Capacitive sensor

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5465619
SERIAL NO

08289981

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An apparatus for detecting the level of material in a container. The apparatus comprises a power source and a first electrode, positioned adjacent the container, electrically connected to the power source. The apparatus further comprises a second electrode. The second electrode is spaced from the first electrode and positioned adjacent the container. The apparatus further comprises an electrical amplifier which is electrically connected to the second electrode. The amplifier amplifies a current induced in the second electrode and generates a voltage signal. The amplifier is adapted to maintain the second electrode at a virtual ground to minimize environmental impedance effects. The apparatus further comprises a rectifier, electrically connected to the amplifier, for rectifying the voltage signal and a comparator, electrically connected to the rectifier, for comparing the voltage signal to a predetermined voltage signal corresponding to the container being full with material.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
XEROX CORPORATIONSTAMFORD, CT13701

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Benedict, Lawrence R Rushville, NY 13 399
Dezen, William L Penfield, NY 1 142
Sotack, John D Rochester, NY 10 333
Werner, Jr Alan J Rochester, NY 25 361
Zayed, Gaith O Rochester, NY 4 185

Cited Art Landscape

Patent Info (Count) # Cites Year
 
GENERAL ELECTRIC COMPANY (1)
7503179 System and method to exhaust spent cooling air of gas turbine engine active clearance control 7 2005
 
Other [Check patent profile for assignment information] (1)
* 4423628 Method and apparatus for monitoring the length of a liquid column 10 1981
 
SEIKO EPSON CORPORATION (1)
* 4868599 Device and method for storing toner waste 15 1987
 
Level Electronics, Inc. (1)
* 4987776 Level indicator 23 1989
 
DREXELBROOK CONTROLS, INC. (1)
* 4757252 Probe system for measuring the condition of materials 26 1985
 
VENTURE MEASUREMENT COMPANY LLC (1)
* 4624139 Capacitance-type material level indicator 14 1984
 
IMTEC ACCULINE, INC. (1)
* 4749988 Non-invasive liquid level sensor 37 1986
 
AMETEK, INC. (1)
* 4820973 Impedance measuring system 22 1988
 
Rank Xerox Limited (1)
* 4711561 Toner recovery device 29 1986
 
Thomson-SA (1)
* 5195010 Electrostatic discharge voltage protection circuit for a solid state instrument 17 1990
 
NIPPON SOKEN, INC. (1)
* 4603581 Sensing apparatus 33 1985
 
EUROMART CORPORATION (1)
* 5121631 Shielded level sensing system 9 1991
 
CANON KABUSHIKI KAISHA (1)
* 5198860 Image forming apparatus including means for detecting amount of toner 13 1990
 
STANDEX ELECTRONICS, INC (1)
* 5017909 Capacitive liquid level sensor 64 1989
 
Serveron Corporation (1)
* 5132626 Electrolytic storage cell monitoring system 22 1989
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (5)
* 2003/0222,639 Determining a dynamic gaps between a proximity probe and a conductive target material 1 2003
* 2003/0210,036 Device for digitally measuring electrical impedance 0 2003
* 2003/0206,001 Method for measuring a position of a conductive target material 0 2003
* 2005/0104,579 Determining gaps between a proximity probe and a conductive target material 3 2003
* 2003/0210,039 Method for measuring a gap between a proximity probe and a conductive target material 1 2003
 
