# US 2019/0316680 A1 · Plug-in coupling seal for a fluid line of a drive motor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0316680 A1 - Document ID: US20190316680A1 - Status: Published application - Kind: A1 - Application number: 16/343,429 - Filed: 2017-10-18 - Published: 2019-10-17 - Earliest claimed: 2016-10-20 - Assignees: Henn GmbH & Co KG. - Applicants: Henn GmbH & Co KG. - Inventors: Wolfgang BALDREICH - Web page: https://patentgrep.com/patent/US20190316680A1 ## CPC - F16L 37/088: by means of a split elastic ring - F02M 35/10144: {Connections of intake ducts to each other or to another device} - F16J 15/3232: having two or more lips - F16L 21/03: placed in the socket before connection ({F16L21/022,} F16L21/025 take precedence) - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - F16J: PISTONS {(specially adapted for dampers F16F9/32)}; CYLINDERS; SEALINGS ## Abstract The invention relates to a plug-in coupling seal (1) for a fluid line of a drive motor, wherein the plug-in coupling seal (1) has an outer surface (5) for accommodation in a first coupling part (11) and an inner surface (7) for contact against a second coupling part (12) to be pushed in insertion direction (16) into the first coupling part (11). A microstructuring (22) having protruding structuring elements (23) for reduction of the resistance of the second coupling parts (12) to insertion into the first coupling part (11) is formed on the inner surface (7). ## Claims ### Claim at position 1 1: A plug-in coupling seal (1) for a fluid line of a drive motor, wherein the plug-in coupling seal (1) is formed for accommodation between a first coupling part (11) and a second coupling part (12) to be pushed in insertion direction (16) into the first coupling part (11) and wherein the plug-in coupling seal (1) has a contact face (32), which is formed for contact against the first coupling part (11) and/or against the second coupling part (12), wherein a microstructuring (22) having protruding structuring elements (23) for reduction of the resistance of the two coupling parts (11, 12) to joining is formed at least in regions on the contact face (32). ### Claim at position 2 (depends on 1) 2: The plug-in coupling seal according to claim 1, wherein an outer surface (5) is formed for accommodation in a first coupling part (11) and an inner surface (7) is formed for contact against a second coupling part (12) to be pushed in insertion direction (16) into the first coupling part (11), wherein the microstructuring (22) having the protruding structuring elements (23) for reduction of the resistance of the two coupling parts (11, 12) to joining is formed on the inner surface (7). ### Claim at position 3 (depends on 1) 3: The plug-in coupling seal according to claim 1, wherein the protruding structuring elements (23) of the microstructuring (22) are designed in the form of several at least partly and especially completely circumferential ribs. ### Claim at position 4 (depends on 1) 4: The plug-in coupling seal according to claim 1, wherein the protruding structuring elements (23) have a height (25) of between 10 μm and 900 μm, especially between 40 μm and 400 μm, preferably between 80 μm and 200 μm. ### Claim at position 5 (depends on 1) 5: The plug-in coupling seal according to claim 1, wherein a free space (27) of between 10 μm and 900 μm, especially between 40 μm and 400 μm, preferably between 100 μm and 200 μm is formed between the protruding structuring elements (23). ### Claim at position 6 (depends on 1) 6: The plug-in coupling seal according to claim 1, wherein the protruding structuring elements (23) have a width (28) of between 5 μm and 300 μm, especially between 10 μm and 200 μm, preferably between 30 μm and 100 μm. ### Claim at position 7 (depends on 1) 7: The plug-in coupling seal according to claim 1, wherein the protruding structuring elements (23) are formed in a manner bent in insertion direction (16). ### Claim at position 8 (depends on 1) 8: The plug-in coupling seal according to claim 1, wherein a lubricant (29) is disposed between the protruding structuring elements (23). ### Claim at position 9 (depends on 1) 9: The plug-in coupling seal according to claim 1, wherein several protruding structuring elements (23) are disposed one after the other in wavy manner. ### Claim at position 10 (depends on 2) 10: The plug-in coupling seal according to claim 2, wherein the inner surface (7) of the plug-in coupling seal (1) on which the protruding structuring elements (23) are disposed extends between a first longitudinal end (17) of the plug-in coupling seal (1) having a first diameter (18) and a second longitudinal end (19) of the plug-in coupling seal (1) having a second diameter (20), wherein the second diameter (20) is smaller than the first diameter (18) and a transition radius (21), which extends between the first longitudinal end (17) of the plug-in coupling seal (1) and the second longitudinal end (19) of the plug-in coupling seal (1), is formed on the inner surface (7). ### Claim at position 11 (depends on 1) 11: The plug-in coupling seal according to claim 1, wherein a coating (31), by which the sliding behavior of the microstructuring (22) may be further improved, is formed at least on the contact face (32). ### Claim at position 12 (depends on 1) 12: The plug-in coupling seal according to claim 1, wherein cavities, in which a lubricant (29) is disposed, are formed in the plug-in coupling seal (1). ### Claim at position 13 (depends on 1) 13: A motor vehicle comprising: a drive motor, an air-intake line of the drive motor and a plug-in coupling (10) of the air-intake line of the drive motor, wherein the plug-in coupling (10) has a first coupling part (11) having a plug-in coupling seal (1) received therein and a second coupling part (12) inserted into the first coupling part (11), wherein the plug-in coupling seal (1) is formed according to claim 1.