Hydraulic lash adjuster oil metering ball valve
US4481913A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1982 |
| Grant date | Nov 13, 1984 |
| Priority date | — |
| Expiry date | Dec 20, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L1/2405
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A hydraulic lash adjuster has a cylindrical body and a hollow plunger slidably received within the body, with the upper portion of the plunger extending beyond the body and it is provided with a semi-spherical thrust end for sliding engagement with a complementary shaped thrust receiving member. The plunger has an internal oil reservoir supplied with oil at a predetermined pressure and the thrust end is provided with a through bore for the flow of oil therethrough to effect lubrication of the thrust surfaces. A metering valve assembly is positioned in the bore and includes a ball valve operatively received in a cup-shaped valve retainer having a clover-shaped aperture in the base, the ball valve cooperating with this aperture to control oil from the reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.