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:
Jun. 05, 1990
Filed:
Jun. 08, 1989
William L Hughes, Rapid City, SD (US);
Harold J Manning, Pasco, WA (US);
Other;
Abstract
An improved rotary kiln having an elongated kiln member formed of refractory material and supported for rotation, a tubular liner in the kiln member formed of electrically conductive material, a stationary tubular structural non-electrically conductive member concentrically surrounding the kiln and of interior diameter greater than the exterior diameter of the kiln providing an annular space therebetween, an induction coil wound on the exterior of the tubular structural member and an AC source connected to the induction coil and means of rotating the kiln member, the induction coil heating the tubular liner to heat contents within the kiln as the contents are tumbled by rotation of the kiln.