# US 2018/0023682 A1 · Sealing array for a transmission, in particular for the output shaft of a transmission, and transmission having the sealing array > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0023682 A1 - Document ID: US20180023682A1 - Status: Published application - Kind: A1 - Application number: 15/546,233 - Filed: 2015-12-01 - Published: 2018-01-25 - Earliest claimed: 2015-01-26 - Assignees: Sew-Eurodrive GmbH & Co. KG - Applicants: Sew-Eurodrive GmbH & Co. KG - Inventors: Martin REINEBERG; Peter BARTON - Web page: https://patentgrep.com/patent/US20180023682A1 ## CPC - F16H 57/029: characterised by means for sealing the gearboxes, e.g. to improve airtightness - F16J 15/002: {comprising at least two sealings in succession (F16J15/162, F16J15/40 take precedence)} - F16J 15/16: between relatively-moving surfaces (F16J15/50, F16J15/52 take precedence; bellows pistons F16J3/06; piston-rings or ring sealings of similar construction F16J9/00) - F16J 15/32: with elastic sealings, e.g. O-rings - F16J 15/3204: with at least one lip - F16J 15/162: {Special parts or details relating to lubrication or cooling of the sealing itself (F16J15/324, F16J15/3404, F16J15/40 take precedence)} - F16J 15/164: {the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid} - F16H: GEARING - F16J: PISTONS {(specially adapted for dampers F16F9/32)}; CYLINDERS; SEALINGS ## Abstract In a sealing array for a transmission, in particular for the output shaft of a transmission, and a transmission having a sealing array, a spacer ring is situated between a first and a second shaft-sealing ring, a flange part is connected to the coupling flange, in particular by screws, and a coupling flange presses the second shaft-sealing ring against the spacer ring, the spacer ring presses on the first shaft-sealing ring so that the first shaft-sealing ring is positioned against a flange part. The flange part, the coupling flange, the first shaft-sealing ring, the spacer ring, and the second shaft-sealing ring are arranged as a pre-assembled unit, and thus, in particular, as a transportable, integrated unit. ## Claims ### Claim at position 1 1 to 12. (canceled) ### Claim 13 A sealing array for a transmission, comprising: a first shaft-sealing ring; a second shaft sealing ring; a spacer ring arranged between the first shaft-sealing ring and the second shaft-sealing ring; a flange part; a coupling flange screw-connected to the flange part and pressing the second shaft-sealing ring against the spacer ring to press the spacer ring against the first shaft-sealing ring and the first shaft-sealing ring against the flange part. ### Claim 14 (depends on 13) The sealing array according to claim 13, wherein the flange part, the coupling flange, the first shaft-sealing ring, the spacer ring, and the second shaft-sealing ring are arranged as a pre-assembled unit. ### Claim 15 (depends on 14) The sealing array according to claim 14, wherein the pre-assembled unit is arranged as a transportable and integrated unit. ### Claim 16 (depends on 13) The sealing array according to claim 13, wherein the sealing array is arranged as a sealing array for an output shaft of the transmission. ### Claim 17 (depends on 13) The sealing array according to claim 13, wherein the flange part and the coupling flange delimit an annular groove having a first side wall in contact with the first shaft-sealing ring and an opposite side wall in contact with the second shaft-sealing ring. ### Claim 18 (depends on 13) The sealing array according to claim 13, wherein a contact surface of the first shaft-sealing ring and a contact surface of the second shaft-sealing ring are arranged on a cylinder liner screw-connected to a shaft. ### Claim 19 (depends on 18) The sealing array according to claim 18, wherein a space region, delimited by the flange part, the coupling flange, the second shaft-sealing ring, the cylinder liner, and/or the shaft, is acted upon by pressurized air. ### Claim 20 (depends on 19) The sealing array according to claim 19, wherein the coupling flange is adapted to supply the pressurized air therethrough. ### Claim 21 (depends on 13) The sealing array according to claim 13, further comprising a seal and/or an O-ring arranged between the flange part and the coupling flange adapted to seal a connection of the flange part to the coupling flange. ### Claim 22 (depends on 18) The sealing array according to claim 18, wherein the spacer ring has a smaller radial extension than the first shaft-sealing ring and/or the second shaft-sealing ring, the spacer ring being set apart from the cylinder liner and the shaft, to provide a grease chamber between the first shaft-sealing ring and the second shaft-sealing ring. ### Claim 23 (depends on 13) The sealing array according to claim 13, wherein the flange part is connected to a cover part of the transmission and/or a housing of the transmission. ### Claim 24 (depends on 23) The sealing array according to claim 23, wherein screw heads of screws of the screw-connection are overlapped and/or covered by the coupling flange. ### Claim 25 (depends on 18) The sealing array according to claim 18, wherein the cylinder liner is connected to the shaft by axially directed screws. ### Claim 26 (depends on 25) The sealing array according to claim 25, wherein the axially directed screws are screwed into respective threaded bores provided on an end face of the shaft located at an axial end of the shaft. ### Claim 27 (depends on 18) The sealing array according to claim 18, wherein the shaft is arranged as a hollow shaft and the coupling flange includes an annular groove, having a ring axis aligned coaxially to a shaft axis of the shaft, an axial end area of the shaft and/or the cylinder liner at least partially projecting into the annular groove. ### Claim 28 (depends on 18) The sealing array according to claim 18, wherein a cascading sealing array is arranged between the shaft and a cover part, adapted to seal the shaft from a housing of the transmission and to seal an interior of the transmission, that is partially or completely filled with oil, from an external environment. ### Claim 29 (depends on 28) The sealing array according to claim 28, wherein the cascading sealing array includes a shaft-sealing ring sealing array, a lamellar seal, and a labyrinth seal. ### Claim 30 (depends on 13) The sealing array according to claim 13, wherein the shaft-sealing ring sealing array is accommodated in the housing of the transmission. ### Claim 31 (depends on 13) The sealing array according to claim 13, wherein the coupling flange is screwed to the flange part such that the first shaft-sealing ring and the second shaft-sealing ring are arranged between the coupling flange and the flange part and the spacer ring is situated between the first shaft-sealing ring and the second shaft-sealing ring. ### Claim 32 (depends on 31) The sealing array according to claim 31, wherein the coupling flange, the flange part, the spacer ring, the first shaft-sealing ring, and the second shaft-sealing ring form a pre-assembled unit. ### Claim 33 (depends on 13) A transmission, comprising: an output shaft; a sealing array according to claim 13 adapted to seal the output shaft.