Valve operating mechanism including valve lifter
US5284112A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1993 |
| Grant date | Feb 8, 1994 |
| Priority date | — |
| Expiry date | Mar 19, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2107
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve operating mechanism for a reciprocating internal combustion engine. The mechanism comprises a valve lifter made of fiber reinforced plastic and including a cylindrical section. A partition section is integrally connected to the cylindrical section and located perpendicular to the axis of the cylindrical section. The partition section has a lower side at which an end portion of the valve stem of an intake or exhaust valve is to be pushed. At least one coaxial annular shim engagement projection is formed at the upper side of the valve lifter partition section. Each projection is formed with coaxial two shim contacting surfaces. A generally disc-shaped shim is disposed on the upper side of the valve lifter partition section. The shim has an upper side in slidable contact with a cam, and a lower side in contact with the upper side of the valve lifter partition section. At least one lifter engagement groove is formed at the lower side of the shim. Each groove is defined between coaxial two lifter contacting surfaces of the shim. Each projection of the valve lifter partition section is in fitting engagement with each groove of the shim so that the shim contacting surfaces of the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.