US Patent No: 4,757,297

Number of patents in Portfolio can not be more than 2000

Cable with high frequency suppresion

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Importance

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Abstract

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An ignition cable which applies ignition current from a power source to a spark plug of a spark ignited internal combustion engine while attenuating radio frequency currents. An inner elongated electrically conductive metallic core made of a high permeability material has an electrically semiconductive layer disposed thereabout and in intimate contact therewith. Insulation surrounds the semiconductive layer. Direct current is effectively and preferentially conducted by the inner core to provide ignition current, while high frequency currents are crowded by the skin effect into the semiconductive layer, where they are damped by the resistance thereof.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
COOPER AUTOMOTIVE PRODUCTS, INC.HOUSTON, TX23

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Frawley, Lanny J St. Charles, IL 5 90

Cited Art Landscape

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Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
GENERAL ELECTRIC COMPANY (1)
* 5,166,477 Cable and termination for high voltage and high frequency applications 104 1991
 
Other [Check patent profile for assignment information] (1)
* 5,274,712 High resistivity inner shields for audio cables and circuits 14 1992
 
PPC BROADBAND, INC. (56)
7,828,595 Connector having conductive member and method of use thereof 79 2009
7,845,976 Connector having conductive member and method of use thereof 76 2009
7,833,053 Connector having conductive member and method of use thereof 76 2009
8,029,315 Coaxial cable connector with improved physical and RF sealing 62 2009
8,287,320 Coaxial cable connector having electrical continuity member 31 2009
7,892,005 Click-tight coaxial cable continuity connector 83 2010
8,152,551 Port seizing cable connector nut and assembly 36 2010
8,079,860 Cable connector having threaded locking collet and nut 53 2010
8,113,879 One-piece compression connector body for coaxial cable connector 17 2010
8,313,345 Coaxial cable continuity connector 29 2010
8,167,636 Connector having a continuity member 46 2010
8,323,053 Connector having a constant contact nut 16 2010
8,167,635 Dielectric sealing member and method of use thereof 39 2010
8,167,646 Connector having electrical continuity about an inner dielectric and method of use thereof 32 2010
8,075,338 Connector having a constant contact post 54 2010
7,950,958 Connector having conductive member and method of use thereof 74 2010
8,414,322 Push-on CATV port terminator 9 2010
8,337,229 Connector having a nut-body continuity element and method of use thereof 29 2011
8,398,421 Connector having a dielectric seal and method of use thereof 18 2011
8,192,237 Coaxial cable connector having electrical continuity member 72 2011
8,444,445 Coaxial cable connector having electrical continuity member 9 2011
8,342,879 Coaxial cable connector 4 2011
8,366,481 Continuity maintaining biasing member 21 2011
8,388,377 Slide actuated coaxial cable connector 2 2011
8,348,697 Coaxial cable connector having slotted post member 11 2011
8,157,589 Connector having a conductively coated member and method of use thereof 28 2011
8,591,244 Cable connector 12 2011
8,465,322 Coaxial cable connector 5 2011
8,506,325 Cable connector having a biasing element 22 2011
9,172,155 Connector having a conductively coated member and method of use thereof 0 2012
8,313,353 Coaxial cable connector having electrical continuity member 30 2012
8,573,996 Coaxial cable connector having electrical continuity member 2 2012
8,382,517 Dielectric sealing member and method of use thereof 8 2012
9,203,167 Coaxial cable connector with conductive seal 0 2012
8,323,060 Coaxial cable connector having electrical continuity member 30 2012
8,647,136 Coaxial cable connector having electrical continuity member 9 2012
8,597,041 Coaxial cable connector having electrical continuity member 8 2012
8,562,366 Coaxial cable connector having electrical continuity member 9 2012
8,506,326 Coaxial cable continuity connector 1 2012
9,147,955 Continuity providing port 0 2012
8,920,192 Connector having a coupler-body continuity member 8 2012
8,529,279 Connector having a nut-body continuity element and method of use thereof 24 2012
8,485,845 Continuity maintaining biasing member 12 2012
8,480,430 Continuity maintaining biasing member 16 2012
8,480,431 Continuity maintaining biasing member 13 2012
8,475,205 Continuity maintaining biasing member 12 2012
8,469,740 Continuity maintaining biasing member 12 2012
9,017,101 Continuity maintaining biasing member 4 2013
9,153,917 Coaxial cable connector 0 2013
8,550,835 Connector having a nut-body continuity element and method of use thereof 13 2013
8,753,147 Connector having a coupling member for locking onto a port and maintaining electrical continuity 2 2013
8,801,448 Coaxial cable connector having electrical continuity structure 2 2013
8,920,182 Connector having a coupler-body continuity member 0 2013
8,915,754 Connector having a coupler-body continuity member 0 2013
8,858,251 Connector having a coupler-body continuity member 8 2013
9,130,281 Post assembly for coaxial cable connectors 0 2014
 
Specialty Cable Corp. (1)
* 5,206,485 Low electromagnetic and electrostatic field radiating heater cable 14 1990
 
SONY/TEKTRONIX CORPORATION (1)
* 5,596,309 Reduced inductance coaxial resistor 2 1994
 
KONGSBERG AUTOMOTIVE AB (1)
* 2003/0000,942 Device for heating a component in a vehicle 0 2002
 
HISCOCK & BARCLAY, LLP (1)
8,758,050 Connector having a coupling member for locking onto a port and maintaining electrical continuity 3 2011
 
Lindsay Audiophile Inc. (1)
* 5,574,249 High resistivity inner shields for cabinets housing electronic circuitry 29 1994
 
BELDEN INC. (1)
8,469,739 Cable connector with biasing element 11 2012
 
LEDA LOGARITHMIC ELECTRICAL DEVICES FOR AUTOMATION S.R.L. (2)
* 4,876,419 Two-dimensional electric conductor designed to function as an electric switch 28 1988
* 4,876,420 Continuous flexible electric conductor capable of functioning as an electric switch 17 1988
 
BRP US INC. (1)
* 6,481,426 Low signature EMI/RFI engine 0 2000
 
CORNING OPTICAL COMMUNICATIONS RF LLC (13)
8,272,893 Integrally conductive and shielded coaxial cable connector 15 2010
9,166,348 Coaxial connector with inhibited ingress and improved grounding 0 2011
8,172,612 Electrical connector with grounding member 73 2011
8,888,526 Coaxial cable connector with radio frequency interference and grounding shield 8 2011
8,287,310 Coaxial connector with dual-grip nut 1 2011
9,071,019 Push-on cable connector with a coupler and retention and release mechanism 0 2011
8,690,603 Electrical connector with grounding member 11 2012
9,190,744 Coaxial cable connector with radio frequency interference and grounding shield 0 2012
9,136,654 Quick mount connector for a coaxial cable 0 2013
9,147,963 Hardline coaxial connector with a locking ferrule 0 2013
9,153,911 Coaxial cable continuity connector 0 2013
9,172,154 Coaxial cable connector with integral RFI protection 0 2013
9,048,599 Coaxial cable connector having a gripping member with a notch and disposed inside a shell 0 2013
* Cited By Examiner