# US 2009/0260943 A1 · Clutch unit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2009/0260943 A1 - Document ID: US20090260943A1 - Status: Published application - Kind: A1 - Application number: 12/384,474 - Filed: 2009-04-04 - Published: 2009-10-22 - Earliest claimed: 2008-04-04 - Assignees: LuK Lamellen und Kupplungsbau Beteiligungs GK - Inventors: Mavinkal Jayaram; Philip George; Jeffrey Hemphill - Web page: https://patentgrep.com/patent/US20090260943A1 ## CPC - F16D 13/56: in which the clutching pressure is produced by springs only - F16D 23/143: {Arrangements or details for the connection between the release bearing and the diaphragm} - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES ## Abstract A clutch unit with a clutch hub mounted non-rotatably on a shaft. The clutch unit includes at least two clutch elements that can be brought into frictional engagement with one another for torque transmission when the clutch unit is actuated by a mechanical actuation device with the help of cable-pull. The mechanical actuation device is attached to and held on the clutch unit. ## Claims ### Claim 1 A clutch unit comprising: a clutch hub that is mounted non-rotatably on a shaft and includes at least two clutch elements that can be brought in frictional engagement with one another for torque transmission when the clutch unit is actuated with the help of cable-pull by means of a mechanical actuation device, wherein the actuation device is attached to and held on the clutch unit. ### Claim 2 (depends on 1) A clutch unit according to claim 1, wherein the actuation device together with the clutch unit is mounted on the shaft. ### Claim 3 (depends on 1) A clutch unit according to claim 1, wherein the actuation device is supported axially on a clutch cover. ### Claim 4 (depends on 3) A clutch unit according to claim 3, wherein the actuation device is clamped axially between the clutch cover and a diaphragm spring. ### Claim 5 (depends on 3) A clutch unit according to claim 3, wherein the actuation device includes a housing body with a housing collar that is supported axially on the clutch cover. ### Claim 6 (depends on 5) A clutch unit according to claim 5, wherein an axial bearing device is disposed axially between the housing collar and the clutch cover. ### Claim 7 (depends on 5) A clutch unit according to claim 5, wherein the housing body is mounted rotatably on the clutch cover by means of a bearing bush. ### Claim 8 (depends on 5) A clutch unit according to claim 5, wherein a cable-pull holding device is attached to the housing body and includes a cable sheath socket. ### Claim 9 (depends on 8) A clutch unit according to claim 8, wherein the housing body includes housing ramps and an annular space accommodating the actuation body and the housing ramps that interact with actuation ramps attached to an actuation body to which a cable-pull is attached. ### Claim 10 (depends on 9) A clutch unit according to claim 9, wherein the cable-pull is hung in a cable-pull adapter that is hinged on the actuation body. ### Claim 11 (depends on 9) A clutch unit according to claim 9, wherein balls are disposed between the actuation ramps of the actuation body and the housing ramps of the housing body. ### Claim 12 (depends on 11) A clutch unit according to claim 11, wherein the balls are held rotatably inside a ball-holding body such that they lie both on the actuation ramps of the actuation body and on the housing ramps of the housing body. ### Claim 13 (depends on 9) A clutch unit according to claim 9, wherein the actuation body is mounted rotatably inside the housing body with a bearing body, and the bearing body includes a bearing race that is disposed in the radial direction between the housing body and the actuation body. ### Claim 14 (depends on 13) A clutch unit according to claim 13, wherein the bearing body includes a bearing collar interacting axially with an adapter-ring body. ### Claim 15 (depends on 14) A clutch unit according to claim 14, wherein an axial bearing device is disposed axially between a shoulder of the adapter-ring body and the bearing collar of the bearing body. ### Claim 16 (depends on 14) A clutch unit according to claim 14, wherein the adapter-ring body includes an adapter collar on which diaphragm spring tongues of the diaphragm spring lie. ### Claim 17 (depends on 3) A clutch unit according to claim 3, wherein the actuation device includes a housing body with an axial guide section on which an actuation body is guided such that it is movable axially to-and-fro. ### Claim 18 (depends on 17) A clutch unit according to claim 17, wherein a cable-pull device with a cable sheath socket for a cable sheath through which a cable-pull extends is attached to the housing body. ### Claim 19 (depends on 18) A clutch unit according to claim 18, wherein the housing body features a circumferential guide section on which a cable-pull socket for the cable-pull is disposed rotatably and the cable-pull coiling element features a cable-pull receptacle for said control. ### Claim 20 (depends on 19) A clutch unit according to claim 19, wherein the cable-pull coiling element includes a cable-pull coiling section on which a piece of cable can be coiled, and the cable-pull coiling element includes a cable-pull receptacle groove for said control. ### Claim 21 (depends on 19) A clutch unit according to claim 19, wherein the cable-pull socket includes a collar that is supported axially on the clutch cover. ### Claim 22 (depends on 21) A clutch unit according to claim 21, wherein an axial bearing device is disposed axially between the housing collar and the clutch cover. ### Claim 23 (depends on 21) A clutch unit according to claim 21, wherein a bearing bush is disposed radially between the cable-pull socket and the clutch cover. ### Claim 24 (depends on 21) A clutch unit according to claim 21, wherein the collar includes ramps that interact with actuation ramps attached to the actuation body. ### Claim 25 (depends on 24) A clutch unit according to claim 24, wherein balls are disposed between the actuation ramps of the actuation body and the ramps of the cable-pull socket. ### Claim 26 (depends on 25) A clutch unit according to claim 25, wherein the balls are held rotatably inside a ball-holding body such that they lie both on the actuation ramps of the actuation body as well as on the housing ramps of the cable-pull socket. ### Claim 27 (depends on 24) A clutch unit according to claim 24, wherein the actuation body includes an actuation collar on which the actuation ramps are provided and the actuation collar of the actuation body interacts with the diaphragm spring. ### Claim 28 (depends on 27) A clutch unit according to claim 27, wherein the actuation body includes an axial guide section with which the actuation body is guided such that it is movable axially to-and-fro on the housing body. ### Claim 29 (depends on 27) A clutch unit according to claim 27, wherein an adapter-ring body is disposed axially between the diaphragm spring and the actuation collar. ### Claim 30 (depends on 29) A clutch unit according to claim 29, wherein an axial bearing is disposed axially between the actuation collar of the actuation body and a shoulder of the adapter-ring body. ### Claim 31 (depends on 30) A clutch unit according to claim 30, wherein an axial spring is disposed axially between the shoulder of an adapter-ring body and the axial bearing. ### Claim 32 (depends on 29) A clutch unit according to claim 29, wherein the adapter-ring body includes an adapter-ring collar on which diaphragm spring tongues of the diaphragm spring lie. ### Claim 33 (depends on 4) A clutch unit according to claim 4, wherein the diaphragm spring is installed under initial stress such that the clutch elements are held in frictional engagement so long as the actuation device is not actuated by the cable-pull. ### Claim 34 (depends on 1) A clutch unit according to claim 1, wherein the actuation device is actuated via the cable-pull by means of a hand-activated lever.