Filter assembly with locking cover

Patent metadata

Field	Value
Publication number	US-10414671-B2
Application number	US-201514684071-A
Country	US
Kind code	B2
Filing date	Apr 10, 2015
Priority date	Apr 10, 2014
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

Modular pure water systems are provided that have a tank and a cover assembly, wherein the tank and cover assembly are configured to removably receive therebetween one or more expansion tubes in a fluid tight manner to allow for selective volume expansion of the pure water system. Also provided are purification media bags for pure water systems that have a shape, construction, and/or material that mitigates the flow of water between the outer wall of the bag and an inner wall of the pure water systems.

First claim

What is claimed is:

1. A filter assembly comprising:
a tank having a cylindrical sidewall, the cylindrical sidewall defining an outer surface and an inner surface, a base for closing a bottom end of the cylindrical sidewall, wherein an upper end of the cylindrical wall is open, and a plurality of pins extending radially outwardly from the outer surface of the cylindrical wall proximate the upper end;
a cover for closing the open top of the cylindrical wall, the cover having a top wall and a rim extending downwardly from an outer periphery of the top wall, wherein the rim defines an inner surface including a plurality of bayonet slots that respectively receive the plurality of pins on the outer surface of the cylindrical wall to lock the cover to the upper end of the cylindrical wall;
purification media disposed in a porous filter bag, the filter bag being positioned in and sealingly engaging the inner surface of cylindrical wall of the tank; and
a pivot lever located above the top wall of the cover, the pivot lever having a first end and a second end, the second end of the pivot lever having a locking arm that extends downwardly through a vertical opening in the top cover and into a horizontal portion of one of the bayonet slots, the pivot lever having a horizontal pivot pin located between the first and second ends, wherein the pivot pin is rotatably connected to the top wall of the cover via a mounting member to permit the pivot lever to pivot about a horizontal pivot axis, wherein the locking arm can be moved vertically upward out of the bayonet slot when the first end of the pivot lever is moved to a lower position thereby permitting the cover to be rotated and removed from the top end of the cylindrical wall, and wherein the locking arm can be moved vertically downward into the bayonet slot when the first end of the pivot lever moves to an upper position to retain the pin in the horizontal portion of the bayonet slot thereby locking the cover to the top end of the cylindrical wall.

2. The filter assembly of claim 1 , wherein the purification media comprises deionizing resin.

3. The filter assembly of claim 1 , wherein the filter bag is elastomeric to maintain the purification media in a compressed state within the filter bag.

4. The filter assembly of claim 1 , wherein the filter bag is elastomeric to maintain the purification media in a compressed state within the filter bag after the purification media has been at least partially depleted.

5. The filter assembly of claim 1 , wherein the purification media treats or conditions water passing there through by removing one or more components and/or adding one or more components.

6. The filter assembly of claim 1 , further comprising a pressure release plunger extending through a pressure release hole in the top wall of the cover, the pressure release plunger having a lower end portion for closing the pressure release hole and an upper end that engages a lower side of the first end of the pivot lever, wherein the pressure within the tank can be released when the first end of the pivot lever is moved from the upper position to the lower position thereby moving the lower end portion of the plunger downwardly and allowing pressure to be released from inside the tank through the pressure release hole to the ambient environment.

7. The filter assembly of claim 1 , further comprising an expansion tube having a first end including an additional plurality of radial pins and a second end including an additional plurality of bayonet slots so that the first end is configured to form the fluid tight connection with one of the cover assembly and the tank and the second end is configured to form the fluid tight connection with the other of the cover assembly and the tank.

8. The filter assembly of claim 1 , further comprising a first diffuser plate in the tank, the first diffuser plate having an inner area with a plurality of fluid passage openings.

9. The filter assembly of claim 8 , further comprising mesh covering the plurality of fluid passage openings.

10. The filter assembly of claim 8 , wherein the first diffuser plate further comprises an outer area that is at least sealingly engaged with the inner surface of the tank.

11. The filter assembly of claim 8 , wherein the first diffuser plate is secured in the tank or is movable within the tank.

Assignees

• Unger Marketing Int Llc

Inventors

• Hirsch Kai
• Adams Paul
• Sgroi Jr Anthony
• Roberts Jr Bryan Lee
• Camp Robert
• Blum Michael

Classifications

• C02F1/42 Primary

  by ion-exchange (ion-exchange in general B01J) · CPC title

• B08B3/14

  Removing waste, e.g. labels, from cleaning liquid · CPC title

• B01D2201/4076

  Anti-rotational means · CPC title

• C02F2201/008

  Mobile apparatus and plants, e.g. mounted on a vehicle · CPC title

• C02F2201/007

  Modular design · CPC title