# US 11,305,735 B2 · Wiper arm device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,305,735 B2 - Document ID: US11305735B2 - Status: Granted - Kind: B2 - Application number: 16/956,828 - Filed: 2018-10-11 - Published: 2020-12-24 - Granted: 2022-04-19 - Earliest claimed: 2017-12-21 - Assignees: Robert Bosch GmbH - Applicants: Robert Bosch GmbH - Inventors: Godelieve Kraemer - Web page: https://patentgrep.com/patent/US11305735B2 ## CPC - B60S 1/3415: {with means for supplying cleaning fluid to windscreen cleaners, e.g. washers (arrangement of nozzles B60S1/52)} - B60S 1/522: {moving liquid spreading means, e.g. arranged in wiper arms} - B60S 1/524: {arranged in wiper blades} - B60S 1/3862: {Transport of liquid there through} - B60S 2001/4054: {the intermediate element engaging the back part of the arm} - B60S 2001/4058: {comprising a separate locking element, e.g. in addition to an intermediate element} - B60S: SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR ## Abstract The invention relates to a wiper arm device, in particular a windscreen wiper arm device, comprising: at least one hose-holding unit (12) which can be mounted on at least one wiper arm (10) and which comprises at least one hose guide (14) provided for guiding at least one washing water hose (16); at least one auxiliary nozzle unit (18); and at least one coupling unit (20) which is provided to couple the auxiliary nozzle unit (18) to the hose-holding unit (12) and comprises at least one first coupling element (22) and at least one corresponding second coupling element (24) for coupling. According to the invention, the first coupling element (22) is formed at least in part by the hose guide (14). ## Claims ### Claim 1 A wiper arm device having at least one hose retention unit (12) which is configured to be arranged on at least one wiper arm (10) and which comprises at least one hose guide (14) configured to guide at least one washing water hose (16), the wiper arm device having at least one additional nozzle unit (18) and at least one coupling unit (20) which is configured to couple the additional nozzle unit (18) to the hose retention unit (12), wherein the coupling unit (20) comprises at least a first coupling element (22) and at least a corresponding second coupling element (24) for coupling, and wherein the first coupling element (22) is formed at least partially by the hose guide (14), wherein the wiper arm device further includes at least one rotation prevention unit (30) which has at least one rotation prevention element (32) configured to prevent a rotation of the additional nozzle unit (18) relative to the hose retention unit (12), wherein in a coupled state, the first coupling element (22) is arranged in a rotationally secure manner in the rotation prevention element (32). ### Claim 2 (depends on 1) The wiper arm device as claimed in claim 1, characterized in that the additional nozzle unit (18) has at least one hose connector (26) which at least partially forms the second coupling element (24). ### Claim 3 (depends on 1) The wiper arm device as claimed in claim 1, characterized in that in a coupled state at least the first coupling element (22) and at least the second coupling element (24) at least partially engage around each other. ### Claim 4 (depends on 1) The wiper arm device as claimed in claim 1, characterized in that for coupling, the first coupling element (22) and the second coupling element (24) are configured to be displaced with respect to each other in a main extent direction of the hose retention unit (12). ### Claim 5 (depends on 1) The wiper arm device as claimed in claim 1, characterized in that for coupling, the first coupling element (22) and the second coupling element (24) are configured to be pressed one inside the other transversely relative to a main extent direction of the hose retention unit (12). ### Claim 6 (depends on 1) The wiper arm device as claimed in claim 1, characterized in that the rotation prevention element (32) is supported on the wiper arm (10) in a coupled state of the coupling unit (20). ### Claim 7 (depends on 1) The wiper arm device as claimed in claim 1, characterized in that the rotation prevention unit (30) is connected at least partially in an integral manner to the coupling unit (20). ### Claim 8 (depends on 1) The wiper arm device as claimed in claim 1, characterized in that the hose retention unit (12) has at least one securing element (34) which is configured to secure the hose retention unit (12) to the wiper arm (10), and which is integrally connected to the hose guide (14). ### Claim 9 (depends on 1) A windshield wiper, having at least one wiper arm device as claimed in claim 1. ### Claim 10 (depends on 1) A method for assembling a wiper arm device as claimed in claim 1, characterized in that in at least one method step (102) with the at least one coupling unit (20) the additional nozzle unit (18) is coupled to the hose retention unit (12) by means of the at least a first coupling element (22) and the at least a corresponding second coupling element (24), wherein the first coupling element (22) is at least partially formed by the hose guide (14) of the hose retention unit (12).