Piezoresistive foot pressure measurement

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6216545
SERIAL NO

08557863

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method and apparatus for measuring pressures exerted on human feet or horses' hooves comprises a rectangular array of piezoresistive force sensors encapsulated in a thin polymer package that is inserted into a shoe, or incorporated into a sock that may be pulled over a foot or hoof. The preferred embodiment employs novel piezoresistive normal force or pressure sensing elements which include a polymer fabric mesh impregnated with conductive particles suspended in an elastomeric vehicle, preferably silicone rubber. The piezoresistive mesh layer is sandwiched between an array of row and column conductor strip laminations, preferably made of a nylon mesh impregnated with printed metallic paths. In a variation of the basic embodiment, each normal force sensor element is bordered by laterally and longitudinally disposed pairs of shear force sensor elements, each of the latter comprising a pair of adjacent resilient piezoresistive pads that have longitudinally contacting lateral surfaces. The pads are slidably movable, and when urged into more or less intimate contact in response to shear forces directed normal to their tangent contact plane, the electrical resistance between the pads varies in a predetermined way as a function of the shear forces.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • Assignment data not available. Check PTO

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Taylor, Geoffrey L 211 Oak Street, Winnipeg, Manitoba, CA 24 711

Cited Art Landscape

Patent Info (Count) # Cites Year
 
AT&T LABS, INC. (1)
* 5237879 Apparatus for dynamically varying the resolution of a tactile sensor array 54 1991
 
FULLEN SYSTEMS, LLC (1)
* 5323650 System for continuously measuring forces applied to the foot 240 1993
 
Chattanooga Corporation (1)
* 4745930 Force sensing insole for electro-goniometer 104 1986
 
CLEVELAND MEDICAL DEVICES INC. (1)
* 5408873 Foot force sensor 105 1994
 
BMF CORPORATION (1)
* 5079949 Surface pressure distribution detecting element 66 1990
 
Tekscan, Incorporated (1)
5033291 Flexible tactile sensor for measuring foot pressure distributions and for gaskets 230 1989
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (17)
* 2003/0119,391 Conductive pressure sensitive textile 10 2002
6931938 Measuring pressure exerted by a rigid surface 10 2002
* 2004/0112,138 Measuring pressure exerted by a rigid surface 9 2002
* 2004/0027,228 Strain gauge devices 8 2003
* 7337680 System and method for measuring plantar foot pressure 13 2003
* 7673528 Flexible modular sensor systems 7 2006
* 2006/0254,369 FLEXIBLE MODULAR SENSOR SYSTEMS 21 2006
* 2009/0143,174 AUTOMATED LINE CALLING SYSTEM 1 2006
8583272 Orthopods and equipment to generate orthopedic supports from computerized data inputs 4 2007
* 2007/0245,504 Orthopods and Equipment to Generate Orthopedic Supports from Computerized Data Inputs 3 2007
* 2009/0293,641 METHOD OF MEASURING THE PERFORMANCE OF A PROSTHETIC FOOT 6 2009
* 2012/0010,730 FOOT PROSTHESIS WITH RESILIENT MULTI-AXIAL ANKLE 4 2011
* 8815160 Chemical vapor sensor with improved temperature characteristics and manufacturing technique 1 2011
9020626 Orthopods and equipment to generate orthopedic supports from computerized data inputs 1 2013
* 9816882 Electronic skin, preparation method and use thereof 0 2014
9817439 System, method and device for designing, manufacturing, and monitoring custom human-interfacing devices 0 2016
9677928 Method, device and system for fitness tracking 0 2016
 
STRYKER CORPORATION (1)
* 2009/0099,480 System and method for patient monitoring 32 2008
 
STC.UNM (1)
* 9671297 Pliable pressure-sensing fabric 0 2013
 
SENSORIA INC. (4)
9186092 System, garment and method 3 2008
* 2011/0015,498 SYSTEM, GARMENT AND METHOD 18 2008
8925392 Sensors, interfaces and sensor systems for data collection and integrated remote monitoring of conditions at or near body surfaces 8 2013
9427179 System, garment and method 0 2015
 
The Goodyear Tire & Rubber Company (2)
* 6912914 Three dimensional stress vector sensor array and method therefor 3 2003
* 2005/0000,298 Three dimensional stress vector sensor array and method therefor 1 2003
 
AU OPTRONICS CORPORATION (1)
* 2005/0199,597 [LASER ANNEALING APPARATUS AND LASER ANNEALING PROCESS] 3 2004
 
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE (1)
8661917 Method for manufacturing piezoresistive material, piezoresistive composition and pressure sensor device 1 2011
 
LEXMARK INTERNATIONAL, INC. (2)
* 8212575 Device for analyzing size and location of conductive item 0 2008
* 2010/0162,796 Device for Analyzing Size and Location of Conductive Item 1 2008
 
OSSUR ICELAND EHF (1)
D795433 Prosthetic foot cover 0 2016
 
THE UNIVERSITY OF TOKYO (2)
* 7973274 Tactile sensor module with a flexible substrate adapted for use on a curved surface and method of a mounting tactile sensor 6 2006
* 2009/0134,318 TACTILE SENSOR MODULE AND METHOD OF MOUNTING TACTILE SENSOR 1 2006
 
SENCORABLES LLC (3)
8820173 Contact sensors and methods for making same 4 2010
* 9095275 Contact sensors and methods for making same 2 2010
* 2012/0123,716 CONTACT SENSORS AND METHODS FOR MAKING SAME 1 2010
 
