Hydraulic lash adjuster oil metering ball valve
Patent 4481913 Issued on November 13, 1984. Estimated Expiration Date: 
December 20, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 20, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorAssigneeApplicationNo. 06/451006 filed on 12/20/1982US Classes:123/90.35, Tappet as conduit123/90.46, Hydraulic123/90.55HydraulicExaminersPrimary: Lazarus, Ira S.Assistant: Bailey, R. S. Attorney, Agent or FirmInternational 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. | |
