Inflatable packer inner bladder retention and seal
US5390738A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1992 |
| Grant date | Feb 21, 1995 |
| Priority date | — |
| Expiry date | Nov 25, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/1277
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Bladder retention for an inflatable packer includes a tubular base and a retainer member. Retainer teeth are provided on both the tubular base and the retainer member to retain the bladder against the axial loads of inflation. Separate sealing ribs are provided on at least one of the tubular base and retainer member which positively engage a portion of the bladder which is not subjected to longitudinal stresses due to its location outwardly of the retainer teeth. Additionally, an elastomeric o-ring seal is provided between the retainer member and the tubular base thereby blocking the application of pressure forces tending to disengage the elastomeric bladder from its retention assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.