# US 11,999,189 B2 · Brake disc arrangement > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,999,189 B2 - Document ID: US11999189B2 - Status: Granted - Kind: B2 - Application number: 17/291,877 - Filed: 2019-12-02 - Published: 2022-01-06 - Granted: 2024-06-04 - Earliest claimed: 2018-12-05 - Assignees: SAF-HOLLAND GmbH - Applicants: SAF-HOLLAND GmbH - Inventors: Mark Hartmann - Web page: https://patentgrep.com/patent/US11999189B2 ## CPC - B60B 27/0052: {the element being a brake disc} - F16D 65/123: {comprising an annular disc secured to a hub member; Discs characterised by means for mounting} - F16D 2065/1316: {radially segmented} - F16D 2065/1328: {internal cavities, e.g. cooling channels} - F16D 2065/136: {with relative movement radially} - F16D 2065/1376: {inner circumference} - F16D 2065/1384: {to wheel hub} - F16D 2065/1392: {Connection elements} - B60B: VEHICLE WHEELS (making wheels or wheel parts by rolling B21H1/00, by forging, hammering or pressing B21K1/28); CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES ## Abstract A hub configured to rotate about an axis of rotation in the circumferential direction, and having a connection surface and a connection opening, the connection opening configured to at least partially receive a connector, the connection surface configured to contact indirectly and/or directly with a contact surface of a brake disc, where the contact surface does not include connection openings. ## Claims ### Claim 1 A brake disc arrangement, comprising a brake disc configured to rotate about an axis of rotation in a circumferential direction, the brake disc having a contact surface and a mounting surface; a hub having a connection surface and a connection opening; and at least one connector; wherein a mounting opening extends from the mounting surface; wherein the contact surface is configured to indirectly or directly contact the connection surface of the hub; wherein the connector is configured to extend at least partially in the mounting opening and the connection opening; and wherein the mounting surface is free of hub contact. ### Claim 2 (depends on 1) The brake disc arrangement according to claim 1, wherein the hub comprises a core portion, a cantilever portion and a brake disc connection portion, the cantilever portion and the brake disc connection portion extend radially in a radial direction from the core portion, the cantilever portion comprises a wheel contact surface and at least one connection opening, and wherein the brake disc connection portion comprises at least one contact surface. ### Claim 3 (depends on 2) The brake disc arrangement according to claim 2, wherein the core portion includes an intermediate portion which lies in a direction of the axis of rotation between the cantilever portion and the brake disc connection portion, and wherein the intermediate portion does not include ribs. ### Claim 4 (depends on 3) The brake disc arrangement according to claim 3, wherein the intermediate portion has a more tapered outer geometry compared to the cantilever portion and/or compared to the brake disc connection portion. ### Claim 5 (depends on 1) The brake disc arrangement according to claim 1, wherein a ratio of a mean distance of the contact surface from the axis of rotation to a mean distance of the mounting opening from the axis of rotation is in a range of 0.6 to 1.5. ### Claim 6 (depends on 5) The back disc arrangement of claim 5, wherein the range is 0.8 to 1.2. ### Claim 7 (depends on 6) The back disc arrangement of claim 6, wherein the range is 0.9 to 1.1. ### Claim 8 (depends on 1) The brake disc arrangement according to claim 1, wherein a ratio of a maximum extension of the brake disc in a direction of the axis of rotation to a maximum extension of the hub in the direction of the axis of rotation is in a range of 0.07 to 0.5. ### Claim 9 (depends on 8) The brake disc arrangement of claim 8, wherein the range is 0.1 to 0.3. ### Claim 10 (depends on 9) The brake disc arrangement of claim 9, wherein the range is 0.15 to 0.25. ### Claim 11 (depends on 1) The brake disc arrangement according to claim 1, wherein a ratio of a maximum extension of the connector to a maximum extension of the hub in a direction of the axis of rotation is in a range of 0.3 to 1.1. ### Claim 12 (depends on 11) The brake disc arrangement of claim 11, wherein the range is 0.5 to 0.95. ### Claim 13 (depends on 12) The brake disc arrangement of claim 12, wherein the range is 0.7 to 0.85. ### Claim 14 (depends on 1) The brake disc arrangement according to claim 