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:
Nov. 10, 1981
Filed:
Oct. 21, 1980
Applicant:
Inventors:
Stanley F Rak, Mundelein, IL (US);
Donald P DeVale, Sycamore, IL (US);
Roger Rehfeldt, Vernon Hills, IL (US);
Assignee:
Culligan International Company, Northbrook, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
210 961 ; 210140 ;
Abstract
A novel electronic control circuit which utilizes an improved and greatly simplified arrangement for producing the reference voltage and which includes a probe which includes two pairs of spaced electrodes which are connected in a bridge circuit so that both a reference signal and a control signal is obtained for closing an energizing circuit and latch it until it is time for regeneration and in which the regeneration will occur only at preset times so as to not interfere with normal use.