# US 8,740,178 B2 · Solenoid valve for controlling a fluid > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,740,178 B2 - Document ID: US8740178B2 - Status: Granted - Kind: B2 - Application number: 13/040,562 - Filed: 2011-03-04 - Published: 2011-09-08 - Granted: 2014-06-03 - Earliest claimed: 2010-03-05 - Assignees: Robert Bosch GmbH - Applicants: Andreas Karl; Massimiliano Ambrosi; Nicolas Houis; Jens Norberg; Stephan Steingass; Elmar Vier; Andreas Lechler; Gerhard Stokmaier - Inventors: Andreas Karl; Massimiliano Ambrosi; Nicolas Houis; Jens Norberg; Stephan Steingass; Elmar Vier; Andreas Lechler; Gerhard Stokmaier - Web page: https://patentgrep.com/patent/US8740178B2 ## CPC - F16K 31/0693: {Pressure equilibration of the armature} - B60T 8/363: {in hydraulic systems (B60T8/3655, B60T8/3675 and B60T8/369 take precedence)} - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} - B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES ## Abstract A solenoid valve for controlling a fluid includes an armature having a base region, a lateral region and a head region. The solenoid valve includes a valve member connected to the armature. The solenoid valve further includes an armature casing component in which the armature is positioned. A flow path is formed between the armature and the armature casing component, the flow path extending from a lower armature space to an upper armature space and back to the lower armature space. A junction region is arranged between the head region and the lateral region. The junction region has at least one groove formed therein to facilitate an overflow between the lateral region and the head region. ## Claims ### Claim 1 A solenoid valve for controlling a fluid, comprising: an armature including a base region, a substantially cylindrical lateral region, a head region, and a junction region defined between the lateral region and the head region; a valve member connected to the armature; an armature casing component in which the armature is positioned; and only one groove arrangement including a first groove in the junction region configured to facilitate fluid flow between the lateral region and the head region, the only one groove arrangement defined only in the junction region, an outer portion of the head region, and an upper portion of the lateral region, wherein a flow path is formed between the armature and the armature casing component, the flow path extending from a lower armature space to an upper armature space and back to the lower armature space, and wherein the first groove is arranged at an angle of approximately 20° to 30° with respect to the lateral region. ### Claim 2 (depends on 1) The solenoid valve according to claim 1, wherein the armature casing component is in the shape of a pot. ### Claim 3 (depends on 1) The solenoid valve according to claim 1, wherein the junction region has a non-cylindrical shape. ### Claim 4 (depends on 1) The solenoid valve according to claim 1, wherein: the only one groove arrangement further comprises a second groove (i) defined only in the junction region, the outer portion of the head region, and the upper portion of the lateral region and (ii) configured to facilitate fluid flow between the lateral region and the head region, and wherein the second groove is located opposite the first groove on the circumference of the armature. ### Claim 5 (depends on 4) The solenoid valve according to claim 4, wherein the second groove is arranged at an angle of approximately 20° to 30° with respect to the lateral region. ### Claim 6 (depends on 5) The solenoid valve according to claim 5, wherein the armature is of symmetrical design. ### Claim 7 (depends on 5) The solenoid valve according to claim 5, wherein each of the first groove and the second groove is a linear V-shaped groove. ### Claim 8 A solenoid valve for controlling a fluid, comprising: an armature including a base region, a substantially cylindrical lateral region, a head region, and a junction region defined between the lateral region and the head region; a valve member connected to the armature; an armature casing component in which the armature is positioned; and a first groove defined in the junction region and configured to facilitate fluid flow between the lateral region and the head region, wherein a flow path is formed between the armature and the armature casing component, the flow path extending from a lower armature space to an upper armature space and back to the lower armature space, wherein the lateral region includes a substantially cylindrical exterior surface having a first planar flattened portion (i) defined in an outer circumference of the substantially cylindrical exterior surface, (ii) extending in a first plane parallel to a longitudinal axis of the armature, and (iii) extending from the base region to the junction region such that the first groove opens into the first planar flattened portion. ### Claim 9 (depends on 1) The solenoid valve according to claim 1, wherein the armature possesses a bell shape defined by the head region, a first junction region, a first lateral region, a second junction region extending outwardly from the first lateral region, a second lateral region, which has a greater diameter than the first lateral region, and the base region. ### Claim 10 (depends on 8) The solenoid valve according to claim 8, further comprising: a second groove defined in the junction region and configured to facilitate fluid flow between the lateral region and the head region, wherein the substantially cylindrical exterior surface of the lateral region includes a second planar flattened portion (i) defined in the outer circumference of the substantially cylindrical exterior surface, (ii) extending in a second plane parallel to the longitudinal axis of the armature, and (iii) extending from the base region to the junction region such that the second groove opens into the second planar flattened portion. ### Claim 11 (depends on 10) The solenoid valve according to claim 10, wherein the first plane and the second plane are parallel to one another.