Jack device
First Claim
1. A jack device for cross connecting a first coaxial cable with one of second and third coaxial cables, said first and second coaxial cables each having termination means, said third coaxial cable terminating in a plug, said first, second and third coaxial cables having approximately equivalent first characteristic impedances, said jack device comprising:
- a housing having signal-in means for connecting with said first coaxial cable and first and second signal-out means for connecting with at least one of said termination means of said second coaxial cable and said plug of said third coaxial cable, respectively, said housing including grounding means for connecting to said first, second and third coaxial cables;
means for conducting an electrical signal from said signal-in means to said first and second signal-out means, said conducting means including means for switching said signal from said first signal-out means to said second signal-out means on insertion of said plug, said conducting means further including first means for creating a second characteristic impedance having approximately equal inductive and capactive reactive components when said signal-in means is connected to said first signal-out means and second means for creating a third characteristic impedance having approximately equal inductive and capacitive reactive components when said signal-in means is connected to said second signal-out means, said first creating means including a first inductor, said second creating means including a second inductor; and
means for supporting said conducting means with respect to said housing.
1 Assignment
0 Petitions
Accused Products
Abstract
The disclosure is directed to a coaxial jack having a make before break switch in a first conductive path between signal-in mechanism and first signal-out mechanism. The switch is functioned on insertion of a plug is second signal-out mechanism which forms a second conductive path between said signal-in mechanism and said second signal-out mechanism. The jack not only matches impedances with the coaxial cables, but does so by equalizing inductive and capacitive reactances and by maintaining an impedance match at each structural support between a conductor in the jack and the housing of the jack. The housing of the jack is modular thereby providing superior versatility with respect to various configurations and applications.
171 Citations
22 Claims
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1. A jack device for cross connecting a first coaxial cable with one of second and third coaxial cables, said first and second coaxial cables each having termination means, said third coaxial cable terminating in a plug, said first, second and third coaxial cables having approximately equivalent first characteristic impedances, said jack device comprising:
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a housing having signal-in means for connecting with said first coaxial cable and first and second signal-out means for connecting with at least one of said termination means of said second coaxial cable and said plug of said third coaxial cable, respectively, said housing including grounding means for connecting to said first, second and third coaxial cables; means for conducting an electrical signal from said signal-in means to said first and second signal-out means, said conducting means including means for switching said signal from said first signal-out means to said second signal-out means on insertion of said plug, said conducting means further including first means for creating a second characteristic impedance having approximately equal inductive and capactive reactive components when said signal-in means is connected to said first signal-out means and second means for creating a third characteristic impedance having approximately equal inductive and capacitive reactive components when said signal-in means is connected to said second signal-out means, said first creating means including a first inductor, said second creating means including a second inductor; and means for supporting said conducting means with respect to said housing. - View Dependent Claims (2)
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3. A jack device for cross connecting a first coaxial cable with a second coaxial cable, said first and second coaxial cables each having termination means, said first and second coaxial cables having approximately equivalent first characteristic impedances, said jack device comprising:
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a housing having signal-in means for connecting with said termination means of said first coaxial cable and signal-out means for connecting with said termination means of said second coaxial cable, said housing including a passageway having a wall, said passageway for extending between said signal-in means and said signal-out means, said housing including grounding means for connecting to said first and second coaxial cables; means for conducting an electrical signal from said signal-in means to said signal-out means, said conducting means including an elongated conductor member; and means for supporting said conducting means with respect to said housing, said supporting means including a dielectric support member for supporting said conductor member, said support member having opposite ends and an outer edge for fitting against said wall, said wall and said opposite ends of said support member defining a space, said space including said support member and a plurality of regularly spaced cavities with respect to said conductor member, said support member having a second characteristic impedance, said second characteristic impedance being approximately equal to said first characteristic impedance.
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4. A jack device for cross connecting a first coaxial cable with one of second and third coaxial cables, said first and second coaxial cables having termination means, said third coaxial cable terminating in a plug, said first, second and third coaxial cables having approximately equivalent first characteristic impedances, said jack device comprising:
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a housing having signal-in means for connecting with said first coaxial cable and first and second signal-out means for connecting with at least one of said termination means of said second coaxial cable and said plug of said third coaxial cable, respectively, said housing including grounding means for connecting to said first, second and third coaxial cables, said housing including a plurality of passageways having walls, said passageways for extending between said signal-in means and said first and second signal-out means; means for conducting an electrical signal from said signal-in means to said first and second signal-out means, said conducting means including an elongated conductor member, said conducting means including means for switching said signal from said first signal-out means to said second signal-out means on insertion of said plug, said conducting means further including means for creating a second characteristic impedance having approximately equal inductive and capacitive reactive components when said signal-in means is connected to said first signal-out means and second means for creating a third characteristic impedance having approximately equal inductive and capactive reactive components when said signal-in means is connected to said second signal-out means, said first creating means including a first inductor, said second creating means including a second inductor; and means for supporting said conducting means with respect to said housing, said supporting means including a dielectric support member extending in a transverse space between said elongated conductor member and one of said walls of one of said passageways of said housing, said support member having opposing ends, said transverse space having identical said opposing ends, said transverse space including regularly spaced cavities about said conductor member, said supporting means having a fourth characteristic impedance, said second, third and fourth characteristic impedances being approximately equal to said first characteristic impedance. - View Dependent Claims (5, 6)
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7. A jack device for cross connecting a first coaxial cable with one of second and third coaxial cables, said first and second coaxial cables having first and second termination means, respectively, and said third coaxial cable terminating in a plug, said first, second and third coaxial cables having first, second and third central conductors and first, conductor and said first shield, said second conductor and said second shield, and said third conductor and said third shield having approximately equivalent first characteristic impedances therebetween, said jack device comprising:
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a housing having signal-in means for connecting with said first termination means of said first coaxial cable and first and second signal-out means for connecting with said second termination means of said second coaxial cable and said plug of said third coaxial cable, respectively, said housing also including a plurality of passageways having walls, said passageways for extending between said signal-in means and said first and second signal-out means, said housing being conductive for maintaining a ground continuity with said first, second and third shields; means for conducting an electrical signal along one of first and second conductive paths, said first path extending between said signal-in means and said first signal-out means, said first path for being in electrical communication with said first and second central conductors, said second path extending between said signal-in means and said second signal-out means, said second path for being in electrical communication with said first and third central conductors, said conducting means including switching means for closing electrical continuity of said second central conductor to ground before opening electrical continuity in said first path on insertion of said plug; and means for supporting said conducting means with respect to said housing. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22)
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16. A jack device for cross connecting at least one input cable with at least one output cable, said input and said output cables each having termination means with a central conductor for conducting a signal, said jack device comprising:
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a housing having front and rear modules with mating first ends and opposing second ends, each of said modules including means for receiving at least one of said termination means, said receiving means being attached at said second ends of said modules, said housing further including a pair of shells for fitting about portions of said modules to hold said modules together, said housing also including primary means for holding said shells together; means for conducting said signal from said termination means for said input cable to said termination means for said output cable; and means for supporting said conducting means with respect to said front and rear modules.
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Specification