Non-contracting bidirectional seal for gaseous rotary machines
US10184473B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2016 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Jan 12, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/4472
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A rotary device has at least one seal arrangement between inner and outer components to constrain fluid flow there between. The seal arrangement has a smooth surface and an opposing surface with a plurality of grooves and lands along a length of the at least one seal with the lands are separated from the smooth surface by a predetermined gap. The grooves have a bottom surface substantially parallel to the smooth surface. The width of the lands is between about 125% to 145% of the width of the grooves. The groove depth is between about 30% to 50% of the width of the grooves. A corner radius between the bottom surface of the grooves and side walls of the grooves is between about 25% to 100% of the depth of the grooves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.