Title:
FILTER DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/145363
Kind Code:
A1
Abstract:
According to the present invention, even when positioning is not possible during filter element insertion, circumferential positioning of the filter element can be performed. An upper plate of the filter element includes a first rotation stopper on an upper surface facing a head, the head has a second rotation stopper on a lower surface facing the upper plate, one of the first rotation stopper and the second rotation stopper is a convex portion, and the other is a concave portion and a projection. The projection is provided along a wall surface of a part of the concave portion so as to protrude in a direction opposite to the depth direction of the concave portion. When rotating a case or the head to screw a first threaded portion with a second threaded portion, the filter element rotates when the convex portion and the projection are not in contact with each other, and the filter element does not rotate when the convex portion and the projection are in contact with each other. In a state where the case and the head are assembled, the convex portion is inserted into the concave portion.
Inventors:
OKAMOTO NAOHIRO (JP)
KITAJIMA NOBUYUKI (JP)
KITAJIMA NOBUYUKI (JP)
Application Number:
PCT/JP2022/047970
Publication Date:
August 03, 2023
Filing Date:
December 26, 2022
Export Citation:
Assignee:
YAMASHIN FILTER CORP (JP)
International Classes:
B01D35/14; B01D29/11
Foreign References:
| JP2011506842A | 2011-03-03 | |||
| JP2020517450A | 2020-06-18 | |||
| JP2005349336A | 2005-12-22 | |||
| JP2000279711A | 2000-10-10 | |||
| JP2008540914A | 2008-11-20 | |||
| JP2019115879A | 2019-07-18 |
Attorney, Agent or Firm:
SAKATA Yukari (JP)
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