US 11,732,824 B2
Nut for joining conduits
Zachary Alan Schramm, Glendale, AZ (US); Bradley James Briars, Palatine, IL (US); and Robert E. Riedel, Jr., Fox River Grove, IL (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Jan. 28, 2020, as Appl. No. 16/774,772.
Prior Publication US 2021/0231241 A1, Jul. 29, 2021
Int. Cl. F16L 19/02 (2006.01); F16B 37/16 (2006.01); F16B 37/00 (2006.01)
CPC F16L 19/02 (2013.01) [F16B 37/00 (2013.01); F16B 37/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A hammer nut, for connecting two pipe segments that are used to transfer fluids under pressure during oilfield service or production operations, comprising:
a body having a generally cylindrical shape extending along an axis from a first end to a second end, the body including a sidewall defining an outer surface of the body and a central opening around the axis, the central opening comprising:
a first cylindrical surface extending a first axial distance from the first end of the body;
at least one thread formed on the first surface;
a second surface extending a second axial distance away from the first surface and toward the second end, the second surface being angled, between about 2 degrees and about 6 degrees, relative to the first surface along the second axial distance, wherein the first axial distance is from about 0.5 to about 2.0 times the second axial distance; and
a third surface proximate the second end, the third surface being disposed radially inwardly of the first surface and the second surface; and
a plurality of lugs extending radially outwardly from the outer surface of the body.