Electrostatic flow meter

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United States of America Patent

PATENT NO 4594901
SERIAL NO

06669966

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The mass flow rate of particles conveyed by a gaseous medium through a conduit is measured by an electrostatic flow meter comprising a grounded electrical conductor in contact with a semiconductive static charge-generating element exposed to the moving particles. As the particles pass the semi-conductive, static charge-generating element, they impart a static charge to the element which is transferred by the conductor to ground. The resulting current, which can be measured by any suitable current measuring means, is proportional to the mass flow rate of the particles.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
KIMBERLY-CLARK WORLDWIDE, INC.NEENAH, WI3438

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Norman, Eugene Green Bay, WI 1 13

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (3)
* 2005/0158,366 Method and apparatus for producing uniform small portions of fine powders and articles thereof 1 2005
* 2009/0232,886 ORAL DOSAGE COMBINATION PHARMACEUTICAL PACKAGING 12 2009
* 2010/0037,818 METHOD AND APPARATUS FOR PRODUCING UNIFORM SMALL PORTIONS OF FINE POWDERS AND ARTICLES THEREOF 0 2009
 
MICRODOSE THERAPEUTX, INC. (14)
* 5699649 Metering and packaging device for dry powders 37 1996
* 5960609 Metering and packaging method and device for pharmaceuticals and drugs 30 1998
6923979 Method for depositing particles onto a substrate using an alternating electric field 27 1999
6428809 Metering and packaging of controlled release medication 16 1999
6702683 Metering and packaging of controlled release medication 9 2002
7404968 Metering and packaging of controlled release medication 75 2004
* 2007/0087,048 Oral dosage combination pharmaceutical packaging 24 2006
7632533 Method and apparatus for producing uniform small portions of fine powders and articles thereof 6 2007
* 2009/0087,483 ORAL DOSAGE COMBINATION PHARMACEUTICAL PACKAGING 59 2007
8439033 Inhalation device 3 2008
* 2009/0090,361 INHALATION DEVICE 1 2008
8991390 Inhalation device and method 0 2011
9132246 Inhalation device 0 2013
9539400 Inhalation device 0 2015
 
PCME LIMITED (1)
* 6192740 Method and apparatus for detecting particles in a flow 14 1995
 
OXFORD INSTRUMENTS AMERICA, INC. (1)
* 4714890 Flow measuring apparatus with analog, essentially linear output 13 1984
* Cited By Examiner