Columnar hydraulic tappet
US9869212B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 2015 |
| Grant date | Jan 16, 2018 |
| Priority date | — |
| Expiry date | Jun 4, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L1/2405
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A columnar hydraulic tappet comprises a housing, in which a plunger is correspondingly mounted. A high-pressure chamber extends between a lower end surface of the plunger and a lower side of the housing. An outer ring groove is disposed on the outer diameter of the housing, an inner ring groove is disposed in the radial inner side of the housing, and housing oil feed holes are disposed between the inner ring groove and the outer ring groove. The lower end inside the housing is provided with a grinding wheel groove, an upper end wall of the inner ring groove of the housing is a first internal cylindrical wall, and a housing inner-wall between the lower end of the inner ring groove of the housing and the grinding wheel groove is a second internal cylindrical wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.