Piston ring for a piston compressor, and piston compressor
US11193587B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 21, 2017 |
| Grant date | Dec 7, 2021 |
| Priority date | — |
| Expiry date | Apr 18, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/28
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Piston ring having an endless base ring and sealing ring have a radially outwardly directed base ring face side. The sealing ring has a radially inwardly directed, circularly running sealing ring inner side with three tangential cuts separating three sealing ring segments are arranged in a circumferential direction (U). The base and sealing rings are arranged in succession in a longitudinal direction (L). A top ring is arranged to adjoin the sealing ring having a top ring has a radially outwardly directed top ring outer side and a radially inwardly directed top ring inner side. The top ring has, on the side opposite the sealing ring, a radially running return flow channel extending radially, the sealing face side protrudes in a radial direction beyond the top ring outer side and the base ring face side. The base and the top rings have a greater tensile strength than the sealing ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.