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. 21, 1992
Filed:
Sep. 05, 1989
Gerhard Richter, 4200 Oberhausen 11, DE;
Heinz-Herbert Lindenau, 4200 Oberhausen 11, DE;
Other;
Abstract
A method and an apparatus for transporting commodities, especially liquid commodities above their congealing temperature in a tanks or tank containers. At least a partial flow of hot exhaust gases of an internal combustion engine of a tank vehicle or tank container vehicle flows through a heat exchanger through which passes the heat transfer oil in a closed cycle and yields heat to the heat transfer oil and an electrically heated heat exchanger yields heat to the heat transfer oil and the heat transfer oil transfers heat to the commodity through a tank or tank container wall heat exchanger. The heat transfer oil is conducted in a closed cycle in a regulation circuit including the heat exchanger through which the exhaust gas passes and the electrical heat exchanger. The temperature of the heat transfer oil is controlled as a function of a variable reference and the variable reference is preset as a function of the temperature of the commodity to be transported and contained in the tank or tank container, so that the variable reference is always higher than a specified temperature of the commodity to be transported.