公开(公告)号：US2045213A

公开(公告)日：1936-06-23

申请号：US3068235

申请日：1935-07-10

Applicant: JOSEPH CHARLES

Inventor： JOSEPH CHARLES

IPC: A45D2/32

CPC classification number: A45D2/32

公开(公告)号：US3875911A

公开(公告)日：1975-04-08

申请号：US38606773

申请日：1973-08-06

Applicant: JOSEPH CHARLES

Inventor： JOSEPH CHARLES

IPC: F01L1/245 ,  F01M9/10 ,  F01L1/14

CPC classification number: F01M9/104 ,  F01L1/245

Abstract: A hydraulic tappet is so constructed that the socket for the hollow pushrod is of two diameters, the lower portion being of smaller diameter and thereby providing a clearance space of increased radial width and bounding an intermediate reservoir space with the body wall between the larger oil entry reservoir and the radially narrower clearance space about the upper part of the socket of larger diameter. The clearance space about the upper part of the socket immediately above the lower part of reduced diameter leads to a collecting groove, the axial height of such clearance varying throughout the cycle. The central bore of the socket leading from the pushrod seat extends a considerable distance below the transverse bore leading from the collecting groove to provide an oil reservoir which supplies the hollow pushrod immediately upon start of the engine. The central bore stops short of the bottom of the socket, and the tappet is devoid of a disc valve at said socket bottom.