Mesh filter

Patent metadata

Field	Value
Publication number	US-10112129-B2
Application number	US-201515119869-A
Country	US
Kind code	B2
Filing date	Feb 10, 2015
Priority date	Mar 6, 2014
Publication date	Oct 30, 2018
Grant date	Oct 30, 2018

Abstract

A filter unit connecting a gate connection part to an outer cylinder includes a plurality of longitudinal ribs formed at regular intervals orthogonally to an X axis and parallel to a Y axis when a virtual plane orthogonal to a central axis of the gate connection part is assumed to be an X-Y plane. A plurality of transverse ribs is formed at regular intervals orthogonally to the longitudinal ribs and parallel to the X axis, and a plurality of rectangular openings is formed between the longitudinal ribs and the transverse ribs. By injecting molten resin into a cavity from a gate opened toward a cavity portion forming the gate connection part, the gate connection part, the outer cylinder, and the filter unit are formed integrally, the rib widths of the longitudinal ribs and the transverse ribs are made constant, and the shapes of the plurality of openings are made identical.

First claim

The invention claimed is:

1. A mesh filter for filtering out foreign matter in fluid, said mesh filter comprising:
a discoid gate connection part;
a cylindrical outer cylinder surrounding the discoid gate connection part; and
a filter unit connecting an outer peripheral surface of the discoid gate connection part to an inner peripheral surface of the outer cylinder along a radial direction of the discoid gate connection part;
wherein the filter unit is formed along a virtual X-Y plane orthogonal to a central axis of the gate connection part,
wherein the filter unit except a connection portion connecting to the discoid gate connection part and a connection portion connecting to the outer cylinder includes a plurality of longitudinal ribs formed at regular intervals parallel to each other along the virtual X-Y plane, a plurality of transverse ribs formed at regular intervals parallel to each other along the X-Y plane, the plurality of transverse ribs crossing the plurality of longitudinal ribs, and a plurality of openings formed between the plurality of longitudinal ribs and the plurality of transverse ribs,
wherein the discoid gate connection part, the outer cylinder, and the filter unit are formed integrally to have a one-piece construction, rib widths of the longitudinal ribs and rib widths of the transverse ribs are constant, and shapes of the openings are identical, and
a length of the discoid gate connection part along a central axis of the discoid gate connection part is smaller than a length of the outer cylinder along a central axis of the outer cylinder, and the length of the discoid gate connection part is greater than a length of the filter unit along a central axis of the filter unit.

2. The mesh filter according to claim 1 , wherein the rib widths of the longitudinal ribs are equal to the rib widths of the transverse ribs.

Assignees

• Enplas Corp

Inventors

• Suzuki Akihiro

Classifications

• B29L2031/7374

  Slotted · CPC title

• B01D29/012 Primary

  Making filtering elements (making bag, cage, hose, tube, sleeve or like filtering elements B01D29/111) · CPC title

• B29L2031/14

  Filters {(optical filters B29L2011/0066, sieves or screens B29L2031/737)} · CPC title

• B29C45/263

  with mould wall parts provided with fine grooves or impressions, e.g. for record discs · CPC title

• B01D29/05

  supported · CPC title