# US 10,119,606 B2 · Valve train retention clip with integrated locking pin anti-rotation feature > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,119,606 B2 - Document ID: US10119606B2 - Status: Granted - Kind: B2 - Application number: 15/446,664 - Filed: 2017-03-01 - Published: 2018-09-06 - Granted: 2018-11-06 - Earliest claimed: 2017-03-01 - Assignees: Schaeffler Technologies AG & Co. KG - Applicants: Schaeffler Technologies AG & Co. KG - Inventors: Faheem Ahmed; Colin Foster; Michael Kugler; Philipp Streit - Web page: https://patentgrep.com/patent/US10119606B2 ## CPC - F16H 53/06: Cam-followers (F16H53/08 takes precedence) - F01L 1/18: Rocking arms or levers - F01L 1/185: {Overhead end-pivot rocking arms} - F01L 1/2405: {by means of a hydraulic adjusting device located between the cylinder head and rocker arm} - F01L 13/0005: {Deactivating valves} - F01L 1/04: by means of cams, camshafts, cam discs, eccentrics or the like (F01L1/10 takes precedence) - F01L 1/12: Transmitting gear between valve drive and valve (simultaneously operating two or more valves F01L1/26) - F01L 1/24: by fluid means, e.g. hydraulically - F01L 2001/186: {Split rocking arms, e.g. rocker arms having two articulated parts and means for varying the relative position of these parts or for selectively connecting the parts to move in unison} - F01L 2001/187: {Clips, e.g. for retaining rocker arm on pivot} - F01L 2001/467: {Lost motion springs} - F01L 2305/00: Valve arrangements comprising rollers - Y10T 74/20882: Rocker arms - F16H: GEARING - F01L: CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A clip for a switchable roller finger follower that includes a retainer for a hydraulic lash adjuster, and an anti-rotation feature that prevents rotation of a coupling pin is provided. The clip includes a first leg arranged adjacent to a dome-shaped recess on a bottom surface of an outer lever of the switchable roller finger follower that includes a retainer for the hydraulic lash adjuster, and a second leg of the clip includes an anti-rotation bar that extends laterally across a part of the coupling pin and prevents rotation of the coupling pin. A switchable finger follower with the clip is also provided. ## Claims ### Claim 1 A switchable roller finger follower comprising: an inner lever having a first end and a second end; an outer lever with two outer arms that extend along longitudinal sides of the inner lever and a dome-shaped recess on a bottom surface of the outer lever arranged towards the second end of the inner lever, the inner lever mounted for pivoting movement on the outer lever at the first end of the inner lever by a pivot axle; a coupling device located on one of the inner lever or the outer lever on an end opposite from the pivot axle that includes a coupling pin having a coupling flat, the coupling pin is arranged to move in a longitudinal direction between a locking position, in which the inner lever and the outer lever are connected together for movement at least in an activation direction of a valve, and an unlocked position, in which the inner lever is pivotable relative to the outer lever; a coupling projection with a coupling surface located on the other of the inner lever or the outer lever from the coupling device, the coupling flat of the coupling pin engages with the coupling surface in the locking position; and a clip including a first leg arranged adjacent to the dome-shaped recess on the bottom surface of the outer lever that includes a retainer for a hydraulic lash adjuster, and a second leg including an anti-rotation bar that extends laterally across a part of the coupling pin and prevents rotation of the coupling pin. ### Claim 2 (depends on 1) The switchable roller finger follower of claim 1, wherein the part of the coupling pin that contacts the anti-rotation bar is the coupling flat. ### Claim 3 (depends on 1) The switchable roller finger follower of claim 1, wherein the part of the coupling pin that contacts the anti-rotation bar is a secondary flat located on an opposite side of the coupling pin from the coupling flat. ### Claim 4 (depends on 3) The switchable roller finger follower of claim 3, wherein the secondary flat of the coupling pin and the anti-rotation bar overlap each other in both the locked position and the unlocked position. ### Claim 5 (depends on 1) The switchable roller finger follower of claim 1, wherein the coupling device is located on the outer lever, and the coupling projection is formed on the inner lever. ### Claim 6 (depends on 1) The switchable roller finger follower of claim 1, wherein the anti-rotation bar is formed at a terminal portion of the second leg. ### Claim 7 (depends on 6) The switchable roller finger follower of claim 6, wherein the anti-rotation bar is formed as a bent flange at the terminal portion of the second leg. ### Claim 8 (depends on 1) The switchable roller finger follower of claim 1, wherein the retainer includes a semi-circular edge having a complementary profile adapted to engage under a head of the hydraulic lash adjuster. ### Claim 9 (depends on 1) The switchable roller finger follower of claim 1, further comprising a lost motion spring connected between the inner lever and the outer lever. ### Claim 10 (depends on 1) The switchable roller finger follower of claim 1, wherein the part of the coupling pin and the anti-rotation bar overlap each other in both the locked position and the unlocked position. ### Claim 11 (depends on 1) The switchable roller finger follower of claim 1, wherein the anti-rotation bar and the part of the coupling pin have non-round complementary profiles. ### Claim 12 (depends on 1) The switchable roller finger follower of claim 1, wherein the clip is formed from spring steel. ### Claim 13 (depends on 1) The switchable roller finger follower of claim 1, wherein the clip includes a flat surface that is parallel to the part of the coupling pin. ### Claim 14 A method for retaining a hydraulic lash adjuster and preventing rotation of a coupling pin in a switchable roller finger follower, the method comprising: providing a switchable roller finger follower including an inner lever having a first end and a second end, and an outer lever with two outer arms that extend along longitudinal sides of the inner lever and a dome-shaped recess on a bottom surface of the outer lever arranged towards the second end of the inner lever, the inner lever mounted for pivoting movement on the outer lever at the first end of the inner lever by a pivot axle; arranging a coupling device on one of the inner lever or the outer lever on an end opposite from the pivot axle, the coupling device includes a coupling pin having a coupling flat, the coupling pin is arranged to move in a longitudinal direction between a locking position, in which the inner lever and the outer lever are connected together for movement at least in an activation direction of a valve, and an unlocked position, in which the inner lever is pivotable relative to the outer lever; providing a coupling projection with a coupling surface on the other of the inner lever or the outer lever from the coupling device, the coupling flat of the coupling pin engages with the coupling surface in the locking position; and arranging a clip on the switchable roller finger follower, the clip including a first leg arranged adjacent to the dome-shaped recess on the bottom surface of the outer lever that includes a retainer for a hydraulic lash adjuster, and a second leg of the clip including an anti-rotation bar that extends laterally across a part of the coupling pin and prevents rotation of the coupling pin.