1, wherein the brake disc has projections projecting in a direction of the axis of rotation and/or in a radial direction, at least one mounting surface forms a part of a projection, and wherein the mounting surface forms an edging end face for the projection in the direction of the axis of rotation. ### Claim 15 (depends on 14) The brake disc arrangement according to claim 14, wherein the projections are engageable with a complementary toothing of the hub. ### Claim 16 (depends on 1) The brake disc arrangement according to claim 1, wherein the brake disc and the hub are configured to be torquingly connected via a polygonal connection. ### Claim 17 (depends on 16) The brake disc arrangement according to claim 16, wherein a toothing of the brake disc has a play in the circumferential direction relative to a toothing of the hub of between 0.1 mm and 2 mm, and/or wherein the polygon connection has a play in the circumferential direction, in particular between 0.1 mm and 2 mm. ### Claim 18 (depends on 1) The brake disc arrangement according to claim 1, wherein the hub is one piece. ### Claim 19 (depends on 1) The brake disc arrangement according to claim 1, wherein the intermediate portion, in at least one cutting plane the normal of which is parallel to the axis of rotation, forms a cross-section which has a circular outer contour around the axis of rotation. ### Claim 20 (depends on 1) The brake disc arrangement according to claim 1, wherein the hub has ribs which preferably run in a direction of a radial direction and/or in a direction of the axis of rotation, at least one connection surface forms part of a respective rib, and wherein the ribs extend only in the brake disc connection portion. ### Claim 21 (depends on 1) The brake disc arrangement according to claim 1, wherein the hub has a wheel bolt receptacle in the cantilever portion. ### Claim 22 (depends on 1) The brake disc arrangement according to claim 1, wherein at least one connection opening, completely penetrates the cantilever portion of the hub. ### Claim 23 (depends on 1) The brake disc arrangement according to claim 1, wherein the hub has air ducts which extend in a direction of the axis of rotation. ### Claim 24 (depends on 1) The brake disc arrangement according to claim 1, wherein the hub has at least one bearing contact surface, for a wheel bearing, and wherein the core portion includes the at least one bearing contact surface. ### Claim 25 (depends on 1) The brake disc arrangement according to claim 1, wherein the at least one bearing contact surface includes at least two bearing contact surfaces. ### Claim 26 (depends on 1) The brake disc arrangement according to claim 1, wherein the hub has at least one centering projection, and wherein the at least one centering projection delimits a connection surface in an outward direction of a radial direction. ### Claim 27 (depends on 1) The brake disc arrangement according to claim 1, wherein the hub has a plurality of connection surfaces, and wherein each of the connection surfaces is bounded in an outward direction of a radial direction by a centering projection. ### Claim 28 (depends on 1) The brake disc arrangement according to claim 1, wherein the contact surface is one of a plurality of contact surfaces, and wherein the mounting surfaces is one of a plurality of mounting surfaces, and wherein the plurality of contact surfaces and the plurality of mounting surfaces are arranged alternately in the circumferential direction. ### Claim 29 (depends on 1) The brake disc arrangement according to claim 1, wherein the mounting opening is one of a plurality of mounting openings, and wherein a distance of each of the mounting openings from the axis of rotation is greater than a mean distance of the contact surface from the axis of rotation. ### Claim 30 (depends on 1) The brake disc arrangement according to claim 1, wherein the contact surface and/or the connection surface has/have an averaged normal substantially parallel to a direction of extension of the connector and/or to the axis of rotation. ### Claim 31 (depends on 1) The brake disc arrangement according to claim 1, wherein the mounting opening completely penetrates the brake disc. ### Claim 32 (depends on 1) The brake disc arrangement according to claim 1, wherein the brake disc is bent and/or V-shaped and/or shielded in a direction of a radial direction, at least in a non-assembled state, away from the wheel hub. ### Claim 33 (depends on 1) The brake disc arrangement according to claim 1, wherein the brake disc is transversely ventilated.