US 11,913,559 B2
Spool valve
Naoki Nishimura, Tokyo (JP); Tadanobu Kawato, Tokyo (JP); and Masaki Hoshi, Tokyo (JP)
Assigned to EAGLE INDUSTRY CO., LTD., (JP)
Appl. No. 17/762,020
Filed by Eagle Industry Co., Ltd., Tokyo (JP)
PCT Filed Sep. 17, 2020, PCT No. PCT/JP2020/035283
§ 371(c)(1), (2) Date Mar. 18, 2022,
PCT Pub. No. WO2021/060146, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 2019-172708 (JP), filed on Sep. 24, 2019.
Prior Publication US 2022/0333709 A1, Oct. 20, 2022
Int. Cl. F16K 11/07 (2006.01); F16K 27/04 (2006.01)
CPC F16K 27/041 (2013.01) [F16K 11/07 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A spool valve comprising a sleeve and a spool arranged on an inside of the sleeve to be movable in a longitudinal direction, the sleeve being provided with an inflow port into which fluid is supplied from an external fluid supply hole, and an outflow port through which the fluid is flown to an outside of the sleeve, wherein
a supply groove is formed on an outer periphery of the sleeve, and
the supply groove includes an inlet space into which the fluid flows from the fluid supply hole and an outlet space formed on a side of the inflow port with respect to the inlet space in an axial direction, and
the spool valve further comprises a partition wall adjacent to the inlet space and formed to protrude in a radially outward direction of the sleeve, the partition wall having a communication portion formed to communicate the inlet space and the outlet space.