductive retaining member [350] across the bristles [331];
• e) forcing the retaining member [350] into the recess such that at least one end of the retaining member [350] abuts against the cylinder wall, thereby folding the bristles [331] into the recess such that they are held in place by the retaining member [350];
• and
• f) after forcing the retaining member [350] into the recess, swedging the top portion [321] of the base housing [320] so as to crimp it tightly against the bristles [331] to hold them more securely.

A method for constructing a resilient inspection brush comprising the steps of:

• a) providing an electrically conductive base housing [320] constructed from a generally cylindrical wall, having a bottom portion [325] and a top portion [321] with a recess passing generally lengthwise from the top portion [321] to the bottom portion [325];
• b) forming a plurality of electrically conductive bristles [331, 611, 613, 615];
• c) wrapping a central portion [331c, 611c, 613c, 615c] of at least one bristle [331, 611, 613, 615] having a first end [331a, 601a, 603a, 605a and a second end [331b, 601b, 603b, 605b] around a retaining member [350] having at least a first end and a second end allowing the at least one bristle [331, 611, 613, 615] to extend away from the retaining member [350] in generally the same direction of the bristle [331]
• d) securing the retaining member [350] and the central portion [331c, 607, 609, 611] of each bristle [331, 611, 613, 615] into the recess such that at least one end of the securing member [350] abuts the cylinder wall, thereby holding the bristles in place by the retaining member [350], and allowing conduction between the bristles [331, 611, 613, 615], retaining member [350], and the base housing [320];
• and
• e) swedging the top portion [321] of the base housing [320] so as to crimp it tightly against the bristles [331] to hold said bristles more securely.

A resilient inspection brush device comprising:

• a) an electrically conductive inner sleeve [810] having a generally elongated cylindrical wall, with a recess passing generally lengthwise through the inner sleeve [810],
• b) electrically conductive retaining member [350] having a first end and a second end positioned at least partially across the recess with at least one abutting and secured in the inner sleeve [810];
• c) a plurality of electrically conducting bristles [331] tightly packed in the inner sleeve [810], the inner sleeve swedged to hold the plurality of bristles, each bristle [331] having at least a first end [331a], a second end [331b] and a securing portion [331c] between the first end [331a] and second end [331b], the securing portion [331c] of the bristle [331] at least partially encircling the retaining member [350], and the first end [331a] and the second end [331b] extending out of the top portion of the base housing [860];
• and
• d) a base housing [860] having a central recess [880] for receiving the inner sleeve [810] and for securely retaining the inner sleeve [810].