High pressure liquid rotary coupling with slip seal
US6059202A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1998 |
| Grant date | May 9, 2000 |
| Priority date | — |
| Expiry date | Apr 30, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B3/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A high pressure liquid sealing connection between two relatively rotatable liquid passage members of a rotary nozzle or a swivel. The connection is formed by two abutting relatively rotatable annular coaxial sealing members forming a high pressure liquid passage between the relatively rotatable members. Both sealing members are carried and kept coaxial by a seal holder carried by one of the relatively rotatable passage members. Both sealing members are forced axially relative to the seal holder by high pressure liquid flow at the sealing connection to maintain a dynamic sealing relationship between the sealing members and to force one of the sealing members into sealing contact with and rotation with the other of the relatively rotatable passage members. As the other sealing member substantially wears away by relative rotation of the sealing members it is forced axially relative to the seal holder and toward the one sealing member to maintain the sealing integrity of the sealing connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.