IROBOT CORPORATION (85)
9008835 Remote control scheduler and method for autonomous robotic device 12 2005
8412377 Obstacle following sensor scheme for a mobile robot 11 2005
8392021 Autonomous surface cleaning robot for wet cleaning 11 2005
8670866 Autonomous surface cleaning robot for wet and dry cleaning 8 2006
7288912 Debris sensor for cleaning apparatus 104 2006
* 2007/0069,680 Debris Sensor for Cleaning Apparatus 4 2006
9144360 Autonomous coverage robot navigation system 0 2006
8584305 Modular robot 5 2006
8374721 Robot system 8 2006
8271129 Robot system 0 2006
8749196 Autonomous robot auto-docking and energy management systems and methods 6 2006
8461803 Autonomous robot auto-docking and energy management systems and methods 6 2006
8396592 Method and system for multi-mode coverage for an autonomous robot 17 2007
9128486 Navigational control system for a robotic device 1 2007
8572799 Removing debris from cleaning robots 3 2007
8528157 Coverage robots and associated cleaning bins 5 2007
8417383 Detecting robot stasis 7 2007
8954192 Navigating autonomous coverage robots 3 2007
8600553 Coverage robot mobility 1 2007
9149170 Navigating autonomous coverage robots 0 2007
9167946 Autonomous floor cleaning robot 0 2007
8788092 Obstacle following sensor scheme for a mobile robot 2 2007
8390251 Autonomous robot auto-docking and energy management systems and methods 6 2007
8739355 Autonomous surface cleaning robot for dry cleaning 7 2007
8387193 Autonomous surface cleaning robot for wet and dry cleaning 15 2007
8266754 Autonomous surface cleaning robot for wet and dry cleaning 0 2007
8266760 Autonomous surface cleaning robot for dry cleaning 0 2007
8726454 Autonomous coverage robot 28 2008
8239992 Compact autonomous coverage robot 27 2008
8478442 Obstacle following sensor scheme for a mobile robot 2 2008
8275482 Obstacle following sensor scheme for a mobile robot 0 2008
8761935 Obstacle following sensor scheme for a mobile robot 5 2008
8474090 Autonomous floor-cleaning robot 5 2008
8661605 Coverage robot mobility 5 2008
8359703 Coverage robot mobility 0 2008
8378613 Debris sensor for cleaning apparatus 2 2008
8380350 Autonomous coverage robot navigation system 24 2008
8634956 Celestial navigation system for an autonomous robot 6 2009
8594840 Celestial navigation system for an autonomous robot 31 2009
8565920 Obstacle following sensor scheme for a mobile robot 6 2009
8386081 Navigational control system for a robotic device 12 2009
9320398 Autonomous coverage robots 0 2009
8368339 Robot confinement 7 2009
8463438 Method and system for multi-mode coverage for an autonomous robot 4 2009
8428778 Navigational control system for a robotic device 16 2009
8972052 Celestial navigation system for an autonomous vehicle 6 2009
8253368 Debris sensor for cleaning apparatus 7 2010
8966707 Autonomous surface cleaning robot for dry cleaning 5 2010
8930023 Localization by learning of wave-signal distributions 4 2010
8515578 Navigational control system for a robotic device 7 2010
8516651 Autonomous floor-cleaning robot 1 2010
8774966 Autonomous surface cleaning robot for wet and dry cleaning 5 2011
8855813 Autonomous surface cleaning robot for wet and dry cleaning 5 2011
8854001 Autonomous robot auto-docking and energy management systems and methods 4 2011
8874264 Celestial navigation system for an autonomous robot 0 2011
8418303 Cleaning robot roller processing 8 2011
8438695 Autonomous coverage robot sensing 24 2011
8456125 Debris sensor for cleaning apparatus 5 2011
8782848 Autonomous surface cleaning robot for dry cleaning 5 2012
8793020 Navigational control system for a robotic device 2 2012
8780342 Methods and apparatus for position estimation using reflected light sources 13 2012
9038233 Autonomous floor-cleaning robot 1 2012
8686679 Robot confinement 2 2012
8839477 Compact autonomous coverage robot 3 2012
8978196 Coverage robot mobility 1 2012
9223749 Celestial navigation system for an autonomous vehicle 0 2012
9317038 Detecting robot stasis 1 2013
8781626 Navigational control system for a robotic device 4 2013
9144361 Debris sensor for cleaning apparatus 1 2013
9104204 Method and system for multi-mode coverage for an autonomous robot 0 2013
8761931 Robot system 0 2013
8950038 Modular robot 2 2013
9229454 Autonomous mobile robot system 0 2013
8985127 Autonomous surface cleaning robot for wet cleaning 0 2013
9492048 Removing debris from cleaning robots 0 2013
9582005 Robot confinement 0 2014
9392920 Robot system 1 2014
9622635 Autonomous floor-cleaning robot 0 2014
9360300 Methods and apparatus for position estimation using reflected light sources 2 2014
9446521 Obstacle following sensor scheme for a mobile robot 0 2014
9445702 Autonomous surface cleaning robot for wet and dry cleaning 0 2014
9480381 Compact autonomous coverage robot 0 2014
9215957 Autonomous robot auto-docking and energy management systems and methods 2 2014
9486924 Remote control scheduler and method for autonomous robotic device 0 2015
9599990 Robot system 1 2016
 
