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. 06, 1989
Filed:
Oct. 17, 1986
Applicant:
Inventors:
Heiner Burghart, Holm, DE;
Hans Behncke, Hamburg, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A24C / ;
U.S. Cl.
CPC ...
131329 ; 73 38 ; 738651 ;
Abstract
A smoking-down device for cigarettes, wherein a piston in a smoking-down cylinder is driven by an electric stepping motor which receives a series of FM pulses per operating cycle of the smoking-down cylinder from a digital control system based on a micro-computer. Their mean frequency determines the suction or 'puff' period, their total number of pulses determining the suction volume and their modulation graph determining the suction or puff pattern of the operating cycle. All three parameters may be preset with great precision and without interaction using digital signals, via the control system.