Latching devices
US4726421A · kind A · utility
8Cited by
8References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1987 |
| Grant date | Feb 23, 1988 |
| Priority date | — |
| Expiry date | Mar 17, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/03
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
There is disclosed a device for latching a well tool within the seal bore of a pocket to one side of a bore through a mandrel connectable in the well string. The mandrel has a recess above the seal bore to receive latching dogs on the lower end of collet fingers carried by the device and an upwardly facing shoulder above the recess which engages the latching dogs to cause them to be flexed inwardly as they are lowered into positions opposite the recess.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.