Intelligent Textiles Limited (1)
* 7365031 Conductive pressure sensitive textile 33 2001
 
Patrick Dolan (1)
* 2012/0121,467 CHEMICAL VAPOR SENSOR WITH IMPROVED TEMPERATURE CHARACTERISTICS AND MANUFACTURING TECHNIQUE 0 2011
 
STERLING INVESTMENTS LC (1)
* 2008/0216,593 Device for promoting toe-off during gait 8 2008
 
VISTA MEDICAL, LTD. (2)
* 7201063 Normal force gradient/shear force sensors and method of measuring internal biological tissue stress 32 2004
* 2005/0241,409 Normal force gradient/shear force sensors and method of measuring internal biological tissue stress 10 2004
 
JAOSHVILI, ALEXANDER (2)
* 7984544 Method for manufacturing long force sensors using screen printing technology 12 2006
* 2008/0314,165 Method for Manufacturing Long Force Sensors Using Screen Printing Technology 2 2006
 
KONINKLIJKE PHILIPS ELECTRONICS N.V. (1)
* 2010/0162,832 SHEAR FORCE AND PRESSURE MEASUREMENT IN WEARABLE TEXTILES 9 2008
 
GREAT LAKES NEUROTECHNOLOGIES INC. (3)
* 6955094 Sensor for measuring shear forces 9 2003
* 7918142 Sensor for measuring shear forces 3 2005
* 9696228 Sensor and method for measuring forces on an object or device used during physical activity 0 2016
 
CLEMSON UNIVERSITY (3)
7849751 Contact sensors and methods for making same 20 2005
* 8234929 Contact sensors and methods for making same 4 2010
* 2011/0138,932 CONTACT SENSORS AND METHODS FOR MAKING SAME 1 2010
 
PATIENTECH LLC (9)
8533879 Adaptive cushion method and apparatus for minimizing force concentrations on a human body 7 2008
8161826 Elastically stretchable fabric force sensor arrays and methods of making 25 2009
8661915 Elastically stretchable fabric force sensor arrays and methods of making 9 2012
8904876 Flexible piezocapacitive and piezoresistive force and pressure sensors 12 2012
8966997 Pressure sensing mat 3 2012
8800386 Force sensing sheet 3 2012
8997588 Force detecting mat with multiple sensor types 3 2013
* 8875331 Adaptive cushion method and apparatus for minimizing force concentrations on a human body 2 2013
* 9642470 Force sensing sheet 0 2014
 
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA (3)
* 7726206 Foot pressure alert and sensing system 31 2007
* 2008/0287,832 FOOT PRESSURE ALERT AND SENSING SYSTEM 39 2007
9271665 Fabric-based pressure sensor arrays and methods for data analysis 7 2012
 
3M INNOVATIVE PROPERTIES COMPANY (1)
* 2004/0100,448 Touch display 24 2002
 
LECAT, PAUL (1)
9140614 Conductive cloth sensor 1 2013
 
BEBOP SENSORS, INC. (8)
9076419 Multi-touch pad controller 8 2013
9075404 Foot-operated controller 9 2014
9442614 Two-dimensional sensor arrays 6 2014
9753568 Flexible sensors and applications 0 2015
9696833 Promoting sensor isolation and performance in flexible sensor arrays 0 2015
9546921 Piezoresistive sensors and sensor arrays 4 2015
9652101 Two-dimensional sensor arrays 0 2015
9721553 Sensor-based percussion device 0 2016
 
OSSUR HF (7)
* 7581454 Method of measuring the performance of a prosthetic foot 33 2004
* 2006/0058,893 Method of measuring the performance of a prosthetic foot 2 2004
* 7891258 Method of measuring the performance of a prosthetic foot 33 2009
* 9132022 Foot prosthesis with resilient multi-axial ankle 4 2011
8961618 Prosthetic foot with resilient heel 8 2012
9668887 Foot prosthesis with resilient multi-axial ankle 0 2015
D797292 Prosthetic foot plate 0 2015
 
ENHANCED SURFACE DYNAMICS, INC. (2)
9513177 System and method for rapid data collection from pressure sensors in a pressure sensing system 1 2011
9671304 Methods and systems for the manufacture and initiation of a pressure detection mat 0 2012
 
BeBop Senors, Inc. (1)
9710060 Sensor system integrated with a glove 0 2015
 
DENSO CORPORATION (5)
* 6626046 Pressure-sensitive resistor sensor having electrodes with reduced contact resistance deviation 4 2001
* 6829942 Pressure sensor 13 2003
* 2004/0000,195 Pressure sensor 4 2003
* 7554250 Laminate-type piezoelectric element and method of producing the same 49 2006
* 2007/0164,638 Laminate-type piezoelectric element and method of producing the same 5 2006
 
TRUSTEES OF BOSTON UNIVERSITY (2)
* 6546813 Patient monitoring system employing array of force sensors on a bedsheet or similar substrate 25 2001
6840117 Patient monitoring system employing array of force sensors on a bedsheet or similar substrate 69 2003
 
FOSTER-MILLER TECHNOLOGIES, INC. (1)
* 2005/0171,456 Foot pressure and shear data visualization system 13 2004
 
PARICON TECHNOLOGIES CORPORATION (2)
* 6769313 Flexible tactile sensor 24 2002
* 2003/0051,561 Flexible tactile sensor 4 2002
* Cited By Examiner