DEPUY PRODUCTS, INC. (6)
7470288 Telemetric tibial tray 9 2004
* 2005/0010,302 Telemetric tibial tray 74 2004
7704282 Orthopaedic element with self-contained data storage 3 2004
7195645 In vivo joint space measurement device and method 107 2004
* 2005/0010,300 Orthopaedic element with self-contained data storage 115 2004
* 2005/0010,301 In vivo joint space measurement device and method 16 2004
 
Instrumentarium Oy (1)
* 5735167 Method and arrangement for measuring liquid level 10 1996
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (4)
* 5987269 Toner quantity measuring technique in an electrophotographic printer 29 1998
* 6431670 Ink level sensing method and apparatus 10 2000
6472887 Capacitive sensor for sensing the amount of material in a container 18 2000
* 2004/0088,269 Capacitance sensing to estimate weight ranges for items being transferred by a conveyor system 0 2002
 
ELECTROLUX HOME PRODUCTS CORPORATION N.V. (2)
* 8944117 Method for dispensing a liquid into a container and related dispenser 0 2010
* 2012/0031,523 METHOD FOR DISPENSING A LIQUID INTO A CONTAINER AND RELATED DISPENSER 4 2010
 
CYBERLAB, INC. (1)
* 5582798 Volume sensing device 16 1995
 
SIE Sensorik-Industrie-Elektronik GmbH (2)
* 7891243 Sensor for the contactless detection of the level of a liquid and adhering high-conductivity medium, especially blood, through a non-metal wall of a container 1 2006
* 2009/0158,841 Sensor for the contactless detection of the level of a liquid and adhering high-conductivity meduim, especially blood, through a non-metal wall of a container and corresponding method 9 2006
 
XEROX (1)
* 2008/0106,753 PARTIAL ELECTRICAL DISCHARGE SYSTEM AND METHOD 1 2006
 
DEPUY SYNTHES PRODUCTS, LLC (2)
7347874 In vivo joint implant cycle counter 5 2004
* 2005/0010,299 In vivo joint implant cycle counter 57 2004
 
XEROX CORPORATION (10)
* 2006/0038,574 Method of detecting an arcing event and a printing machine arranged with the same 2 2004
* 2006/0285,899 Waste toner vibration device 1 2005
7555246 Development sub-system in-line cleaning system 3 2006
7428398 Development sub-system in-line cleaning system 1 2006
* 2007/0292,164 Development sub-system in-line cleaning system 0 2006
* 2007/0292,163 Development sub-system in-line cleaning system 0 2006
8199343 Partial electrical discharge system and method 0 2006
8068748 Methods and systems for sensing an amount of material in a toner cartridge 1 2008
* 2009/0263,146 TONER LEVEL SENSING 1 2008
8256869 Capacitive drop mass measurement system 1 2009
 
HEIDELBERG DIGITAL L.L.C. (2)
* 6670817 Capacitive toner level detection 89 2001
* 6731885 Capacitive probe toner level detector assembly 5 2002
 
MITSUBISHI ELECTRIC RESEARCH LABORATORIES, INC. (1)
* 6546795 Wireless liquid level sensing system and method 34 2001
 
RICOH COMPANY, LTD. (1)
* 7061391 Method, system, and program for monitoring a consumable resource used by a system 14 2001
 
LEXMARK INTERNATIONAL, INC. (3)
6580881 Method of detecting waste toner in a container of an image forming apparatus 18 2001
* 7555231 Capacitive toner level sensor and methods of use 25 2006
* 2008/0069,576 Capacitive Toner Level Sensor and Methods of Use 4 2006
 
