公开(公告)号：US20180104628A1

公开(公告)日：2018-04-19

申请号：US15842977

申请日：2017-12-15

Applicant: YAMASHIN-FILTER CORP.

Inventor： Meiho TAKU ,  Makoto ISHIZUKA ,  Tatsuhiro OSHITA

IPC: B01D36/00 ,  B01D39/12 ,  B01D39/20 ,  B01D35/00 ,  B01D29/33 ,  B01D29/58

Abstract: A tank for storing oil includes a suction strainer with first and second filtration portions. The first filtration portion has a substantially cylindrical shape and formed by bending a thin plate into a pleated shape. The second filtration portion is provided on the outer side of the first filtration portion. The second filtration portion has a substantially cylindrical shape and is formed of a material having a plurality of spaces formed in a surface and interior of the material.

公开(公告)号：US20210364379A1

公开(公告)日：2021-11-25

申请号：US17396233

申请日：2021-08-06

Applicant: YAMASHIN-FILTER CORP.

Inventor： Nobuki SASAKI ,  Megumi NOMOTO ,  Tatsuhiro OSHITA

IPC: G01L19/14 ,  G01L13/02 ,  F16J15/02

Abstract: A leakage of liquid inside a differential pressure detection device is reliably preventable. A diaphragm portion that detects a differential pressure as a pressure difference between a high pressure side and a low pressure side includes an annular member, a strain gauge provided in a hollow portion of the annular member, and a first plate and a second plate provided such that the annular member and the strain gauge are sandwiched. The first plate and the second plate each abut on a first annular packing. A first groove and a second groove (the first annular packing) overlap with the annular member when viewed from a first direction along an axis of the first hole.

公开(公告)号：US20240238709A1

公开(公告)日：2024-07-18

申请号：US18620438

申请日：2024-03-28

Applicant: YAMASHIN-FILTER CORP.

Inventor： Shoji HIROTA ,  Koki AIDA ,  Tatsuhiro OSHITA ,  Shinichi TAOGUCHI

IPC: B01D39/16 ,  B01D46/52 ,  B01D46/54 ,  B01D46/62

CPC classification number: B01D39/1623 ,  B01D46/521 ,  B01D46/546 ,  B01D46/62 ,  B01D2239/025 ,  B01D2239/0618 ,  B01D2239/0654 ,  B01D2239/1233 ,  B01D2239/1258 ,  B01D2239/1291

Abstract: Damage is not caused even when oil mist in a gas is trapped, and clogging of a filter paper due to an oil film can be less likely to occur. A filtration member formed by folding a filter paper for trapping oil mist in a gas into a corrugated shape in which mountain folds and valley folds are alternately repeated is provided. The filter paper includes a nanofiber layer formed of polyolefin fibers. In the nanofiber layer, a content of fibers having a fiber diameter of 0.2 μm to 0.4 μm is 3% or more, a content of fibers having a fiber diameter of 0.4 μm to 0.6 μm is 24% or more, a content of fibers having a fiber diameter of 0.6 μm to 0.8 μm is 15% or more, and a content of fibers having a fiber diameter of 0.8 μm to 1.0 μm is 9% or more.

公开(公告)号：US20180229162A1

公开(公告)日：2018-08-16

申请号：US15953539

申请日：2018-04-16

Applicant: YAMASHIN-FILTER CORP.

Inventor： Tatsuhiro OSHITA ,  Meiho TAKU ,  Makoto ISHIZUKA

IPC: B01D35/147 ,  B01D29/07 ,  B01D29/11 ,  B01D29/58

Abstract: When a lid covers an opening portion formed at an upper end of a filter case with a bottomed substantially cylindrical shape inside which a filter element is disposed, the internal space between the lid and the filter case is formed. A bypass flow path connecting the internal space and outside space is formed in the lid, and a relief valve disposed moveably between a position closing the bypass flow path and a position opening the bypass flow path includes an air bleeder formed from a porous material.

公开(公告)号：US20180229157A1

公开(公告)日：2018-08-16

申请号：US15953534

申请日：2018-04-16

Applicant: YAMASHIN-FILTER CORP.

Inventor： Tatsuhiro OSHITA ,  Meiho TAKU ,  Makoto ISHIZUKA

IPC: B01D29/07 ,  B01D29/92 ,  F15B1/26 ,  F15B21/04

CPC classification number: B01D29/07 ,  B01D24/38 ,  B01D29/01 ,  B01D29/13 ,  B01D29/88 ,  B01D29/92 ,  B01D35/02 ,  B01D2201/0453 ,  B01D2201/12 ,  F15B1/26 ,  F15B21/041

Abstract: A first discharge tube having a substantially cylindrical shape with openings at both ends is inserted through an outflow hole of a filter case and provided protruding toward the bottom surface of the tank. A second discharge tube having a substantially cylindrical shape is provided so as to cover the first discharge tube. The second discharge tube includes a first end that comes into contact with a bottom surface of the filter case, and is provided protruding from the bottom surface of the filter case toward the bottom surface of the tank. A tip end of the second discharge tube is covered by a bottom surface cover, and a plurality of discharge holes are formed in a region near an upper end of a side surface.

公开(公告)号：US20180104629A1

公开(公告)日：2018-04-19

申请号：US15843072

申请日：2017-12-15

Applicant: YAMASHIN-FILTER CORP.

Inventor： Meiho TAKU ,  Makoto ISHIZUKA ,  Tatsuhiro OSHITA

IPC: B01D36/00 ,  B01D29/33 ,  B01D35/00

CPC classification number: B01D36/001 ,  B01D19/0057 ,  B01D29/21 ,  B01D29/33 ,  B01D29/925 ,  B01D35/005 ,  B01D35/027 ,  B01D35/147 ,  B04C3/06 ,  B04C2003/006 ,  B04C2009/002 ,  F01M1/10 ,  F01M2001/1035 ,  F15B1/26 ,  F15B21/04 ,  F15B21/044 ,  F16N29/00 ,  F16N39/002

Abstract: A return filter is provided in a tank, for removing bubbles from hydraulic oil before returning the hydraulic oil to the tank. A vortex forming portion that includes a spiral-shaped blade member is provided in an outflow portion that has a substantially cylindrical shape and communicates with a hollow portion of a filter element. Thus, a vortex forms in the hydraulic oil flowing through the outflow portion and bubbles contained in the hydraulic oil are collected.