# US 11,028,891 B2 · Vented brake disc > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,028,891 B2 - Document ID: US11028891B2 - Status: Granted - Kind: B2 - Application number: 16/152,677 - Filed: 2018-10-05 - Published: 2019-04-11 - Granted: 2021-06-08 - Earliest claimed: 2017-10-11 - Assignees: Kwangjin Michael Lee - Applicants: Kwangjin Michael Lee - Inventors: Kwangjin Michael Lee; Byungchang Lee; Sungmin Lee; Bongjoon Kim - Web page: https://patentgrep.com/patent/US11028891B2 ## CPC - F16D 65/128: {characterised by means for cooling} - B32B 3/08: characterised by added members at particular parts {(layer formed of separate pieces of material which are juxtaposed side-by-side B32B3/14, B32B3/18)} - B32B 3/085: {spaced apart pieces on the surface of a layer} - B32B 7/05: the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection (using interposed adhesives or bonding materials applied in spaced arrangements B32B7/14) - B32B 15/01: all layers being exclusively metallic {(making layered metal workpieces by pressure cladding B23K20/22; making coatings with a metallic material characterised by its composition C23C30/00)} - F16D 65/123: {comprising an annular disc secured to a hub member; Discs characterised by means for mounting} - B32B 2250/02: 2 layers - B32B 2605/00: Vehicles - F16D 2065/132: {layered} - F16D 2065/1328: {internal cavities, e.g. cooling channels} - F16D 2065/1388: {to shaft or axle} - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM ## Abstract A vented brake disc according to the present disclosure comprises a first braking plate having a first inner surface and a first outer surface; a second braking plate parallel with and spaced apart from the first braking plate, the second braking plate having a second outer surface, and a second inner surface facing the first inner surface; a plurality of channels defined by two walls adjacent to each other, the channels communicating with the inner peripheral space of the first braking plate and with the inner peripheral space of the second braking plate; a hat portion having a mounting surface and a peripheral portion extended axially from the mounting surface; a first blocking part preventing outboard communication of any one of the channels, the first blocking part connecting the peripheral portion to the first braking plate; and a second blocking part preventing inboard communication of the channel adjacent to the channel where the outboard communication is prevented by the first blocking part, the second blocking part connecting the peripheral portion to the second braking plate. The channels are provided between the first inner surface of the first braking plate and the second inner surface of the second braking plate. The first blocking part and the second blocking part are provided along the peripheral portion. ## Claims ### Claim 1 A vented brake disc comprising: a first braking plate having a first inner flat surface and a first outer flat surface; a second braking plate parallel with and spaced apart from the first braking plate, the second braking plate having a second outer flat surface, and a second inner flat surface facing the first inner flat surface; a plurality of channels, wherein each of the plurality of channels is defined by the first inner flat surface, the second inner flat surface, and two adjacent walls provided between the first inner flat surface and the second inner flat surface; a hat portion having a mounting surface and a peripheral portion extended axially from the mounting surface; a first blocking part provided for a first set of channels among the plurality of channels, the first blocking part connecting the peripheral portion to the first braking plate and excluding an air-flow from an outboard side to the first set of channels; and a second blocking part provided for a second set of channels among the plurality of channels, the second blocking part connecting the peripheral portion to the second braking plate and excluding an air-flow from an inboard side to the second set of channels, wherein the first blocking part and the second blocking part are provided along the peripheral portion, wherein a first air-flow enters the first set of channels from the inboard side and flows radially outward, wherein a second air-flow enters the second set of channels from the outboard side and flows radially outward, and wherein the first air-flow and the second air-flow radially exit the vented brake disc through openings formed between the first braking plate and the second braking plate without being mixed with each other. ### Claim 2 (depends on 1) The vented brake disc according to claim 1, wherein the first blocking part and the second blocking part are provided alternately to each other along the peripheral portion in a tangential direction. ### Claim 3 (depends on 1) The vented brake disc according to claim 1, wherein the walls are radially extended. ### Claim 4 (depends on 1) The vented brake disc according to claim 1, wherein the hat portion is a separate body from the first braking plate and the second braking plate. ### Claim 5 (depends on 1) The vented brake disc according to claim 1, wherein the walls have shapes of any one of linear, curved, and pillar-shaped vanes. ### Claim 6 (depends on 1) The vented brake disc according to claim 1, wherein a number of the first set of channels is equal to a number of the second set of channels, and wherein sectional areas of the first set of channels are different from sectional areas of the second set of channels. ### Claim 7 (depends on 2) The vented brake disc according to claim 2, wherein the walls are radially extended. ### Claim 8 (depends on 2) The vented brake disc according to claim 2, wherein the hat portion is a separate body from the first braking plate and the second braking plate. ### Claim 9 (depends on 2) The vented brake disc according to claim 2, wherein the walls have shapes of any one of linear, curved, and pillar-shaped vanes. ### Claim 10 (depends on 2) The vented brake disc according to claim 2, wherein a number of the first set of channels is equal to a number of the second set of channels, and wherein sectional areas of the first set of channels are different from sectional areas of the second set of channels.