The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 1987
Filed:
Jan. 17, 1986
William W Norton, Lincolnshire, IL (US);
Culligan International Company, Northbrook, IL (US);
Abstract
A system is provided for supplying purified water, without requiring continuous flow of water across the water purification device. A reverse osmosis unit is provided having an unpurified water inlet, a reject water outlet and a product water outlet. The unpurified water inlet is connected to a source of unpurified water. The reject water outlet and the product water outlet are connected to water regulating means. The water regulating means has outlets to drain and to an accumulator tank. When pressure in the accumulator tank is below a predetermined amount, a diaphragm responsive to the pressure operates a pair of spool valves to first automatically direct a first amount of product water only to drain. Thereafter, the spool valves automatically discontinue flow of the first amount of product water to drain and direct the product water to the accumulator tank. In this manner, the first amount of water which has been standing and was subject to osmosis and/or excessive bacteria multiplication does not enter the accumulator tank.