# US 8,991,349 B2 · Involute spring pallet component for a cylinder deactivation switchable roller finger follower > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,991,349 B2 - Document ID: US8991349B2 - Status: Granted - Kind: B2 - Application number: 13/754,275 - Filed: 2013-01-30 - Published: 2013-08-08 - Granted: 2015-03-31 - Earliest claimed: 2012-02-03 - Assignees: Schaeffler Technologies AG & Co. KG - Applicants: Schaeffler Technologies AG & Co KG - Inventors: Debora Manther; Jeff Villemure - Web page: https://patentgrep.com/patent/US8991349B2 ## CPC - F01L 1/18: Rocking arms or levers - B21K 1/205: {rocker arms} - F01L 13/0005: {Deactivating valves} - F01L 13/0036: {the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction} - F01L 2303/00: Manufacturing of components used in valve arrangements - F01L 2305/00: Valve arrangements comprising rollers - Y10T 29/49295: Push rod or rocker arm making - F01L: CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES - B21K: MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS (making particular articles by working sheet metal without essentially removing material B21D; processing wire B21F; making pins, needles or nails B21G; making particular articles by rolling B21H; forging machines, pressing machines, hammering machines, in general B21J; making chains B21L; plating B23K) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A method of manufacturing spring pallets of a switchable roller finger follower. The method includes the steps of forming the spring pallets of the roller finger follower as a single unit, forming a material web between the spring pallets, and separating the spring pallets apart from each other. Also, an intermediate assembly of the spring pallets of the roller finger follower is disclosed. The intermediate assembly includes a first spring pallet, a second spring pallet, and a material web which extends between the spring pallets, and adjoins the spring pallets together. Further, a method of manufacturing an inner arm of the switchable roller finger follower is disclosed in which the inner arm is formed by sheet metal, preferably by stamping. ## Claims ### Claim 1 An intermediate assembly of a roller finger follower, comprising: a first spring pallet having a first inner surface; a second spring pallet having a second inner surface; and a material web extending between the first spring pallet and the second spring pallet, adjoining the first spring pallet and the second spring pallet together; the first spring pallet and the second spring pallet are separable and are each adapted for separate assembly onto a discrete arm of the roller finger follower. ### Claim 2 (depends on 1) A method for manufacturing spring pallets, which comprise a first spring pallet having a first inner surface and a second spring pallet having a second inner surface, for a roller finger follower, the method comprising the following steps: forming an intermediate assembly of claim 1 including the first spring pallet and the second spring pallet as a single unit; forming a material web of the intermediate assembly between the first spring pallet and the second spring pallet; and separating the first spring pallet from the second spring pallet. ### Claim 3 (depends on 2) The method of claim 2, wherein the first spring pallet and the second spring pallet are separated by cracking, splitting, or cutting. ### Claim 4 (depends on 2) The method of claim 2, wherein the first spring pallet and the second spring pallet are mirror images of each other. ### Claim 5 (depends on 2) The method of claim 2, wherein the first spring pallet and the second spring pallet are manufactured by fineblanking manufacturing such that the first spring pallet and the second spring pallet are not mirror images of each other. ### Claim 6 (depends on 2) The method of claim 2, wherein the first spring pallet and the second spring pallet are manufactured by casting, forging or metal injection molding. ### Claim 7 (depends on 2) The method of claim 2, further comprising the step of assembling the first spring pallet and the second spring pallet with other components of the roller finger follower after the first spring pallet and the second spring pallet are separated from each other. ### Claim 8 (depends on 2) The method of claim 2, wherein the material web holding the first spring pallet and the second spring pallet together is a seam of material. ### Claim 9 (depends on 1) The intermediate assembly of claim 1, wherein the first spring pallet and the second spring pallet are manufactured by casting, forging or metal injection molding. ### Claim 10 (depends on 1) The intermediate assembly of claim 1, wherein the first spring pallet and the second spring pallet are mirror images of each other. ### Claim 11 (depends on 1) The intermediate assembly of claim 1, wherein the first spring pallet and the second spring pallet are not mirror images of each other. ### Claim 12 (depends on 1) The intermediate assembly of claim 1, wherein the material web holding the first spring pallet and the second spring pallet together is a seam of material. ### Claim 13 (depends on 8) A method for manufacturing an inner arm of a roller finger follower, comprising the following steps: forming the inner arm as a sheet metal component; forming an intermediate assembly an intermediate assembly of claim 8 including the first spring pallet and the second spring pallet as a single unit; forming a material web of the intermediate assembly between the first spring pallet and the second spring pallet; and separating the first spring pallet from the second spring pallet. ### Claim 14 (depends on 13) The method of claim 13, wherein the inner arm is formed by stamping.