Strengthening construction for depressing cap of water filter

Details Strengthening construction for depressing cap of water filter Strengthening construction for depressing cap of water filter

2007-02-07

2008-10-14

Lithgow, Thomas M (Department: 1797)

Liquid purification or separation

With repair or assembling means

C210S444000

Reexamination Certificate

active

07435346

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.

REFERENCES:
patent: 4617117 (1986-10-01), Messinger et al.
patent: 4721563 (1988-01-01), Rosaen
patent: 4812230 (1989-03-01), Gerulis
patent: 5484529 (1996-01-01), Malugade et al.
patent: 5498333 (1996-03-01), Canther
patent: 4023515 (1992-01-01), None

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