# US 2008/0185329 A1 · Strengthening construction for depressing cap of water filter

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- Number: US 2008/0185329 A1
- Document ID: US20080185329A1
- Status: Published application
- Kind: A1
- Application number: 11/672,175
- Filed: 2007-02-07
- Published: 2008-08-07
- Earliest claimed: 2007-02-07
- Assignees: Hantech Co., Ltd.
- Inventors: Hsieh Wen-Pin; Huang Chung-Yen; Lin Chih-Kai; Hu Chien-Hsin; Wang Mei-Hsin
- Web page: https://patentgrep.com/patent/US20080185329A1

## CPC

- B01D 35/31: including arrangements for environmental protection, e.g. pressure resisting features
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)

## Abstract

Disclosed is a strengthening construction for depressing cap of water filter, said depressing cap has a water inlet and a water exit, a pipe line which does not form a via hole for connecting said water inlet and water exit is formed between said water inlet and water exit, and a water falling hole is formed at said pipe line near said water inlet, in addition, a water outlet is formed at the central portion of said pipe line, on the inner wall of the depressing cap, a plurality of gripping elements for firmly holding filter core are separately formed and circularly arrayed, characterized in that: at the base portions of said gripping elements, at least a ring-shaped protecting wall in formed to connect the base portions of said gripping elements. Such that when the water filter is impacted by external force, the impact force on the gripping elements shall be dissipated.

## Claims

### Claim 1

A strengthening construction for a depressing cap of a water filter, said depressing cap having a water inlet, a water exit and a pipe line which does not include a via hole connecting the water inlet and the water exit and a water falling hole is formed at the pipe line near the water inlet, in addition, a water outlet is formed at a central portion of the pipe line; a ring-shaped protecting wall and a plurality of separately formed and circularly arranged gripping elements for firmly holding a filter core characterized in that: said gripping elements include base portions, and at the base portions of said gripping elements, the ring-shaped protecting wall connecting the base portions of the gripping elements and wherein a plurality of radially arrayed reinforcing ribs extend between the ring-shaped protecting wall and the water outlet for strengthening the construction.

### Claim 2

(canceled)

### Claim 3

(canceled)

### Claim 4 (depends on 1)

The strengthening construction for a depressing cap of a water filter as called for in claim 1, wherein said ring-shaped protecting wall is formed as a unit together with said gripping elements and becomes a part of the depressing cap.

### Claim 5 (depends on 1)

The strengthening construction for a depressing cap of a water filter as called for in claim 1, wherein the inner surface of the base portion of said gripping elements is formed with an arc shaped connecting line.