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:
Apr. 23, 1985
Filed:
Feb. 16, 1983
Applicant:
Inventor:
Warren A Brackmann, Mississauga, CA;
Assignee:
Rothmans of Pall Mall Canada Limited, Don Mills, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A24B / ; A24B / ;
U.S. Cl.
CPC ...
131304 ; 131305 ; 34 46 ; 34 34 ;
Abstract
Drying of tobacco particles in heated rotary drum drier is improved by flowing air through the drum at a flow rate, usually at least 10 ft./sec. (3.25 m/sec), which imparts translational or linear motion to the particles. The translational motion causes the particles to become classified based on size and weight and thereby to cause smaller particles to pass through the drum at a faster rate than larger particles. In this way, smaller particles are less exposed to the drying heat than larger ones, so that overdrying of small particles is avoided and overall filling power is improved.