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:
Feb. 07, 1989
Filed:
Sep. 11, 1987
Applicant:
Inventors:
Bernard Gurstein, Canoga Park, CA (US);
Russell S Gurstein, Agoura Hills, CA (US);
Assignee:
U.S. Products, Inc., Agoura Hills, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340603 ; 15319 ; 219327 ; 340540 ;
Abstract
A cleaning machine for carpet, upholstery, draperies, and the like is designed with a safety system to prevent the cleaning liquid from being inadvertently overheated. The system senses the electrical conductivity or the density of the liquid and then limits the heating to a temperature which has been programmed to correspond that conductivity or density.