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. 01, 1983
Filed:
Dec. 22, 1980
Applicant:
Inventor:
Horace J Buttner, Harbor City, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28D / ; F28G / ;
U.S. Cl.
CPC ...
165 91 ; 165 87 ; 165 94 ;
Abstract
An improved heat transfer system of the helical screw type, including endless loop guided volute passage driven scraping means for continuously cleaning the helical screw heat transfer member to prevent the build-up of workable material on an outer surface of the helical screw, while at the same time minimizing the power necessary for rotating the helical screw.