Rotatable flange union for use with vacuum systems
US5382058A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1993 |
| Grant date | Jan 17, 1995 |
| Priority date | — |
| Expiry date | Jun 17, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L27/08
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A rotatable flange union for use with vacuum systems includes a first flange, a second flange and a connector which connects the first flange to the second flange and allows the first flange to rotate 360 degrees with respect to the second flange. In the preferred embodiment, tubing of the first flange is placed within tubing of the second flange. Additionally, the connector includes a first quad ring seal, a second quad ring seal, and a cavity in the second flange. The first quad ring seal is in contact with an inner diameter of the second flange and is in contact with an outer diameter of the first flange. The second quad ring seal is in contact with the inner diameter of the second flange and is in contact with the outer diameter of the first flange. The cavity is between the first quad ring seal and the second quad ring seal. The cavity is pumped to a pressure of less than ten millitorr.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.