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:
Aug. 21, 1990
Filed:
Mar. 16, 1988
Applicant:
Inventors:
Donald L Roberts, Winston-Salem, NC (US);
David W Boldridge, Winston-Salem, NC (US);
Assignee:
R. J. Reynolds Tobacco Company, Winston-Salem, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A24D / ;
U.S. Cl.
CPC ...
131336 ; 1311981 ; 1311982 ;
Abstract
A variable ventilation mouthpiece for a smoking article includes first and second sets of vents, the first set serving to admit ambient air into the mouthpiece, and the second set adapted to variably introduce the admitted air into the smokestream for varying the level for dilution of the smokestream in relation to the suction applied by the smoker to the mouthpiece.