Predetermined load release device for a jar
US11536106B2 · kind B2 · utility
0Cited by
12References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 13, 2021 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | Apr 13, 2041 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B31/107
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A release device for a jarring tool includes a collet positioned between the mandrel of the jarring tool and a trigger sleeve. At least one end of the collet is in contact with a precompressed spring via a bushing. In order for the jarring tool to operate, a force greater than the precompressed force of the spring must be applied to the mandrel so that the collet can move in axial direction against the spring thereby releasing the mandrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.