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:
May. 05, 1987
Filed:
May. 09, 1985
Hauni-Werke Korber & Co. KG, Hamburg, DE;
Abstract
The wrappers of filter cigarettes are tested during transport in the peripheral flutes of a drum-shaped conveyor through a testing station where at least one end of the wrapper receives air at a previously stabilized pressure. The stabilized pressure is monitored by an electropneumatic transducer which further monitors the pressure differential between the interior and the exterior of the wrapper at the testing station and transmits appropriate signals to a computer which generates test signals by forming a quotient from the signals denoting the pressure differential and the signals denoting the stabilized pressure. The computer can further process and evaluate signals denoting a selected reference pressure as well as the pressure of air which is used to reduce the likelihood of leakage of air from the interior of the wrapper at the testing station.