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:
Dec. 22, 1992
Filed:
Oct. 18, 1989
Thomas W Peterson, South Haven, MI (US);
John W Vanden Bos, Holland, MI (US);
David Mc Leod, Roosevelt Park, MI (US);
JWI, Inc., , MI (US);
Abstract
A batch-type dryer, such as for sludge, having a generally upwardly-opening channel-like drying chamber which is closed at opposite ends. The chamber is defined by a generally U-shaped sidewall having an arcuate bottom portion generated about a radius so as to define a generally semi-cylindrical configuration. The edges of this semi-cylindrical bottom wall are joined to straight sidewall parts which project upwardly in generally parallel relationship. An auger-type rotor extends axially along the bottom of the chamber to agitate the material therein. A heat exchanger is associated with and extends around at least the arcuate bottom wall of the chamber. The U-shaped wall of the chamber has the central upwardly-extending plane thereof disposed at a selected angle, preferably about 30.degree., relative to the vertical so that the material, when the agitator rotates, remains in intimate heat-transfer contact with the arcuate bottom wall over substantially the full 180.degree. extent thereof.