# US 2017/0284534 A1 · Slotted oil baffle for gears > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0284534 A1 - Document ID: US20170284534A1 - Status: Published application - Kind: A1 - Application number: 15/091,149 - Filed: 2016-04-05 - Published: 2017-10-05 - Earliest claimed: 2016-04-05 - Assignees: United Technologies Corporation - Applicants: United Technologies Corporation - Inventors: Christopher T. Anglin - Web page: https://patentgrep.com/patent/US20170284534A1 ## CPC - F16H 57/0423: {Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes} - F02C 7/32: Arrangement, mounting, or driving, of auxiliaries - F02C 7/36: Power transmission arrangements between the different shafts of the gas turbine plant, or between the gas-turbine plant and the power user ({F02C3/107 - F02C3/13 and} F02C7/32 take precedence; couplings for transmitting rotation F16D; gearing in general F16H) - F16H 1/14: comprising conical gears only - F16H 57/0495: {with fixed gear ratio} - F16H 57/12: Arrangements for adjusting or for taking-up backlash not provided for elsewhere - F05D 2260/4031: as in toothed gearing - F05D 2260/98: Lubrication - F16H: GEARING - F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS ## Abstract A baffle for use with one or both bevel gears in a transmission system is disclosed that can include a rim having a frustoconical shape, multiple pockets on an inner side of the rim configured to collect lubricant, and multiple slots extending through the rim with each slot of the multiple slots being adjacent to a corresponding pocket of the multiple pockets and configured to allow lubricant to flow through the rim. A transmission system is also disclosed that can include a first gear, a second gear, and a baffle surrounding gear teeth of the first or second gear. The baffle has a plurality of pockets adjacent to the gear teeth and a plurality of slots adjacent to the plurality of pockets with the plurality of slots extending through the baffle. ## Claims ### Claim 1 An assembly comprising: a first gear with a first set of gear teeth; a second gear with a second set of gear teeth that mesh with the first set of gear teeth; and a baffle surrounding a subset of the second set of gear teeth, the baffle having a plurality of pockets adjacent to the subset of the second set of gear teeth and a plurality of slots adjacent to the plurality of pockets with the plurality of slots extending through the baffle. ### Claim 2 (depends on 1) The assembly of claim 1, wherein the baffle is stationary and each of the plurality of pockets is rotationally forward of a corresponding slot of the plurality of slots in relation to a rotation of the second gear. ### Claim 3 (depends on 2) The assembly of claim 2, wherein each pocket of the plurality of pockets gradually gets deeper in a rotationally downstream direction to be deepest at a point adjacent to each corresponding slot of the plurality of slots. ### Claim 4 (depends on 1) The assembly of claim 1, wherein the baffle has a frustoconical portion adjacent to an inner side of the second gear and a cover connected to the frustoconical portion with the cover having the plurality of pockets and the plurality of slots adjacent to the subset of the second set of gear teeth. ### Claim 5 (depends on 4) The assembly of claim 4, further comprising: an arm connected to the frustoconical portion of the baffle and configured to keep the baffle stationary relative to the second gear. ### Claim 6 (depends on 1) The assembly of claim 1, wherein the baffle has a rim with a hollow frustoconical shape that surrounds a subset of the second gear teeth and is configured to accommodate a shaft extending through the baffle. ### Claim 7 (depends on 6) The assembly of claim 6, further comprising: at least one flange connected to the rim. ### Claim 8 (depends on 1) The assembly of claim 1, wherein the baffle includes a window adjacent to the first gear, the window configured to prevent the baffle from coming into contact with the first gear. ### Claim 9 (depends on 1) The assembly of claim 1, further comprising: a second baffle surrounding a subset of the first set of gear teeth on the first gear, the second baffle having a second plurality of pockets adjacent to the subset of the first set of gear teeth and a second plurality of slot adjacent to the second plurality of pockets with the second plurality of slots extending through the second baffle. ### Claim 10 (depends on 1) The assembly of claim 1, further comprising: a shaft attached at a first end to the second gear and at a second end to a gearbox. ### Claim 11 (depends on 1) The assembly of claim 1, further comprising: a shaft attached to the second gear, the shaft being a high speed shaft in a gas turbine engine. ### Claim 12 (depends on 1) The assembly of claim 1, further comprising: a nozzle configured to apply lubricant to the second set of gear teeth. ### Claim 13 (depends on 1) The assembly of claim 1, wherein the plurality of pockets includes at least three pockets and the plurality of slots includes at least three slots. ### Claim 14 A baffle comprising: a rim having a frustoconical shape; multiple pockets on an inner side of the rim configured to collect lubricant; and multiple slots extending through the rim, each slot of the multiple slots being adjacent to a corresponding pocket of the multiple pockets and configured to allow lubricant to flow through the rim. ### Claim 15 (depends on 14) The baffle of claim 14, further comprising: a disk connected to and within the rim, the disk having an attachment area configured to allow the baffle to attach to a support structure. ### Claim 16 (depends on 14) The baffle of claim 14, further comprising: a flange connected to and extending outward from the rim, the flange having an attachment area configured to allow the baffle to attach to a support structure. ### Claim 17 (depends on 14) The baffle of claim 14, wherein each pocket of the multiple pockets gets deeper as the pocket gets closer to the corresponding adjacent slot of the multiple slots. ### Claim 18 (depends on 14) The baffle of claim 14, further comprising: a ring connected to and within the rim, the ring having an aperture at a center that is configured to allow a shaft to extend through the ring and the baffle. ### Claim 19 (depends on 14) The baffle of claim 14, wherein the multiple pockets includes at least four pockets and the multiple slots includes at least four slots. ### Claim 20 (depends on 14) The baffle of claim 14, wherein each pocket of the multiple pockets has a greater length than a length of each slot of the multiple slots.