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US 8,474,425 B2Granted
Switchable roller finger follower
AssigneeSchaeffler Technologies AG & Co. KG
InventorLutz Kirbach
Life of this patent
Estimating the term…
Abstract
The finger follower employs two independent lost motion arms and a rod which moves longitudinally to lock both arms. The rod is transversely mounted in the follower. In order to avoid premature locking, a clip is employed with tabs that interact with end surfaces of the arms so as to prevent premature movement of the rod from an unlocked position to a locked position.
Claims8
A switchable finger follower for a valve train of an internal combustion engine, comprising:
- a longitudinally extending, inner lever having a bottom wall with a valve stem support at one end of the lever and a lash adjuster contact surface at the other end of the lever and a slot extending through the lever from the bottom wall to a top wall of the lever;
- a roller mounted in the slot;
- two separate, longitudinally extending outer arms, one end of each of the arms pivotally mounted at the one end of the lever, one of each of the arms mounted along one longitudinal sidewall of the lever and the other end of each of the arms extending towards the other end of the lever, each of the arms moving between a down position and a base position;
- a spring means for restoring the arms to the base position;
- and
- a coupling element mounted in a lateral end wall of the other end of the inner lever, the coupling element having a rod extending laterally from each longitudinal side wall of the inner lever, the rod being movable in a longitudinal direction of the inner lever into and out of engagement with a locking surface at the other end of the arms to lock and unlock the arms in the base position.
3 more elements
Dependencies are inferred from the claim text.