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. 20, 1993
Filed:
Jun. 25, 1992
Douglas W Smith, Port Coquitlam, British Columbia, CA;
Other;
Abstract
A heat exchanger for efficient transfer of sensible heat between a highly viscous fluid and a secondary fluid. This exchanger has an annular passage formed between an inner cylinder and outer cylinder. The highly viscous fluid passes through the annular passage while the secondary fluid passes both inside the inner cylinder and outside of the outer cylinder making both cylinders heat transfer surfaces. A scraper mechanism rotates within the annular passage which scrapes both heat transfer surfaces. The scraper mechanism driven by the pressure exerted by the fluid to be cooled. This scraping action serves to both continually clean the surfaces and to enhance the heat transfer efficiency.