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. 17, 1986
Filed:
May. 08, 1984
Applicant:
Inventors:
Charles T Higgins, Richmond, VA (US);
H Neal Nunnally, Richmond, VA (US);
Assignee:
Philip Morris Incorporated, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A24C / ;
U.S. Cl.
CPC ...
131280 ; 131 844 ; 131905 ; 131906 ; 131908 ;
Abstract
A control system for a cigarette making machine to provide improved cigarette rod weight control by continual adjustment of a servo-positioned ecreteur knife at the tobacco supply vacuum belt of the cigarette maker. The servo is positioned by a dual mode control system wherein one mode is based on long term feedback of cigarette rod density, measured by a .beta. ray gauge and a second mode based on a high speed adaptive feed-forward control based on tobacco density on the supply vacuum belt measured by a pneumatic gauge.