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

Claim 0:
1. A threaded connection comprising:
a first tubular component comprising at least one pin thread extending in a helical direction around the first tubular component along a longitudinal axis from a first tubular component front surface towards a first tubular component back surface opposite the first tubular component front surface, each of the pin threads includes a pin crest width, a pin stab flank and a pin load flank, the pin crest width changes at a pin crest width rate of change; and
a second tubular component comprising at least one box thread extending in a helical direction around the second tubular component along the longitudinal axis from a second tubular component front surface towards a second tubular component back surface opposite the second tubular component front surface and structured and arranged to connect to the first tubular component, each of the box threads includes a box root width, a box stab flank and a box load flank, the box root width changes at a box root width rate of change, wherein the box root width rate of change is different than the pin crest width rate of change;
wherein the pin crest width is greater than the box root width forming a width bias;
wherein the at least one pin thread is tapered at a pin taper angle;
wherein the at least one box thread is tapered at a box taper angle;
wherein the box taper angle is different than the pin taper angle forming a taper angle bias;
wherein the taper angle bias and the width bias are configured to concentrate stress on the pin load flank, box load flank, pin stab flank and the box stab flank, the stress decreasing along the threaded connection from the first tubular component front surface towards the first tubular component back surface; and
wherein the taper angle bias and the width bias are configured to orient the first tubular component such that a pin thread adjacent the first tubular component front surface is first to engage the box threads during the rotation for the threaded connection and each subsequent pin thread engages the box threads in an ordered and controlled manner.