Carburizing grade micro-alloy high pressure swivel joints
US11149885B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2018 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | May 2, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C43/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A high pressure swivel comprises a first tube; a second tube; and a plurality of balls contained between a plurality of bearing races and a plurality of complimentary bearing races, wherein the first tube and the second tube comprise a carburizing grade micro-alloy steel, wherein the carburizing grade micro-alloy steel comprises a yield strength of greater than about 110,000 psi, a tensile strength of greater than about 130,000 psi, an elongation of greater than about 14%, a reduction area of greater than about 45%, and a longitudinal Charpy v-notch of greater than about 31 ft/lbs longitudinal at about −40° C., and a nickel concentration of less than about 1 wt. %, by weight of the carburizing grade micro-alloy steel, and a carbon content of less than about 0.15 wt. %, by weight of the carburizing grade micro-alloy steel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.