公开(公告)号：US20220016550A1

公开(公告)日：2022-01-20

申请号：US17490755

申请日：2021-09-30

Applicant: YAMASHIN-FILTER CORP.

Inventor： Nobuyuki KITAJIMA

IPC: B01D27/08 ,  B01D35/147 ,  B01D35/30

Abstract: An upper plate provided on upper ends of a filtration member and an inner tube includes a tubular portion along the inner tube, a rib formed so as to protrude inward in a radial direction from an inner circumference of the tubular portion, and a hole formed in the rib. A gripping member has a protrusion portion that protrudes downward from a body portion having a thick plate shape inserted into a hollow portion of the tubular portion. When the gripping member is mounted on the upper plate, the protrusion portion is inserted into the hole.

公开(公告)号：US20250018319A1

公开(公告)日：2025-01-16

申请号：US18899604

申请日：2024-09-27

Applicant: YAMASHIN-FILTER CORP.

Inventor： Hideo NAKAOKA ,  Nobuyuki KITAJIMA

IPC: B01D35/027 ,  B01D29/21 ,  B01D29/58 ,  B01D36/00

Abstract: A filter section includes a filter having a cylindrical shape formed from a pleated plate; an attachment section having a cylindrical shape provided on a side surface of the tank, the attachment section with one end of the filtration section; a plate covering an end of the filtration section on a side not provided with the attachment section; and a baffle plate provided adjacent to the filtration section. The filtration section is provided along a horizontal direction, and the filtration section and the plate are provided inside the tank. The baffle plate includes at least one of a first baffle plate provided inside the pleated filter and a second baffle plate provided outside the pleated filter. The first baffle plate is disposed at least above a central axis of the filtration section, and the second baffle plate is disposed at least below the central axis.

公开(公告)号：US20210246991A1

公开(公告)日：2021-08-12

申请号：US17245911

申请日：2021-04-30

Applicant: YAMASHIN-FILTER CORP.

Inventor： Nobuyuki KITAJIMA ,  Nobuki SASAKI ,  Megumi NOMOTO

IPC: F16K17/04 ,  F16K37/00 ,  B01D35/143 ,  B01D35/147

Abstract: A differential pressure measurement range is widened and differential pressure can be measured particularly during low differential pressure. A first spool facing a space in a high pressure side is lighter than a second spool facing a space in a low pressure side in a state where a magnet is provided. Urging force of a first elastic member that urges the first spool toward the space in the high pressure side is smaller than urging force of a second elastic member that urges the second spool toward the space in the high pressure side, and the first elastic member and the second elastic member are disposed in series.

公开(公告)号：US20200298148A1

公开(公告)日：2020-09-24

申请号：US16897931

申请日：2020-06-10

Applicant: YAMASHIN-FILTER CORP.

Inventor： Nobuyuki KITAJIMA

IPC: B01D29/23 ,  B01D35/147 ,  G06K19/07

Abstract: An IC tag is attached to a filter element and a contact of the IC tag with liquid is avoidable. An IC tag is provided inside an upper plate provided so as to cover an upper end surface of a filter medium in a filter element. A lid body is provided on the case into which the filter element is inserted, and an antenna is provided on the lid body.

公开(公告)号：US20200215464A1

公开(公告)日：2020-07-09

申请号：US16826025

申请日：2020-03-20

Applicant: YAMASHIN-FILTER CORP.

Inventor： Nobuyuki KITAJIMA ,  Mitsuhiro YAMAGUCHI

IPC: B01D29/15 ,  B01D29/60 ,  B01D35/30 ,  B01D35/147 ,  B01D35/00

Abstract: A filter device that facilitates maintenance is provided. A case that internally includes a filter element includes a lid body. The lid body includes a flange portion having a substantially cylindrical shape fixed to the case and a cover having a substantially plate shape detachably provided to the flange portion. The flange portion has a first hole, and the cover has a second hole. The first hole and the second hole communicate between a space inside the case and a space outside the case.

公开(公告)号：US20240335774A1

公开(公告)日：2024-10-10

申请号：US18745527

申请日：2024-06-17

Applicant: YAMASHIN-FILTER CORP.

Inventor： Youichi NODOMI ,  Nobuyuki KITAJIMA ,  Hideo NAKAOKA

IPC: B01D35/027 ,  B01D29/11 ,  B01D29/21 ,  B01D36/00

CPC classification number: B01D35/0273 ,  B01D29/114 ,  B01D29/21 ,  B01D36/001

Abstract: A suction strainer provided in a tank in which oil is stored includes a filtration section having a tubular shape formed by bending a thin plate into a pleated shape, a first end member and a second end member covering respective both ends of the filtration section, and a float provided on the first end member. The filtration section is provided along a horizontal direction. A tubular portion has an air vent hole having one end opening to a first hole and the other end opening to the inside of the tank. The float is provided to be movable between a position where the air vent hole is closed and a position where the air vent hole is opened.

