# US 2017/0051731 A1 · Oscillating armature pump with a flux-conducting element > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0051731 A1 - Document ID: US20170051731A1 - Status: Published application - Kind: A1 - Application number: 15/306,499 - Filed: 2015-04-23 - Published: 2017-02-23 - Earliest claimed: 2014-04-25 - Assignees: Sysko Corporation - Applicants: Sysko AG - Inventors: Hubert OTT; Norbert HELBLING - Web page: https://patentgrep.com/patent/US20170051731A1 ## CPC - F04B 17/04: using solenoids - F04B 9/06: the means including spring- or weight-loaded lost-motion devices - F04B 17/046: {the fluid flowing through the moving part of the motor} - F04B 53/146: {Piston-rod guiding arrangements} - F04B 53/16: Casings; Cylinders; Cylinder liners or heads; Fluid connections - F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F) ## Abstract An oscillating armature pump, in particular high-pressure oscillating armature pump, for a household appliance, with a piston guidance for guiding a piston element, with a pump spring provided for supplying an actuation force onto the piston element, and with a housing unit comprising at least one flux-conducting element which is provided to conduct a magnetic flux generated by a magnetic actuator. It is proposed that the flux-conducting element is in a mounted state arranged in a radial direction between the pump spring and the piston guidance. ## Claims ### Claim 1 An oscillating armature pump, in particular high-pressure oscillating armature pump, for a household appliance, with a piston guidance for guiding a piston element, with a pump spring provided for supplying an actuation force onto the piston element, and with a housing unit comprising at least one flux-conducting element which is provided to conduct a magnetic flux generated by a magnetic actuator, wherein the flux-conducting element is in a mounted state arranged in a radial direction between the pump spring and the piston guidance, wherein the flux-conducting element is embodied as a bent piece of sheet metal rolled up forming a sleeve, and comprises at least one slot in an axial direction. ### Claim 2 (depends on 1) The oscillating armature pump as claimed in claim 1, wherein the piston guidance and the flux-conducting element are connected in a friction-fit manner. ### Claim 3 (depends on 1) The oscillating armature pump as claimed in claim 1, wherein the piston guidance comprises an inner wall, and the flux-conducting element comprises an outer wall which are situated adjacently to each other. ### Claim 4 (depends on 1) The oscillating armature pump as claimed in claim 1, wherein the flux-conducting element comprises a base body and a plurality of feet which form at least partly a spring seat of the pump spring. ### Claim 5 (depends on 4) The oscillating armature pump as claimed in claim 4, wherein the feet are oriented inwards in a radial direction with respect to the base body. ### Claim 6 (canceled) ### Claim 7 (depends on 4) The oscillating armature pump at least as claimed in claim 4, wherein the base body of the flux-conducting element has an outer diameter, and a wall thickness amounting to maximally 10% of the outer diameter. ### Claim 8 (canceled) ### Claim 9 (depends on 1) The oscillating armature pump as claimed in claim 1, wherein the housing unit comprises a further flux-conducting element, which is arranged radially inside the pump spring. ### Claim 10 (depends on 9) The oscillating armature pump as claimed in claim 9, wherein the flux-conducting elements at least partially enclose the pump spring between them in a radial direction. ### Claim 11 (depends on 9) The oscillating armature pump at least as claimed in claim 9, wherein the housing unit comprises a housing element, which is connected to the further flux-conducting element in a friction-fit manner. ### Claim 12 (depends on 9) The oscillating armature pump at least as claimed in claim 9, wherein the further flux-conducting element comprises a base body and a plurality of feet, which form at least partly a spring seat of the pump spring. ### Claim 13 (depends on 12) The oscillating armature pump as claimed in claim 12, wherein the feet are oriented outwardly in a radial direction with respect to the base body. ### Claim 14 (depends on 1) The oscillating armature pump as claimed in claim 1, wherein the flux-conducting element comprises at least one fixating element, which is provided for holding the flux-conducting element in the piston guidance. ### Claim 15 (depends on 14) The oscillating armature pump as claimed in claim 14, wherein the at least one fixating element is embodied integrally with the flux-conducting element. ### Claim 16 (depends on 14) The oscillating armature pump at least as claimed in claim 14, wherein the at least one fixating element is embodied as a clamping element ### Claim 17 (depends on 1) The oscillating armature pump as claimed in claim 1, comprising a ring-shaped groove provided for receiving the flux-conducting element. ### Claim 18 An oscillating armature pump, in particular high-pressure oscillating armature pump, for a household appliance, with a piston guidance for guiding a piston element, with a pump spring provided for supplying an actuation force onto the piston element, and with a housing unit comprising at least one flux-conducting element which is provided to conduct a magnetic flux generated by a magnetic actuator, wherein the flux-conducting element is in a mounted state arranged in a radial direction between the pump spring and the piston guidance, wherein the housing unit comprises a further flux-conducting element, which is arranged radially inside the pump spring. ### Claim 19 (depends on 18) The oscillating armature pump as claimed in claim 18, wherein the flux-conducting elements at least partially enclose the pump spring between them in a radial direction. ### Claim 20 (depends on 18) The oscillating armature pump at least as claimed in claim 18, wherein the housing unit comprises a housing element, which is connected to the further flux-conducting element in a friction-fit manner. ### Claim 21 (depends on 18) The oscillating armature pump at least as claimed in claim 18, wherein the further flux-conducting element comprises a base body and a plurality of feet, which form at least partly a spring seat of the pump spring. ### Claim 22 (depends on 21) The oscillating armature pump as claimed in claim 21, wherein the feet are oriented outwardly in a radial direction with respect to the base body.