U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Water processor having automatic shutoff and bypass means

Patent 4681677 Issued on July 21, 1987. Estimated Expiration Date: Icon_subject August 5, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

1933369

2617766

3509998

3827558

3856676

Process for purifying tap water
Patent #: 3974070
Issued on: 08/10/1976
Inventor: Popov ,   et al.

Water filter device
Patent #: 4001120
Issued on: 01/04/1977
Inventor: Gelman ,   et al.

Insoluble adsorber resin suitable for treating drinking water and sewage
Patent #: 4025705
Issued on: 05/24/1977
Inventor: Corte ,   et al.

Liquid filtering device
Patent #: 4048071
Issued on: 09/13/1977
Inventor: Yamada ,   et al.

Apparatus for purifying water
Patent #: 4059522
Issued on: 11/22/1977
Inventor: Polley ,   et al.

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Inventors

Assignee

Application

No. 06/762816 filed on 08/05/1985

US Classes:

210/88, Meter-controlled cyclic systems210/100, Flow cut-off requiring reset210/111, Responsive to prefilt accumulation or filter clogging210/130, Fluid pressure responsive by-pass210/134, Plural elements controlled210/259, Diverse210/266, With spaced non-particulate separating means210/282, Removable cartridge or hand-manipulated container210/295, Including a filter210/90, Fluid pressure responsive210/91, Position or extent of motion210/94Transparent

Examiners

Primary: Sadowski, David R.

Attorney, Agent or Firm

International Classes

B01D 36/00 (20060101)
B01D 35/14 (20060101)
B01D 35/143 (20060101)
C02F 9/00 (20060101)
C02F 1/00 (20060101)
C02F 1/42 (20060101)
C02F 1/44 (20060101)
C02F 1/28 (20060101)

Abstract

A water treatment or processor device for household use or commercial use (for example, in a restaurant) is provided with fail-safe features in accordance with this invention to shut the treatment device "off" when an element thereof has become ineffective, such as the saturation of an adsorption element or the clogging of a filter element. Once the device is turned "off", it cannot be restarted until the depleted element has been replaced.

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