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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Patent Owner(s)

Patent OwnerAddressTotal Patents
COOPER AUTOMOTIVE PRODUCTS, INC.HOUSTON, TX77

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Frawley, Lanny J St. Charles, IL 6 65

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Patent Info (Count) # Cites Year
 
PPC BROADBAND, INC. (43)
7,828,595 Connector having conductive member and method of use thereof 50 2009
7,845,976 Connector having conductive member and method of use thereof 48 2009
7,833,053 Connector having conductive member and method of use thereof 51 2009
8,029,315 Coaxial cable connector with improved physical and RF sealing 37 2009
8,287,320 Coaxial cable connector having electrical continuity member 9 2009
7,892,005 Click-tight coaxial cable continuity connector 50 2010
8,152,551 Port seizing cable connector nut and assembly 22 2010
8,079,860 Cable connector having threaded locking collet and nut 29 2010
8,113,879 One-piece compression connector body for coaxial cable connector 5 2010
8,313,345 Coaxial cable continuity connector 9 2010
8,167,636 Connector having a continuity member 23 2010
8,323,053 Connector having a constant contact nut 0 2010
8,167,635 Dielectric sealing member and method of use thereof 21 2010
8,167,646 Connector having electrical continuity about an inner dielectric and method of use thereof 21 2010
8,075,338 Connector having a constant contact post 30 2010
7,950,958 Connector having conductive member and method of use thereof 45 2010
8,414,322 Push-on CATV port terminator 0 2010
8,337,229 Connector having a nut-body continuity element and method of use thereof 3 2011
8,398,421 Connector having a dielectric seal and method of use thereof 0 2011
8,192,237 Coaxial cable connector having electrical continuity member 45 2011
8,444,445 Coaxial cable connector having electrical continuity member 0 2011
8,342,879 Coaxial cable connector 2 2011
8,366,481 Continuity maintaining biasing member 2 2011
8,388,377 Slide actuated coaxial cable connector 0 2011
8,348,697 Coaxial cable connector having slotted post member 2 2011
8,157,589 Connector having a conductively coated member and method of use thereof 8 2011
8,591,244 Cable connector 0 2011
8,465,322 Coaxial cable connector 0 2011
8,313,353 Coaxial cable connector having electrical continuity member 8 2012
8,573,996 Coaxial cable connector having electrical continuity member 0 2012
8,382,517 Dielectric sealing member and method of use thereof 0 2012
8,323,060 Coaxial cable connector having electrical continuity member 8 2012
8,647,136 Coaxial cable connector having electrical continuity member 0 2012
8,597,041 Coaxial cable connector having electrical continuity member 0 2012
8,562,366 Coaxial cable connector having electrical continuity member 0 2012
8,506,326 Coaxial cable continuity connector 0 2012
8,529,279 Connector having a nut-body continuity element and method of use thereof 0 2012
8,485,845 Continuity maintaining biasing member 0 2012
8,480,430 Continuity maintaining biasing member 0 2012
8,480,431 Continuity maintaining biasing member 0 2012
8,475,205 Continuity maintaining biasing member 0 2012
8,469,740 Continuity maintaining biasing member 0 2012
8,550,835 Connector having a nut-body continuity element and method of use thereof 0 2013
 
CORNING GILBERT INC. (4)
8,272,893 Integrally conductive and shielded coaxial cable connector 1 2010
8,172,612 Electrical connector with grounding member 47 2011
8,287,310 Coaxial connector with dual-grip nut 0 2011
8,690,603 Electrical connector with grounding member 0 2012
 
BELDEN INC. (2)
8,506,325 Cable connector having a biasing element 0 2011
8,469,739 Cable connector with biasing element 0 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
 
GENERAL ELECTRIC COMPANY (1)
5,166,477 Cable and termination for high voltage and high frequency applications 77 1991
 
Lindsay Audiophile Inc. (1)
5,574,249 High resistivity inner shields for cabinets housing electronic circuitry 17 1994
 
SONY/TEKTRONIX CORPORATION (1)
5,596,309 Reduced inductance coaxial resistor 2 1994
 
Specialty Cable Corp. (1)
5,206,485 Low electromagnetic and electrostatic field radiating heater cable 14 1990
 
Other [Check patent profile for assignment information] (1)
5,274,712 High resistivity inner shields for audio cables and circuits 14 1992