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:
Oct. 06, 1981
Filed:
Oct. 29, 1979
George W Swisher, Jr, Oklahoma City, OK (US);
David L Garbelman, Edmond, OK (US);
Arthur G Shaw, Mustang, OK (US);
CMI Corporation, Oklahoma City, OK (US);
Abstract
Annular lands are mounted on the inner periphery of the tubular shell of a drum for an asphalt mixing apparatus of the type wherein the drum is disposed on a slant and rotated so that flighting arranged about the inner periphery of the drum lifts and drops aggregate and asphalt across the drum to transport the aggregate and asphalt toward the lower end of the drum. Portions of the flighting are mounted in the inner periphery of the shell and portions are mounted on the annular lands. The lands reduce the inside diameter of the drum in selected regions thereof to establish differing advance rates of aggregate and asphalt through the drum in different regions thereof so as to selectively vary the density of veils of asphalt and aggregate across the drum with axial location within the drum.