公开(公告)号：US09726202B2

公开(公告)日：2017-08-08

申请号：US14517389

申请日：2014-10-17

Applicant: Showa Corporation

Inventor： Hayato Tsutsui ,  Takeshi Ueki ,  Shinya Horie ,  Kazuhiko Sadakata

IPC: F15B11/02 ,  F15B11/028 ,  F04B19/00 ,  F04B49/22 ,  F04B53/10 ,  F15B15/18

CPC classification number: F15B11/028 ,  F04B19/00 ,  F04B49/22 ,  F04B53/10 ,  F04B53/1095 ,  F15B15/18 ,  F15B2211/205 ,  F15B2211/20561 ,  F15B2211/27 ,  F15B2211/30 ,  F15B2211/3051 ,  F15B2211/50518 ,  F15B2211/511 ,  F15B2211/56 ,  F15B2211/7053

Abstract: Provided is a pump device and a hydraulic actuator that can reduce the number of steps of performance measurement. The pump device includes: a switching valve for switching a flow of oil to a first chamber or a second chamber of a cylinder device, the inside of which is segmented into the first chamber and the second chamber by a piston; an up blow valve (first chamber-side relief valve) that relieves pressure of a first chamber-side flow path connected to the first chamber; and a down blow valve (second chamber-side relief valve) that relieves pressure of a second chamber-side flow path connected to the second chamber.

公开(公告)号：US10273982B2

公开(公告)日：2019-04-30

申请号：US14517271

申请日：2014-10-17

Applicant: Showa Corporation

Inventor： Hayato Tsutsui ,  Nobuaki Tanaka ,  Takeshi Ueki

IPC: F04B39/08 ,  F15B11/028 ,  F15B13/01 ,  F15B15/18 ,  F04C2/08 ,  F04C2/18 ,  F04C15/06

Abstract: A first case accommodating a first check valve of a switching valve switching a flow of hydraulic fluid to one of a first chamber and a second chamber of a cylinder device, an inside of which is segmented into the first chamber and the second chamber by a piston, and a second case which is stacked on the first case and in which a first actuation valve of the switching valve is accommodated to be displaced in a direction of stacking the first case are provided. A first valve chamber, accommodating the first actuation valve, of the second case has a pressure receiving surface on which pressure of hydraulic fluid that acts on the first valve chamber acts toward the first case.

公开(公告)号：US09162742B2

公开(公告)日：2015-10-20

申请号：US14059630

申请日：2013-10-22

Applicant: SHOWA CORPORATION

Inventor： Hayato Tsutsui ,  Shinya Horie ,  Nobuaki Tanaka ,  Takeshi Ueki

IPC: B63H20/10

CPC classification number: B63H20/10

Abstract: A trim and tilt apparatus for a marine vessel propulsion machine includes: a cylinder having a cylinder chamber; a piston rod that is telescopically inserted into the cylinder chamber; and a hydraulic oil supply and discharge device that supplies and discharges hydraulic oil to and from the cylinder chamber, the trim and tilt apparatus allowing the marine vessel propulsion machine to perform a trim operation and a tilt operation, and the hydraulic oil supply and discharge device includes: a plurality of discharge units for simultaneously discharging the hydraulic oil; and a switching unit for switching between a case where the cylinder chamber is supplied with the hydraulic oil discharged by a part of the plurality of discharge units, and a case where the cylinder chamber is not supplied with the hydraulic oil discharged by the part of the plurality of discharge units.

Abstract translation: 一种用于船用船舶推进机的装饰和倾斜装置包括：具有气缸室的气缸; 可伸缩地插入气缸室中的活塞杆; 以及向液压缸室供给和排出液压油的液压油供给和排出装置，允许船用船舶推进机进行修整操作和倾斜操作的装配倾斜装置，以及液压油供给和排出装置 包括：用于同时排出液压油的多个排放单元; 以及切换单元，用于切换在气缸室被供给由多个排出单元的一部分排出的液压油的情况下，以及气缸室未被供给由所述多个排出单元的一部分排出的液压油的情况 多个放电单元。