# US 12,759,039 B2 · Venting device, casting device with venting device, vacuum die-casting system and method for operating the vacuum die-vcasting system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,759,039 B2 - Document ID: US12759039B2 - Status: Granted - Kind: B2 - Application number: 18/800,453 - Filed: 2024-08-12 - Published: 2026-01-29 - Granted: 2026-10-13 - Earliest claimed: 2024-07-29 - Assignees: Interguss Giessereiprodukte GmbH - Applicants: InterGuss Giessereiprodukte GmbH - Inventors: Christian Enke - Web page: https://patentgrep.com/patent/US12759039B2 ## CPC - B22D 45/005: {Evacuation of fumes, dust or waste gases during manipulations in the foundry (during steel manufacture C21C5/38; evacuation from furnaces F27D17/30)} - B22D 18/06: Vacuum casting, i.e. making use of vacuum to fill the mould - B22D: CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES (shaping of plastics or substances in a plastic state B29C; metallurgical processing, selection of substances to be added to metal C21, C22) ## Abstract The invention relates to a venting device (01) for venting a casting chamber (11) by means of an evacuation device (12), wherein the venting device (01) has a base body (02) having an outflow channel (03) which is formed within the base body (02) and having an insertion portion (04) for being connected to the casting chamber (11) in a detachable and fluid-conducting manner and having a connection portion (05) for being connected to the evacuation device (12) in a detachable and fluid-conducting manner, wherein air can flow out through the outflow channel (03) when evacuating the casting chamber (11) and a filter unit (06) is disposed in the outflow channel (03). Furthermore, the invention relates to a casting device (10) comprising at least one casting chamber (11) having a casting chamber wall (13). Furthermore, the invention relates to a casting device (10) comprising at least one casting chamber (11) having a casting chamber wall (13), and to a vacuum-assisted pressure die casting system (100) having a casting device (10) and to a method for operating a vacuum-assisted pressure die casting system (100). ## Claims ### Claim 1 A venting device (01) for venting a casting chamber (11) by an evacuation device (12), wherein the venting device (01) has a base body (02) having an outflow channel (03) formed within the base body (02) and through which air flows out when evacuating the casting chamber (11), wherein the base body (02) has an insertion portion (04) for being directly connected to the casting chamber (11) in a detachable and fluid-conducting manner and a connection portion (05) for being connected to the evacuation device (12) in a detachable and fluid-conducting manner, and the base body (02) has a step (08), wherein the step (08) is formed between the connection portion (05) and the insertion portion (04) by the insertion portion (04) having a smaller outer diameter than the connection portion (05), and wherein the insertion portion (04) is directly connected to the connection portion (05), wherein a filter unit (06) is disposed in the outflow channel (03) of the base body (02). ### Claim 2 (depends on 1) The venting device according to claim 1, wherein the base body (02) is tubular. ### Claim 3 (depends on 1) The venting device according to claim 1, wherein the insertion portion (04) has an external thread (41) or the connection portion (05) has a clamping surface (51). ### Claim 4 (depends on 1) The venting device according to claim 1, wherein a transmission element (07) for transmitting a torque is disposed on the base body (02) in a torque-transmitting manner. ### Claim 5 (depends on 4) The venting device of claim 4, wherein the transmission element (07) at least partially forms the step (08) between the connection portion (05) and the insertion portion (04). ### Claim 6 (depends on 1) The venting device according to claim 1, wherein the filter unit (06) has a filter material which is permeable to air and made of steel. ### Claim 7 (depends on 1) The venting device according to claim 1, wherein the insertion portion (04) has a recess (42). ### Claim 8 (depends on 1) A casting device (10) comprising at least one casting chamber (11) having a casting chamber wall (13), wherein the casting chamber (11) has at least one filling hole (14) for introducing a melt into the casting chamber (11), at least one discharge hole (15) for discharging the melt from the casting chamber (11) and at least one vent hole (16), and further comprising a venting device (01) according to claim 1 inserted in the vent hole (16) and detachably connected to the casting chamber (11). ### Claim 9 (depends on 8) The casting device according to claim 8, wherein an internal thread (161) for screwing in the venting device (01) or a stop (162) which is brought into contact with the insertion portion (04) of the venting device (01) is formed in the vent hole (16). ### Claim 10 (depends on 9) The casting device according to claim 9, wherein a gap (17) between the stop (162) and the venting device (01) is impermeable to metal. ### Claim 11 (depends on 8) The casting device according to claim 8, wherein the vent hole (16) has a casting chamber recess (18) in the evacuation direction (A) of the detachable connection between the venting device (01) and the casting chamber (11). ### Claim 12 (depends on 8) A vacuum-assisted pressure die casting system (100) having a casting device (10) according to claim 8, wherein the melt is conveyable into the casting chamber (11) via the filling hole (14) and is suppliable to the vacuum-assisted pressure die casting system (100) via the discharge hole (15) of a cavity of a pressure die casting tool (101). ### Claim 13 (depends on 12) A method for operating a vacuum-assisted pressure die casting system (100) according to claim 12 comprising the following steps: Introducing a melt through the filling hole (14) into the casting chamber (11); and Evacuating a gas contained within the casting chamber (11) via the vent hole (16) and the outflow channel (03) of the venting device (01); and Conveying the melt via the discharge hole (15) of the casting chamber (11) into a pressure die casting tool (101). ### Claim 14 (depends on 13) The method according to claim 13, wherein the casting device (10) comprises an inspection for determining the degree of saturation of the filter unit (06) of the venting device (01). ### Claim 15 (depends on 13) The method according to claim 13, wherein the venting device (01) or the filter unit (06) is replaced depending on the degree of saturation of the filter unit (06).