# US 2018/0023633 A1 · Clutch plate assembly with friction material flap > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0023633 A1 - Document ID: US20180023633A1 - Status: Published application - Kind: A1 - Application number: 15/655,681 - Filed: 2017-07-20 - Published: 2018-01-25 - Earliest claimed: 2016-07-21 - Assignees: Schaeffler Technologies AG & Co. KG - Applicants: Schaeffler Technologies AG & Co. KG - Inventors: Patrick Lindemann; David Avins - Web page: https://patentgrep.com/patent/US20180023633A1 ## CPC - F16D 13/68: Attachments of plates or lamellae to their supports {(one or more discs connected to the linings transmitting torque to one or more discs connected to the hub by helical springs in windows in the discs, i.e. rotary vibration dampers F16F15/12)} - F16D 13/585: {Arrangements or details relating to the mounting or support of the diaphragm on the clutch on the clutch cover or the pressure plate} - F16D 69/0416: {specially adapted for curved linings} - F16H 41/24: Details - F16H 45/02: with mechanical clutches for bridging a fluid gearing of the hydrokinetic type (control of torque converter lock-up clutches F16H61/14) - F16D 13/64: Clutch-plates; Clutch-lamellae (brake-plates, brake-lamellae F16D65/12) - F16D 13/66: of conical shape - F16D 65/127: {characterised by properties of the disc surface; Discs lined with friction material} - F16D 2065/132: {layered} - F16D 2069/0441: {Mechanical interlocking, e.g. roughened lining carrier, mating profiles on friction material and lining carrier} - F16D 2069/045: {Bonding} - F16D 2300/08: Details or arrangements of sealings not provided for in group F16D3/84 - F16H 2045/0205: {two chamber system, i.e. without a separated, closed chamber specially adapted for actuating a lock-up clutch} - F16H 2045/0221: {with damping means} - F16H 2045/0278: {comprising only two co-acting friction surfaces} - F16H 2045/0289: {Details of friction surfaces of the lock-up clutch} - F16H 2045/0294: {Single disk type lock-up clutch, i.e. using a single disc engaged between friction members} - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES - F16H: GEARING ## Abstract A clutch plate assembly includes a central axis, a clutch plate with a first friction surface and a radially outer depressed portion, and a friction material ring. The friction material ring is bonded to the first friction surface and extends radially outside of the first friction surface such that an outer portion of the friction material ring is axially aligned with the clutch plate radially outer depressed portion. In an example embodiment, the first friction surface is disposed at an acute angle to a plane orthogonal to the central axis. In some example embodiments, the first friction surface is conical. In an example embodiment, the radially outer depressed portion is conical and axially offset from the first friction surface. In an example embodiment, the radially outer depressed portion is manufactured by machining, stamping, or coining. ## Claims ### Claim 1 A clutch plate assembly comprising: a central axis; a clutch plate comprising a first friction surface and a radially outer depressed portion; and, a friction material ring bonded to the first friction surface and extending radially outside of the first friction surface such that an outer portion of the friction material ring is axially aligned with the clutch plate radially outer depressed portion. ### Claim 2 (depends on 1) The clutch plate assembly of claim 1 wherein the first friction surface is disposed at an acute angle to a plane orthogonal to the central axis. ### Claim 3 (depends on 1) The clutch plate assembly of claim 1 wherein the first friction surface is conical. ### Claim 4 (depends on 3) The clutch plate assembly of claim 3 wherein the radially outer depressed portion is conical and axially offset from the first friction surface. ### Claim 5 (depends on 1) The clutch plate assembly of claim 1 wherein the radially outer depressed portion is manufactured by machining, stamping, or coining. ### Claim 6 (depends on 1) The clutch plate assembly of claim 1 further comprising a gap between the radially outer depressed portion and the friction material ring. ### Claim 7 (depends on 6) The clutch plate assembly of claim 6 further comprising a resilient element disposed in the gap. ### Claim 8 (depends on 7) The clutch plate assembly of claim 7 wherein the resilient element is a diaphragm spring. ### Claim 9 (depends on 7) The clutch plate assembly of claim 7 wherein the clutch plate comprises an outer lip for retaining the resilient element. ### Claim 10 (depends on 1) The clutch plate assembly of claim 1 wherein the friction material ring comprises a first portion with a first compressed thickness and a second portion with a second compressed thickness, greater than the first compressed thickness. ### Claim 11 (depends on 10) The clutch plate assembly of claim 10 wherein at least a portion of the first portion is axially aligned with the first friction surface and at least a portion of the second portion is axially aligned with the radially outer depressed portion. ### Claim 12 (depends on 1) A turbine assembly comprising: a shell comprising the clutch plate assembly of claim 1; and, a plurality of blades fixed to the shell. ### Claim 13 (depends on 12) A torque converter comprising the turbine assembly of claim 12. ### Claim 14 (depends on 10) A torque converter comprising the clutch plate assembly of claim 10. ### Claim 15 (depends on 14) The torque converter of claim 14 further comprising a housing, wherein: only the second portion of the friction material ring contacts the housing when the clutch plate assembly is in a disengaged state; and, the first and second portions of the friction material ring contact the housing when the clutch plate assembly is in an engaged state. ### Claim 16 (depends on 15) The torque converter of claim 15 wherein the housing comprises a second friction surface and the second portion of the friction material ring is arranged to contact the second friction surface. ### Claim 17 (depends on 15) The torque converter of claim 15 wherein the second portion of the friction material ring is arranged to contact a radiused portion of the housing.