System for detection of the phase of an electrical signal on an alternating circuit power line

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5467011
SERIAL NO

08252075

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A data transmission system for power line carriers includes a transmitter which generates a stable carrier frequency at a bandwidth of less than one hertz. The transmitter is connected to the power line to transmit the generated frequency over the power line to a receiver. The receiver implements filters of a bandwidth of one hertz or less to attenuate any signals that do not correlate with the generated frequency. Information on the phase of the power line to which the transmitter is connected is represented in the form of a generated signal which modulates the stable frequency generated by the transmitter on the power line. The receiver is located on another portion of the power line and compares the phase information from the transmitter with the phase of the power line to which the receiver is connected and displays the resulting comparison for interpretation.

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

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
National Rural Electric Cooperative Assn.WASHINGTON, DC1
NATIONAL RURAL ELECTRIC COOPERATIVE ASSOCIATIONWASHINGTON, DC1

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hunt, Paul C Brainerd, MN 11 692

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 4801868 Circuit tracing apparatus and method 20 1987
 
Pasar, Inc. (2)
* 4491785 Tracing electrical conductors by high-frequency loading and improved signal detection 16 1981
* 4775832 Conductor tracer transmitter with non-reversing magnetic field tracing signal 16 1987
 
RADIODETECTION LIMITED OF (1)
* 4896117 Method of and apparatus for tracing faults in electrical conductors 20 1988
 
The United States of America as represented by the Secretary of the Navy (1)
* 4998059 Dual demodulating circuit tracer 10 1990
 
COOPER INDUSTRIES, INC. (1)
* 4415771 Public alert and advisory systems 158 1981
 
THE CHARLES MACHINE WORKS, INC. (1)
* 5264795 System transmitting and receiving digital and analog information for use in locating concealed conductors 111 1990
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Zircon Corporation (2)
* 6933712 Electrical circuit tracing and identifying apparatus and method 10 2002
* 2004/0008,018 Electrical circuit tracing and identifying apparatus and method 3 2002
 
Other [Check patent profile for assignment information] (6)
* 5796253 Time-domain electromagnetic geophysical mapping instruments 8 1996
7031859 Apparatus and method for identifying cable phase in a three-phase power distribution network 26 2003
* 2004/0263,147 Apparatus and method for identifying cable phase in a three-phase power distribution network 3 2004
* 2007/0229,305 Data Communication Over Power Lines 34 2007
9765979 Heat-pump system with refrigerant charge diagnostics 0 2014
9766277 Self-calibrating contactless power consumption sensing 0 2014
 
LANDIS+GYR TECHNOLOGIES, LLC (1)
9369180 Signal feedback circuit in power-line-communication systems 0 2013
 
CURRENT TECHNOLOGIES INTERNATIONAL GMBH (2)
* 2010/0262,393 System and Method for Determining a Phase Conductor Supplying Power to a Device 13 2009
* 2010/0262,395 System and Method for Determining a Phase Conductor Supplying Power to a Device 5 2010
 
EDM INTERNATIONAL, INC. (1)
6642700 System, method, field unit, reference unit and computer program product for phase tracking of electrical conductors 30 2002
 
SILVER SPRING NETWORKS, INC. (3)
8207726 Determining electric grid endpoint phase connectivity 12 2009
* 2010/0060,259 Determining Electric Grid Endpoint Phase Connectivity 43 2009
* 9263915 Determining electric grid endpoint phase connectivity 0 2012
 
ANRITSU COMPANY (2)
* 6943563 Probe tone S-parameter measurements 58 2002
* 2002/0196,033 Probe tone S-parameter measurements 0 2002
 
Geometrics Group, Inc. (1)
* 6541976 Under and above ground, radio frequency driven element, metal locating system 1 2000
 
ACLARA METERS LLC (3)
8143879 Meter phase identification 1 2008
* 2010/0164,473 METER PHASE IDENTIFICATION 6 2008
8587290 Method, system and device of phase identification using a smart meter 4 2011
 
HUNT TECHNOLOGIES, INC. (5)
* 6154488 Low frequency bilateral communication over distributed power lines 200 1997
* 6177884 Integrated power line metering and communication method and apparatus 128 1998
* 2004/0047,406 Low frequency bilateral communication over distributed power lines 24 2003
* 7791468 Power line communication system having time server 63 2007
* 2007/0126,571 Power line communication system having time server 1 2007
 
