Sliding parts
US9494239B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2012 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Oct 14, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3408
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A plurality of circumferentially separated sealed-fluid-accommodating blocks are formed on either of the sealing faces of a stationary ring or rotating ring so as to communicate with a sealed fluid-containing space; pumping areas for generating a pumping action due to the sliding of the stationary ring and the rotating ring in relative rotation are formed on the bottom of the plurality of sealed-fluid-accommodating blocks; the pumping areas formed on the bottom of the plurality of sealed-fluid-accommodating blocks are provided with intake pumping areas operating in a direction so as to draw in the sealed fluid and outflow pumping areas operating in a direction so as to expel the sealed fluid; and a plurality of dimples are disposed on a seal dam area on a side of the sealing face on which the sealed-fluid-accommodating blocks are formed, the seal dam area being on the opposite side of the sealing face relative to the sealed-fluid side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.