公开(公告)号：US20220106933A1

公开(公告)日：2022-04-07

申请号：US17551258

申请日：2021-12-15

Applicant: YAMASHIN-FILTER CORP.

Inventor： Nobuyuki KITAJIMA ,  Mitsunobu OKAMOTO

IPC: F02M37/42 ,  B01D35/027 ,  B01D29/11

Abstract: A tank has two substantially parallel side surfaces, a tank first side surface and a tank second side surface, and the return filter is provided in the tank via an insertion hole formed in the tank first side surface. The strainer has one end provided on an outflow portion provided on a bottom surface of a filter case and the other end provided on the tank second side surface.

公开(公告)号：US20190105584A1

公开(公告)日：2019-04-11

申请号：US16210030

申请日：2018-12-05

Applicant: YAMASHIN-FILTER CORP.

Inventor： Nobuki SASAKI ,  Nobuyuki KITAJIMA ,  Yoshinori TSURUSAKI

IPC: B01D19/00 ,  B01D29/00 ,  B01D29/01 ,  F16K24/04

Abstract: An air vent hole includes a substantially columnar hole main body portion, a first hole portion formed on the upper side of the hole main body portion, and a second hole portion formed on the lower side of the hole main body portion. Each of the first hole portion and the second hole portion partly has, in a cross section of the hole portion substantially orthogonal to a first direction that is a longitudinal direction of the hole main body portion, a cross-sectional area smaller than a cross-sectional area of a cross section of the hole main body portion substantially orthogonal to the first direction. A float inserted into the air vent hole is movable between a position where the float occludes the first hole portion and a position where the float occludes the second hole portion. The float occludes the first hole portion under the weight of the float. However, the float is pushed up by air. Furthermore, the float is formed of a material having a smaller specific gravity than a liquid to be filtered. Thus, the float is pushed up by the liquid to occlude the first hole portion.

公开(公告)号：US20190091614A1

公开(公告)日：2019-03-28

申请号：US16198922

申请日：2018-11-23

Applicant: YAMASHIN-FILTER CORP.

Inventor： Nobuyuki KITAJIMA ,  Nobuki SASAKI

IPC: B01D36/00 ,  B01D19/00 ,  B01D29/23 ,  B01D35/027

Abstract: When a liquid flows into a case along a tangential direction at an arbitrary point on a side surface of a filter case from an inflow pipe provided substantially around an outer periphery, at the side surface of the filter case, a swirling flow is produced in the liquid flowed and air contained in a fluid is collected in a center portion of the swirling flow to generate bubbles. The inflow pipe and a filter element are positioned not to overlap each other in a height direction, whereby the liquid flows into a hollow portion of a filter element from a case while swirling. The bubbles generated in the center portion of the swirling flow are released to a space above a liquid surface of the fluid retained in a tank through an air outlet portion formed in an upper end surface or the side surface of the filter case.

公开(公告)号：US20180113011A1

公开(公告)日：2018-04-26

申请号：US15782956

申请日：2017-10-13

Applicant: YAMASHIN-FILTER CORP.

Inventor： Jiro INOUE ,  Nobuki SASAKI ,  Hiroshi INABA ,  Nobuyuki KITAJIMA

IPC: G01F1/50 ,  G01F1/36 ,  G01F1/46 ,  B01D37/04

CPC classification number: G01F1/50 ,  B01D29/606 ,  B01D37/046 ,  C02F1/00 ,  G01F1/366 ,  G01F1/46 ,  G01L1/00

Abstract: A spool, including a substantially cylindrical flange portion and a substantially cylindrical front end portion which is thinner than the flange portion and whose center axis is substantially coincident with the center axis of the flange portion, is provided in a manner capable of slidingly moving in a cavity formed in a casing. The flange portion is inserted in a first cavity which has a center axis substantially coincident with the center axis of the casing and which has an inner diameter that is substantially the same as the diameter of the flange portion in length. The front end portion is inserted in a second cavity which is formed with its center axis being substantially coincident with the center axis of the casing, and which has an inner diameter greater than the diameter of the front end portion and less than the inner diameter of the first cavity in length. The rotation limiting portion, which has a rod-like shape thinner than the front end portion and which is provided along the front end portion in a manner contacting the side surface of the front end portion, is inserted in a groove portion formed on the side face of the second cavity. When the flange portion slidingly moves along the first cavity, the rotation limiting portion slidingly moves along the groove portion.