Abstract: A protective device for transmitting electromagnetic signals of a desired frequency band from a source to a load comprises an outer conductor, an inner conductor extending coaxially within the outer conductor and a quarter wavelength shunt conductor. A radio frequency impedance control (RFIC) tube is used to maintain the proper transmission line impedance for the device. The shunt conductor is connected, at one end, to the inner conductor and extends along a multi-curved path through an opening in the RFIC tube and wraps around the RFIC tube in at least one plane. The other end of the stub is connected to the outer conductor either directly or indirectly by means of distributed capacitance through a dielectric insulator. A plurality of gas discharge tubes are coupled to the shunt conductor to shunt undesired voltages.

Abstract: An electrical connector includes an inner conductor, an annular insulator which surrounds the inner conductor and an outer conductor which surrounds the annular insulator. The electrical connector is provided with both a threaded coupling mechanism and a snap-fastening coupling mechanism. In one embodiment, the threaded coupling mechanism is in the form of an outwardly projecting spiral threading which protrudes out from the mating end of the outer conductor. In the same embodiment, the snap-fastening coupling mechanism is in the form of an annular groove which is formed in the central body of the outer conductor, the annular groove being sized and shaped to receive a resilient, C-shaped snap ring from a mating electrical connector. In this manner, it is to be understood that the electrical connector is capable of being mechanically and electrically coupled to various types of mating electrical connectors using either threaded coupling means or snap-fastening coupling means.

Abstract: A low-cost electrical connector includes an inner conductor, an annular insulator which surrounds the inner conductor and an outer conductor which surrounds the annular insulator. The electrical connector is provided with both a threaded coupling mechanism and a snap-fastening coupling mechanism. In one embodiment, the threaded coupling mechanism is in the form of an outwardly projecting spiral threading which protrudes out from the mating end of the outer conductor. In the same embodiment, the snap-fastening coupling mechanism is in the form of an annular groove which is formed in the central body of the outer conductor, the annular groove being sized and shaped to receive a resilient, C-shaped snap ring from a mating electrical connector. In this manner, it is to be understood that the electrical connector is capable of being mechanically and electrically coupled to various types of mating electrical connectors using either threaded coupling means or snap-fastening coupling means.