Sliding parts
US9151390B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2012 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Aug 13, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/342
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Sliding parts are provided wherein a plurality of pumping areas for generating pumping action via the relative rotational sliding of a stationary ring and a rotating ring is discontinuously formed in a circumferential direction on a sealing face of one of the stationary ring and rotating ring so as to communicate with a sealed fluid-containing space. The pumping areas are provided with intake pumping areas operating in a direction in which the sealed fluid is drawn in and outflow pumping areas operating in a direction in which the sealed fluid is expelled. A plurality of dynamic pressure-generating grooves for generating dynamic pressure via the relative rotational sliding of the stationary ring and the rotating ring are formed in a circumferential direction on a sealing face of the other of the stationary ring and the rotating ring so as to communicate with the sealed fluid-containing space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.