Threaded pipe connection having wedge threads
US4703954A · kind A · utility
154Cited by
14References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1985 |
| Grant date | Nov 3, 1987 |
| Priority date | — |
| Expiry date | Nov 8, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L15/003
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A threaded pipe connection is disclosed of the wedge-shaped thread type that avoids high stress concentrations in the box between the first thread and the end of the box by making the length of the box between the first thread and the end of the box equal to or greater than 5% of the pipe diameter and by providing clearance between the crest of the first full thread on the box and the root of the last thread on the pin and between the crest of the last full thread on the pin and the root of the first full thread on the box.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.