AVISTAR, INC. (1)
* 2007/0063,664 Phase identification apparatus having automatic gain control to prevent detector saturation 4 2006
 
EMERSON ELECTRIC CO. (4)
9285802 Residential solutions HVAC monitoring and diagnosis 0 2012
9551504 HVAC system remote monitoring and diagnosis 0 2014
9638436 HVAC system remote monitoring and diagnosis 0 2014
9703287 Remote HVAC monitoring and diagnosis 0 2014
 
GRID2020, INC. (3)
6549120 Device for sending and receiving data through power distribution transformers 80 2000
8159210 System for automatically detecting power system configuration 1 2009
* 2010/0007,219 System for Automatically Detecting Power System Configuration 12 2009
 
BELKIN INTERNATIONAL, INC. (2)
* 9594098 Systems and methods for measuring electrical power usage in a structure and systems and methods of calibrating the same 0 2014
* 2014/0347,039 SYSTEMS AND METHODS FOR MEASURING ELECTRICAL POWER USAGE IN A STRUCTURE AND SYSTEMS AND METHODS OF CALIBRATING THE SAME 0 2014
 
INTEL CORPORATION (1)
* 6249213 Method for transmitting information over an alternating current power line through a plurality of frequency orthogonal subchannels 37 1998
 
EMERSON CLIMATE TECHNOLOGIES, INC. (17)
9140728 Compressor sensor module 0 2008
9304521 Air filter monitoring system 0 2011
9310094 Portable method and apparatus for monitoring refrigerant-cycle systems 0 2012
8964338 System and method for compressor motor protection 2 2013
9046900 Method and apparatus for monitoring refrigeration-cycle systems 0 2013
9194894 Compressor sensor module 0 2013
9086704 Method and apparatus for monitoring a refrigeration-cycle system 0 2013
9081394 Method and apparatus for monitoring a refrigeration-cycle system 0 2013
9023136 Method and apparatus for monitoring a refrigeration-cycle system 0 2013
9021819 Method and apparatus for monitoring a refrigeration-cycle system 0 2013
9017461 Method and apparatus for monitoring a refrigeration-cycle system 0 2013
8974573 Method and apparatus for monitoring a refrigeration-cycle system 1 2013
9121407 Compressor diagnostic and protection system and method 0 2013
9310439 Compressor having a control and diagnostic module 6 2013
9590413 System and method for compressor motor protection 0 2015
9690307 Method and apparatus for monitoring refrigeration-cycle systems 0 2015
9669498 Compressor diagnostic and protection system and method 0 2015
 
Vortant Technologies, LLC (2)
* 6972690 System and method for transmission of electrical signals in imperfectly-conducting media 3 2001
9308377 System and method for transmission of electrical signals in imperfectly-conducting media 0 2005
 
GULA CONSULTING LIMITED LIABILITY COMPANY (5)
6055435 Wireless telephone connection surge suppressor 47 1997
5970127 Caller identification system for wireless phone jacks and wireless modem jacks 80 1997
6107912 Wireless modem jack 62 1997
6246868 Conversion and distribution of incoming wireless telephone signals using the power line 29 1998
6243571 Method and system for distribution of wireless signals for increased wireless coverage using power lines 135 1998
 
Iprobe AB (1)
* 6982650 Method, system and apparatus for remote measuring of electrical power 5 2000
 
THOMSON INC. (1)
5818821 Universal lan power line carrier repeater system and method 154 1996
 
CONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC. (14)
7933297 Network combining wired and non-wired segments 4 2004
7876767 Network combining wired and non-wired segments 3 2005
8885659 Local area network of serial intelligent cells 0 2005
7978726 Local area network of serial intelligent cells 3 2006
7424031 Local area network of serial intelligent cells 10 2007
7656904 Telephone system having multiple distinct sources and accessories therefor 4 2007
8908673 Local area network of serial intelligent cells 0 2007
7852874 Local area network of serial intelligent cells 10 2008
8982904 Network combining wired and non-wired segments 0 2009
8873586 Network combining wired and non-wired segments 0 2010
8867506 Network combining wired and non-wired segments 0 2010
8848725 Network combining wired and non-wired segments 0 2012
8867523 Local area network of serial intelligent cells 0 2012
8885660 Local area network of serial intelligent cells 0 2013
* Cited By Examiner