Ceramic valve supporting structure in use for internal combustion engine
US4838218A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1987 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Jun 12, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02F2001/008
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A ceramic valve supporting structure for use in an internal combustion engine comprising: a ceramic valve having an integral stem, an upper portion of which is provided with a circular groove therearound; a frusto-conical shaped cotter comprising a pair of semi-cylindrical pieces, each inner surface of which has a lock projection located within said groove when secured to an outer surface of said stem; an annular retainer secured to an outer surface of said cotter to support said valve through said cotter, said retainer having an inner surface tapered to engage the outer surface of said cotter by wedging action due to a spring force acting upon to said retainer to bring said cotter into tight engagement with said stem; and an elastic layer provided between an inner surface of said cotter and the outer surface of said stem to absorb stress when said cotter engages said stem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.