ApplicationNo. 06/451006 filed on 12/20/1982
US Classes:123/90.35, Tappet as conduit123/90.46, Hydraulic123/90.55Hydraulic
ExaminersPrimary: Lazarus, Ira S.
Assistant: Bailey, R. S.
Attorney, Agent or Firm
International ClassesF01L 1/20 (20060101)
F01L 1/24 (20060101)
AbstractA 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.