# US 10,309,520 B2 · Snubber with scoop feature for automotive transmission > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,309,520 B2 - Document ID: US10309520B2 - Status: Granted - Kind: B2 - Application number: 15/435,749 - Filed: 2017-02-17 - Published: 2018-08-23 - Granted: 2019-06-04 - Earliest claimed: 2017-02-17 - Assignees: Ford Global Technologies, LLC - Applicants: Ford Global Technologies, LLC - Inventors: Richard Simon Boerema; Vijay Kumar Chimakurthy; Mark Steward; Dengfu Zhang - Web page: https://patentgrep.com/patent/US10309520B2 ## CPC - F16H 57/0423: {Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes} - F16H 7/02: with belts; with V-belts - F16H 7/18: Means for guiding or supporting belts, ropes, or chains (construction of pulleys F16H55/36) - F16H 57/0457: {Splash lubrication} - F16H 57/0489: {with endless flexible members, e.g. belt CVTs} - F16H 2007/185: {the guiding surface in contact with the belt, rope or chain having particular shapes, structures or materials} - F16H: GEARING ## Abstract A snubber for an automotive transmission includes a generally flat surface configured to limit radially-outward movement of a drive member that transfers torque from a transmission gearbox output to a differential input. A mouth of the snubber is fluidly coupled to an internal cavity that capturing transmission fluid as the fluid is moved around due to movement of the drive member. A wing of the snubber extends from the generally flat surface toward the drive member. The wing has a hollow interior fluidly coupled to the internal cavity. A concave outer surface is located outside of and adjacent to the mouth. The concave surface deflects a portion of the fluid, preventing that portion from entering the mouth. This increases the flow of fluid away from the drive member which can lead to drag. ## Claims ### Claim 1 A vehicle comprising: a transmission gearbox output; a differential input; a drive member configured to transfer torque from the output to the input; and a snubber having a surface configured to contact the drive member during rotation of the drive member, the snubber having a mouth leading to an internal cavity for capturing transmission fluid, and a concave surface outside and adjacent to the mouth and configured to deflect fluid away from the snubber. ### Claim 2 (depends on 1) The vehicle of claim 1, wherein the surface is generally flat and is configured to limit radially-outward movement of the drive member. ### Claim 3 (depends on 1) The vehicle of claim 1, wherein the snubber further includes a wing extending from the surface and radially inward of the drive member, the wing defining a hollow chamber in fluid communication with the internal cavity. ### Claim 4 (depends on 3) The vehicle of claim 3, wherein the wing has an end radially inward from the drive member, the end defining an outlet for dispensing the transmission fluid. ### Claim 5 (depends on 1) The vehicle of claim 1, wherein the concave surface has a height that exceeds a height of the mouth. ### Claim 6 (depends on 1) The vehicle of claim 1, wherein the concave surface has an arc length that exceeds a height of the mouth. ### Claim 7 A snubber for an automotive transmission, comprising: a surface defining an open mouth and an internal cavity for capturing transmission fluid; and a concave surface outside of the cavity and adjacent the mouth configured to deflect fluid away from the snubber. ### Claim 8 (depends on 7) The snubber of claim 7, further comprising a generally flat surface configured to contact and limit radially-outward movement of a drive member connecting a transmission gearbox output to a differential input. ### Claim 9 (depends on 8) The snubber of claim 8, further comprising a wing having an outer surface continuous with the generally flat surface and extending radially inward past the drive member. ### Claim 10 (depends on 9) The snubber of claim 9, wherein the wing defines a hollow interior in fluid communication with the internal cavity. ### Claim 11 (depends on 9) The snubber of claim 9, wherein the wing defines an outlet at one end configured to dispense the transmission fluid radially inward from the drive member. ### Claim 12 (depends on 7) The snubber of claim 7, wherein the concave surface has a height that exceeds a height of the open mouth. ### Claim 13 (depends on 7) The snubber of claim 7, wherein the concave surface has an arc length that exceeds a height of the open mouth. ### Claim 14 (depends on 7) The snubber of claim 7, wherein the snubber has two opposing outer side surfaces, and the concave surface extends completely between the two opposing outer side surfaces. ### Claim 15 A snubber for an automotive transmission, comprising: a generally flat surface configured to limit radially-outward movement of a drive member connecting a transmission gearbox output to a differential input; a mouth fluidly coupled to an internal cavity for capturing transmission fluid; a wing extending from the generally flat surface toward the drive member, the wing having a hollow interior fluidly coupled to the internal cavity, the wing defining an outlet to dispense the transmission fluid radially inward from the drive member; and a concave outer surface located outside of and adjacent to the mouth. ### Claim 16 (depends on 15) The snubber of claim 15, wherein the concave outer surface is located further from the generally flat surface than the mouth. ### Claim 17 (depends on 15) The snubber of claim 15, wherein the concave outer surface has a height that exceeds a height of the mouth. ### Claim 18 (depends on 15) The snubber of claim 15, wherein the concave outer surface has an arc length that exceeds a height of the mouth. ### Claim 19 (depends on 15) The snubber of claim 15, further comprising a pair of opposing side surfaces, wherein the concave outer surface extends laterally and entirely between the side surfaces. ### Claim 20 (depends on 15) The snubber of claim 15, wherein the snubber includes an outer perimeter and the concave outer surface is disposed on the outer perimeter.