Measuring and testing – With fluid pressure – Porosity or permeability
Patent
1983-04-29
1985-09-03
Levy, Stewart J.
Measuring and testing
With fluid pressure
Porosity or permeability
73 41, G01N 1508, G01M 304
Patent
active
045384509
ABSTRACT:
A cigarette testing apparatus wherein each end of the wrapper of a cigarette advancing with a rotary conveyor past a testing station receives a stream of gaseous testing fluid from a conduit which is connected with a source of testing fluid, and wherein a further conduit connects the interior of the wrapper at the testing station with an electropneumatic transducer which generates signals denoting the condition of successively tested wrappers. In order to prevent columns of testing fluid in the conduits from oscillating as a result of abrupt establishment and/or abrupt termination of communication between such conduits and the wrappers of cigarettes moving toward, past and beyond the testing station and from thereby distorting the signals which are generated by the transducer, at least one such conduit admits a stream of fluid into an oscillation-preventing device having an injector nozzle serving to convert the inflowing stream into a coherent laminar flow which traverses, without guidance, a chamber whose interior is maintained at atmospheric pressure, and which thereupon advances toward the testing station or toward the transducer by flowing through an intercepting orifice. Alternatively, the nozzle can receive testing fluid from the chamber and then directs the laminar flow toward one end of the wrapper of the cigarette at the testing station.
REFERENCES:
patent: 3948084 (1976-04-01), Heitmann et al.
patent: 4223551 (1980-09-01), Greve et al.
patent: 4403501 (1983-09-01), Pezzi
Hauni-Werke Korber & Co. KG
Kontler Peter K.
Levy Stewart J.
Roskos Joseph W.
LandOfFree
Apparatus for testing cigarettes or the like does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for testing cigarettes or the like, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for testing cigarettes or the like will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-607364