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. 12, 1991
Filed:
May. 04, 1990
Applicant:
Inventors:
James R Roden, Phoenix, AZ (US);
Michael J Roden, Gilbert, AZ (US);
Assignee:
Professional Chemicals Corporation, Chandler, AZ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47L / ; F25B / ;
U.S. Cl.
CPC ...
15321 ; 153401 ; 165 51 ;
Abstract
A cleaning system utilizes heat from an internal combustion engine to heat cleaning liquid which is sprayed onto a surface to be cleaned. The internal combustion engine drives a vacuum pump which withdraws air and cleaning liquid through a vacuum nozzle for retrieving cleaning liquid and soil. The heated air leaving a vacuum pump is combined with heated exhaust gasses from said engine and heat from the mixture is extracted to heat the cleaning liquid. The cleaning liquid may be further heated by heat extracted from the engine by a cooling system.