US 12,264,744 B2Granted

Valve

AssigneeEagle Industry Co., Ltd.

InventorsDaichi Kurihara, Akihiro Hashiguchi, Kohei Fukudome, Keigo Shirafuji

Life of this patent

Estimating the term…

Loading patent…

Abstract

A valve includes: a housing having a primary pressure space and a secondary pressure space; a valve seat disposed between the primary pressure space and the secondary pressure space; a valve body that is driven in an axial direction by a driving source to be seated on or separate from the valve seat; and a communication passage that provides communication between a back space adjacent to one of the primary pressure space and the secondary pressure space and remaining one of the primary pressure space and the secondary pressure space. A partition member is disposed between the valve housing and the valve body, and the back space and the one of the primary pressure space and the secondary pressure space are partioned off from each other in a sealed state by the partition member.

Claims11

Dependent claims

A valve, comprising:

a valve housing having a first space and a second space;
a valve seat disposed between the first space and the second space;
a valve body that is driven in an axial direction by a driving source to be seated on or separate from the valve seat;
and
a communication passage that provides communication between the second space and a back space adjacent to the first space,
wherein the first space is formed between the back space and the second space in an axial direction,
a partition that is expandable and contractible in the axial direction is disposed between the valve housing and the valve body, and the back space and the first space are partitioned off from each other in a sealed state by the partition,
wherein the partition includes a ring portion fixed to the valve housing, and a body portion having an accordion shape of which one end is fixed to the ring portion in a sealed state, and
wherein an inner peripheral surface of the ring portion serves as a tilt restriction portion of the valve body.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/027,599Filed 24 Sep 2021
Priority: JP 2020-16268328 Sep 2020
Published: US 2023/0400104 A114 Dec 2023
Granted: 1 Apr 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

F16K 1/42
Cutting-off parts, e.g. valve members, seats: valve seats
F16K 41/10
Spindle sealings: with diaphragm, e.g. shaped as bellows or tube
F04B 27/18
Of pumps with stationary cylinders: by varying the relative positions of a swash plate and a cylinder block
F04B 27/1804
By varying the relative positions of a swash plate and a cylinder block: controlled by crankcase pressure