Measuring and testing – With fluid pressure – Porosity or permeability
Patent
1996-06-25
1998-02-17
Brock, Michael
Measuring and testing
With fluid pressure
Porosity or permeability
G01N 1508
Patent
active
057193282
ABSTRACT:
A device is provided for testing a pressure drop across a cigarette filter rod. The device includes an expansible sleeve for encapsulating a filter rod and a two stage vacuum pump connected thereto. A first controllable valve connects the outer surface of the sleeve to the vacuum pump to expand the sleeve so that a filter rod can be inserted. The first controllable valve also connects the end of the sleeve to the vacuum pump so that a measurable pressure drop is created across the filter rod. A second controllable valve is connected between an exhaust port of the vacuum pump and the end of the sleeve so that, after the testing has been completed, the filter rod will be ejected from the sleeve. The pressure testing device is thus self contained and does not require an external source of vacuum or compressed air.
REFERENCES:
patent: 4069704 (1978-01-01), Grant et al.
patent: 4223551 (1980-09-01), Greve et al.
Celanese Digital Pressure-Drop Tester Instruction Manual issued Sep. 1978 by Celanese Fibers Marketing Company.
Brock Michael
Clements Gregory N.
Hoechst Celanese Corporation
Politzer Jay L.
LandOfFree
Pressure drop tester for filter rods does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pressure drop tester for filter rods, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure drop tester for filter rods will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1785365