Inner element for a hydraulic valve play compensating element

Claim 1

An internal element for a hydraulic valve play compensating element for internal combustion engines, the internal element comprising a cylinder element closed at one end and being guided for longitudinal displacement in a guide bore of a casing with a closed end, a piston element being guided for longitudinal displacement in the cylinder element and projecting beyond the open end thereof with its one end having a reduced outer diameter and abutting the closed end of the guide bore and a sheet-metal cap having a substantially axially extending collar and a radial flange, the sheet-metal cap by means of its collar being fitted on the open end of the cylinder element having a reduced outer diameter with an additional diameter reduction in the form of a circumferential groove into which the collar engages positively at some circumferential places at least and by means of its flange engaging the one end of the piston element having a reduced outer diameter, the sheet-metal cap also having at at least one place of its circumference a projection radially protruding beyond the outer diameter of the cylinder element and engaging a zone of enlarged diameter of the guide bore located near the closed end thereof.