Low mass direct acting hydraulic valve lifter
US5230308A · kind A · utility
2Cited by
5References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1992 |
| Grant date | Jul 27, 1993 |
| Priority date | — |
| Expiry date | Nov 17, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2107
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A direct acting hydraulic valve lifter features in a preferred embodiment a follower assembled with a thin wall metal shell and a light plastic baffle to support a lash adjusting hydraulic element assembly. An inlet riser chamber has sufficient cross section to minimize oil flow restriction in cold oil conditions. Dead space between the shell and baffle is filled with a strong lightweight foam to support and retain the baffle and displace oil for low mass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.