US 12,467,482 B2
Valve device
Sascha Alexander Biwersi, Mettlach (DE); and Kai Sumpf, Schwalbach (DE)
Assigned to HYDAC MOBILHYDRAULIK GMBH, Sulzbach/Saar (DE)
Appl. No. 18/546,412
Filed by HYDAC Mobilhydraulik GmbH, Sulzbach / Saar (DE)
PCT Filed Jan. 31, 2022, PCT No. PCT/EP2022/052236
§ 371(c)(1), (2) Date Aug. 14, 2023,
PCT Pub. No. WO2022/171478, PCT Pub. Date Aug. 18, 2022.
Claims priority of application No. 10 2021 000 749.2 (DE), filed on Feb. 13, 2021.
Prior Publication US 2024/0125338 A1, Apr. 18, 2024
Int. Cl. F16K 11/07 (2006.01); F15B 13/04 (2006.01); F16K 31/04 (2006.01); F16K 31/53 (2006.01); F15B 13/044 (2006.01)
CPC F15B 13/0402 (2013.01) [F16K 11/07 (2013.01); F16K 31/04 (2013.01); F16K 31/53 (2013.01); F15B 13/0444 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A valve device, comprising at least one valve piston arranged in a valve housing in a longitudinally displaceable manner, which valve piston moves using a drive in conjunction with an assigned drive train, interconnects individual fluid ports present in the valve housing in a fluid-conveying manner or separates them from one another; wherein
a sensor monitors the respective positions of the drive train and thus the respective positions of the valve piston in the valve housing;
the drive is an electric motor;
the drive train comprises at least one motor shaft, which is drivable by the electric motor;
one end of the motor shaft opens into a gearbox, which using a gear shaft actuates a drive pinion, which meshes with a rack, which interacts with the valve piston; wherein
the sensor comprises a first sensor that monitors the motor shaft and a second sensor monitoring the gear shaft; and
a permanent magnet is mounted directly to the gear shaft, which magnet actuates the second sensor during rotation of the gear shaft.