# US 12,215,774 B2 · Systems and methods for gearbox fluid reservoir > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,215,774 B2 - Document ID: US12215774B2 - Status: Granted - Kind: B2 - Application number: 18/059,334 - Filed: 2022-11-28 - Published: 2024-05-30 - Granted: 2025-02-04 - Earliest claimed: 2022-11-28 - Assignees: Dana Italia S.R.L. - Applicants: Dana Italia S.R.L. - Inventors: Matteo Stefani; Matteo Dallapiccola - Web page: https://patentgrep.com/patent/US12215774B2 ## CPC - F16H 57/0424: {Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes} - F16H 57/0416: {Air cooling or ventilation} - F16H 57/0417: {Heat exchangers adapted or integrated in the gearing} - F16H 57/0423: {Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes} - F16H 57/0436: {Pumps} - F16H 57/045: {Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case} - F16H 57/0453: {Section walls to divide a gear sump} - F16H 57/0457: {Splash lubrication} - F16H: GEARING ## Abstract Methods and systems are provided for a lubricating apparatus for a gearbox. In one example, an apparatus may include a curved shroud enclosing a portion of a gear, a first side oil collector and a second side oil collector, an oil reservoir having a first end fluidly coupled to the first side oil collector and a second end fluidly coupled to the second side oil collector, and a metering orifice fluidly coupling the oil reservoir to the curved shroud. The oil reservoir further includes at least two U-turns between the first end and the second end, and walls of the oil reservoir having multiple cavities. ## Claims ### Claim 1 An apparatus, comprising: a curved shroud enclosing a portion of a gear; a first side oil collector; a second side oil collector; an oil reservoir having a first end fluidly coupled to the first side oil collector and a second end fluidly coupled to the second side oil collector, the oil reservoir turning back on itself at least twice between the first end and the second end, and walls of the oil reservoir having multiple cavities; and a metering orifice fluidly coupling the oil reservoir to the curved shroud. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the curved shroud is a semi-circular baffle. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the first side oil collector is angled a first direction away from a front face of the gear and a rear face of the gear, the front face opposite the rear face, and the second side oil collector is angled a second direction, opposite the first direction. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein a first oil reservoir section extends along a first length between the first side oil collector and a first U-turn, a second oil reservoir section extends along the first length between the first U-turn and a second U-turn, and a third oil reservoir section extends along the first length between the second U-turn and the second side oil collector. ### Claim 5 (depends on 4) The apparatus of claim 4, wherein the second oil reservoir section includes a sloped section, where a height of the second oil reservoir section gradually decreases from a first height at the first U-turn and the second U-turn to a second height, less than the first height, at an approximate center of the first length. ### Claim 6 (depends on 5) The apparatus of claim 5, wherein the metering orifice is positioned at the approximate center of the first length in vertical alignment with a curved peak of the sloped section of the second oil reservoir section. ### Claim 7 (depends on 4) The apparatus of claim 4, wherein walls of the oil reservoir include a base first side wall, a base second side wall, a base front wall, and a base rear wall, where the base first side wall extends between the first oil reservoir section and the second oil reservoir section and the base second side wall extends between the second oil reservoir section and the third oil reservoir section. ### Claim 8 (depends on 4) The apparatus of claim 4, wherein the first oil reservoir section further includes an outlet in a housing of the apparatus adjacent to the first U-turn, where the outlet fluidly couples the oil reservoir to an exterior of the apparatus. ### Claim 9 (depends on 4) The apparatus of claim 4, wherein a first drain channel extends from and is fluidly coupled to the first side oil collector, parallel to the first oil reservoir section, and a second drain channel extends from and is fluidly coupled to the second side oil collector, parallel to the third oil reservoir section, the first drain channel and the second drain channel separated from each other by a housing of the apparatus. ### Claim 10 (depends on 1) The apparatus of claim 1, wherein the apparatus is formed of high thermal conductivity material. ### Claim 11 (depends on 1) The apparatus of claim 1, wherein the cavities have a gyroid infill pattern. ### Claim 12 (depends on 1) The apparatus of claim 1, wherein each of the first side oil collector, the second side oil collector, and the metering orifice have at least one of a circular, triangular, rectangular, teardrop, or square cross-section. ### Claim 13 An oil circuit, comprising: an oil pump; a gearbox housing; a delivery line fluidly coupling the oil pump to the gearbox housing; and an apparatus coupled to the gearbox housing, the apparatus formed of a curved shroud enclosing a portion of a gear, a first side oil collector, a second side oil collector, an oil reservoir having a first end fluidly coupled to the first side oil collector and a second end fluidly coupled to the second side oil collector, the oil reservoir further including at least two U-turns between the first end and the second end, and walls of the oil reservoir having multiple cavities, and a metering orifice fluidly coupling the oil reservoir to the curved shroud. ### Claim 14 (depends on 13) The oil circuit of claim 13, wherein a first end of the delivery line is coupled to an inlet of the gearbox housing and a second end of the delivery line, opposite the first end, is coupled to an outlet of the apparatus. ### Claim 15 (depends on 13) The oil circuit of claim 13, wherein the oil pump is configured to deliver a lubricating fluid having a first temperature to the curved shroud via an inlet of the gearbox housing to lubricate the gear, and the gear is configured to rotate in a first direction and/or a second direction, where rotation of the gear increases a temperature of the lubricating fluid in contact with the gear from the first temperature to a second temperature, the second temperature greater than the first temperature. ### Claim 16 (depends on 15) The oil circuit of claim 15, wherein: the oil reservoir is configured with a first oil reservoir section extending along a first length between the first side oil collector and a first U-turn, a second oil reservoir section extending along the first length between the first U-turn and a second U-turn, and a third oil reservoir section extending along the first length between the second U-turn and the second side oil collector; the second oil reservoir section is configured with a sloped section, where a height of the second oil reservoir section gradually decreases from a first height at the first U-turn and the second U-turn to a second height, less than the first height, at an approximate center of the first length; and the metering orifice is positioned at the approximate center of the first length in vertical alignment with a curved peak of the sloped section of the second oil reservoir section.