# US 2016/0355367 A1 · Suction Nozzle for a Suction Device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0355367 A1 - Document ID: US20160355367A1 - Status: Published application - Kind: A1 - Application number: 15/121,625 - Filed: 2014-12-17 - Published: 2016-12-08 - Earliest claimed: 2014-02-27 - Assignees: Windmoller & Holscher - Applicants: WindmöLler & HöLscher KG - Inventors: Fabian Sundermann; Frank Hoffman - Web page: https://patentgrep.com/patent/US20160355367A1 ## CPC - B65H 35/02: from or with longitudinal slitters or perforators - B65H 2301/41487: trimming edge - B65H 2406/30: Suction means - B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES ## Abstract The present invention relates to a Suction nozzle (110) for a suction device (100) for conveyance of cut waste strips (210) of a film web (200) comprising a nozzle duct (10) with a nozzle inlet (12) for suctioning the waste strips (210) and with a nozzle outlet (14) for introducing the waste strips (210) into the suction duct (130), wherein the nozzle duct (10) comprises an inlet portion (12a) adjacent to the nozzle inlet (12) and an outlet portion (14a) adjacent to the nozzle outlet (14) and between the outlet portion (14a) and the inlet portion (12a) an at least one rotation portion (16a) is assembled, whose flow cross section (20) is at least partially twisted over the run of the rotation portion (16a). ## Claims ### Claim 1 Suction nozzle for a suction device for conveyance of cut waste strips of a film web comprising a nozzle duct with a nozzle inlet for suctioning the waste strips and with a nozzle outlet for introducing the waste strips into the suction duct, wherein the nozzle duct comprises an inlet portion adjacent to the nozzle inlet and an outlet portion adjacent to the nozzle outlet and between the outlet portion and the inlet portion an at least one rotation portion is assembled, whose flow cross section is at least partially twisted over the run of the rotation portion. ### Claim 2 (depends on 1) Suction nozzle according to claim 1, wherein the suction duct comprises a constant or a mainly constant flow cross section between the nozzle inlet and the nozzle outlet. ### Claim 3 (depends on 1) Suction nozzle according to claim 1, wherein the rotation portion is at least partially configured flexible for a variation of shape of the turning of the flow cross section via the course of the rotation portion. ### Claim 4 (depends on 1) Suction nozzle according to claim 1, wherein the rotation portion comprises a twisting of a flow cross section with an angle area of approx. 45° to approx. 135°. ### Claim 5 (depends on 1) Suction nozzle according to claim 1, wherein at least the inlet portion or the outlet portion comprise a bended run of the flow cross section, wherein this bended run of at least the inlet portion or the outlet portion comprise a bending axis, which is adjusted to the axis of rotation of the turning of the flow cross section in the course of the rotation portion. ### Claim 6 (depends on 1) Suction nozzle according to claim 1, wherein the inlet portion comprises a mounting interface for the assembly of a suction device. ### Claim 7 (depends on 1) Suction nozzle according to claim 1, wherein at least the outlet portion and/or the nozzle outlet comprises a bearing device for a movable bearing of the suction nozzle at a suction duct of the suction device. ### Claim 8 (depends on 1) Suction nozzle according to claim 1, wherein the width of the flow cross section at the nozzle inlet is greater or equal to the maximum width of the waste strip of the film web. ### Claim 9 (depends on 1) Suction nozzle according to claim 1, wherein the rotation portion comprises wall surfaces, which comprise area portions for the configuration of a turning of the flow cross section via the course of the rotation portion. ### Claim 10 Suction device for suction and conveyance of the cut waste strips of a film web, comprising a suction duct, at least a suction nozzle for a suction device for conveyance of cut waste strips of a film web comprising a nozzle duct with a nozzle inlet for suctioning the waste strips and with a nozzle outlet for introducing the waste strips into the suction duct, wherein the nozzle duct comprises an inlet portion adjacent to the nozzle inlet and an outlet portion adjacent to the nozzle outlet and between the outlet portion and the inlet portion an at least one rotation portion is assembled, whose flow cross section is at least partially twisted over the run of the rotation portion, which with its nozzle outlet is fluid communicating connected to the suction duct, and at least a blower for the generation of an air stream within the suction duct and the at least one suction nozzle. ### Claim 11 (depends on 2) Suction nozzle according to claim 2, wherein the suction duct comprises a constant or a mainly constant flow cross section with one of the following geometric forms: Rectangular Oval Ellipsis Triangle. ### Claim 12 (depends on 4) Suction nozzle according to claim 4, wherein the rotation portion comprises a twisting of a flow cross section in the area between approx. 80° and approx. 100°. ### Claim 13 (depends on 4) Suction nozzle according to claim 4, wherein the rotation portion comprises a twisting of a flow cross section in the area between approx. 88° and approx. 92°. ### Claim 14 (depends on 5) Suction nozzle according to claim 5, wherein the bending axis is adjusted perpendicularly or mainly perpendicularly to the axis of rotation of the turning of the flow cross section in the course of the rotation portion. ### Claim 15 (depends on 9) Suction nozzle according to claim 9, wherein the rotation portion comprises wall surfaces, which comprise rectangular area portions.