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 Title: |
US5545315:
Water filtering and purifying apparatus
[ Derwent Title ]
>> View Certificate of Correction for this publication
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| Country: |
US United States of America
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| Inventor: |
Lonneman, Alan; Plymouth, MN
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| Assignee: |
WTC Industries, Inc., Plymouth, MN
other patents from WTC INDUSTRIES, INC. (697730) (approx. 4)
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| Published / Filed: |
1996-08-13
/ 1994-08-05
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| Application Number: |
US1994000286774
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| IPC Code: |
Advanced:
C02F 1/00;
C02F 1/28;
C02F 1/76;
IPC-7:
C02F 9/00;
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| ECLA Code: |
C02F1/00D4; C02F1/28D; M02F1/76G; M02F307/02;
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| U.S. Class: |
Current:
210/120;
210/136;
210/266;
210/275;
210/282;
0D7/510;
Original:
210/120;
210/136;
210/266;
210/275;
210/282;
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| Field of Search: |
210/120,136,266,282,274,275
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| Priority Number: |
| 1994-08-05 |
US1994000286774 |
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| Abstract: |
A water filtering and purifying apparatus made according to the present invention comprises a water filtering and purifying apparatus for filtering and purifying water as it is ejected from a container at low gauge pressures generated by manually squeezing the container. The water filtering apparatus includes a cover for attaching to the container wherein the cover has a pressure responsive venting system for allowing air into the container while substantially preventing air and water contained in the container from escaping. A water filtration and purifying system is contained within the container and the filtration and purifying system comprises a replaceable pleated filter connected to a purifying cartridge.
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| Attorney, Agent or Firm: |
Kinney & Lange ;
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| Primary / Asst. Examiners: |
Cintins, Ivars;
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| Maintenance Status: |
CC Certificate of Correction issued
View Certificate of Correction
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| INPADOC Legal Status: |
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| Family: |
None
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First Claim:
Show all 17 claims |
What is claimed is:
1. A water filtering apparatus comprising:
- a walled container having an interior and an exterior surface and a pressure responsive venting means for allowing air into the container while substantially preventing fluids contained in the container from escaping therefrom;
- supply means for allowing the container to be filled with water;
- a water filtration system contained within the container having a pleated filter portion and a filtration cartridge connected thereto; and
- an outlet tube connected to the filtration system and extending from the container to a point outside the container adjacent the exterior surface of the container, wherein the outlet tube contains a flow restricting device, the flow restricting device and the venting means sized to cause a predetermined back-wash through the filtration system when air enters the container.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 76 U.S. patent(s) that reference this one
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