Ratcheting anti-rotation lock for threaded connectors
US9708865B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2012 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Jul 10, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L15/08
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pipe connection includes a pin having external threads and a box having internal threads. A circumferentially extending row of pin teeth are located on an exterior portion of the pin. A slot extends through a side wall of the box. A key is carried in the slot, the key having a row of key teeth that mate with the pin teeth. The key is mounted to the box such that a movable portion of the key is radially movable relative to the box between radially outward and radially inward positions. The key is biased toward the inward position, so that the key teeth ratchet on the pin teeth during make-up of the pin and the box. The key and pin teeth have a saw-tooth configuration to resist unscrewing rotation of the pin and the box. The key may be an integral part of the side wall of the box or a separate component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.