Patent ID: 7685984

Claim:
A switchable valve train member for deactivating an associated valve in an internal combustion engine, comprising: a) a body having a first axial bore, a lock pin engagement feature and a stepped counterbore at an end of said body; b) a pin housing slidably disposed in said first axial bore and having a second axial bore and having a transverse bore through said pin housing; c) a plunger slidably disposed in said pin housing for engaging a valve actuator; d) at least one locking pin slidably disposed in said transverse bore, said at least one locking pin having an outer end for selectively engaging said lock pin engagement feature in said body; e) a lost motion spring for urging relative motion between said body and said pin housing; f) a lash ring disposed in said stepped counterbore and secured to said body, said lash ring having a first portion thereof disposed in said first axial bore to act as a travel limiting stop for said pin housing, wherein the axial length of said first portion is selected to provide a predetermined amount of internal mechanical lash in said switchable valve train member.