Hydraulic tappet for controlling an internal combustion engine valve
US4610225A · kind A · utility
9Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1985 |
| Grant date | Sep 9, 1986 |
| Priority date | — |
| Expiry date | Mar 26, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2309/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
There is disclosed a hydraulic tappet comprising a bucket element which slides inside a seat and houses a second bucket element that slides over an annular member integral with the first bucket element in such a manner as to form a first chamber. A deformable annular element is arranged around the second bucket element in such a manner so as to form a second fluid tight chamber connected hydraulically to the first chamber. The chambers are filled with drive fluid and the passage of the fluid from the second chamber to the first chamber is controlled by an on-off member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.