FUJI XEROX CO., LTD. (1)
* 5995778 Apparatus and method for detecting toner density in a liquid developer 3 1998
 
Cefriel—Societa' Consortile a Responsabilita' Limitata (1)
8631697 Measuring device, container and system for monitoring and managing a container 1 2009
 
Bently Nevada, LLC (15)
6346807 Digital eddy current proximity system: apparatus and method 19 1999
6664782 Digital eddy current proximity system: apparatus and method 11 2002
6906532 Method for digitally measuring electrical impedance 7 2003
6825676 Apparatus for determining dynamic gaps between a proximity probe and a conductive target material 0 2003
6919731 Method for measuring a position of a conductive target material 1 2003
6819122 Method for measuring a gap between a proximity probe and a conductive target material 8 2003
6765395 Method for measuring a gap between a proximity probe and a conductive target material 2 2003
6954062 Apparatus for determining gaps between a proximity probe and a conductive target material 1 2003
6850077 Method for measuring a characteristic of a conductive target material using a proximity probe 4 2003
6850078 Method for measuring a gap between a proximity probe and a conductive target material 0 2003
6847217 Method for measuring a gap between a proximity probe and a conductive target material 2 2003
6842020 Method for measuring a gap between a proximity probe and a conductive target material 1 2003
6798194 Method for measuring a gap between a proximity probe and a conductive target material 2 2003
6756794 Apparatus for determining a gap between a proximity probe component and a conductive target material 3 2003
6861852 Method for measuring a gap between a proximity probe and a conductive target material 1 2003
 
BAXTER INTERNATIONAL INC. (5)
6769231 Apparatus, method and flexible bag for use in manufacturing 12 2001
6905314 Pump having flexible liner and compounding apparatus having such a pump 59 2001
* 2004/0144,799 Liquid dispenser and flexible bag therefor 9 2003
7007824 Liquid dispenser and flexible bag therefor 15 2003
7237691 Flexible bag for fluent material dispenser 15 2005
 
EASTMAN KODAK COMPANY (1)
* 5933657 Making of film scrolls for prewind cameras 6 1996
 
IROBOT (1)
8800107 Vacuum brush 3 2011
 
CHEMTRONICS CO., LTD. (2)
* 8789414 Level sensing apparatus 1 2009
* 2011/0259,098 LEVEL SENSING APPARATUS 2 2009
 
BECTON, DICKINSON AND COMPANY (2)
* 8815574 Detection method and apparatus for detecting microbial growth 0 2005
9400272 Detection method and apparatus for detecting microbial growth 0 2014
 
CANON KABUSHIKI KAISHA (11)
* 6254212 Method and device for determining the quantity of product present in a reservoir, notably that of ink present in an image forming device 16 1997
* 6325477 Method and device for determining the quantity of product present in a reservoir, a product reservoir and a device for processing electrical signals intended for such a determination device 0 1998
* 6183054 Method and device for determining the quantities of consumable products contained in reservoirs grouped together next to one another and document printing device using this method 4 1998
* 6095629 Device for determining quantities of consumable products contained in reservoirs and a document printing device having several different reservoirs of pigmented products 5 1998
* 6293144 Method and device for monitoring the consumption of a product, for example a printing ink, using a low-pass filter 7 1998
* 6089688 Method and device for monitoring the consumption of a product, such as an ink, contained in a reservoir 24 1998
* 6501915 Image forming apparatus having detection electrode outside developing thereof 2 2001
6892035 Developing device, a process cartridge, and an electrophotographic image forming apparatus for detecting an amount of developer 10 2001
6415112 Toner remaining amount detecting device, toner remaining amount detecting method, process cartridge and electrophotographic image forming apparatus 10 2001
* 8036544 Image forming apparatus and method of detecting amount of residual developer 3 2008
* 2009/0052,918 IMAGE FORMING APPARATUS AND METHOD OF DETECTING AMOUNT OF RESIDUAL DEVELOPER 1 2008
* Cited By Examiner