Patent ID: 11965611
Assignee: UNITED STATES STEEL CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC E  F | IPC F

Claim 10:
11. The threaded pipe of claim 10 wherein the threaded pipe further comprises an opposite end, located opposite the first end;
wherein the opposite end comprises at least one opposite box thread extending in a helical direction around the opposite end along the longitudinal axis from an opposite front surface towards the first end front surface and structured and arranged to connect to the first end;
wherein the at least one opposite box thread is tapered at an opposite box taper angle along a portion of the opposite end between the opposite end front surface and the first end front surface;
wherein the opposite box taper angle is different than the pin taper angle;

wherein a width of the root of the at least one opposite box thread changes at an opposite box root width rate of change along at least a portion of the at least one opposite box thread between a start of the at least one opposite box thread and an end of the at least one opposite box thread; and
wherein the opposite box root width rate of change is different than the pin crest width rate of change.