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:
Sep. 19, 1989
Filed:
Feb. 03, 1989
J Don Brock, Chattanooga, TN (US);
James G May, Hixson, TN (US);
Astec Industries, Inc., Chattanooga, TN (US);
Abstract
An asphalt plant apparatus includes an inclined rotary drum dryer, the lower end of which is received within a concentric fixed sleeve. Aggregate is introduced into the upper end of the rotary drum dryer for heating and drying and is discharged from the lower end of the drum into an annular space between the drum and the concentric fixed sleeve. Recycleable asphalt pavement (RAP) and fines may be introduced into the annular space along with the heated and dried aggregate. Flights on the exterior of the rotating drum mix the aggregate and RAP and move the mixture toward the opposite end of the concentric fixed sleeve, heat from the heated aggregate, from the flights, and from the hot shell of the drum melting the asphaltic content of the RAP. Liquid asphalt is introduced into the sleeve for mixing along with the aggregate and RAP, and the resulting mixture is discharged from the sleeve for use as an asphalt paving composition.