Abstract: An adjustable coaxial cable connecting means is provided for serially connecting the adjacent ends of two cables. A turnbuckle sleeve having an open interior cylindrical wall surface, with opposite open ends of the interior wall surface having threads of equal but opposite pitch. A central coaxial conductor comprising telescoping male and female connectors slidably connecting at their central inner most ends, the male and female connectors each having means for connection to one of the central conductors of a coupled coaxial cable. These are the components needed in order to alter the electrical length of the coupler by rotational adjustment of the turnbuckle sleeve. The electrical length of the coupler may be altered by rotational adjustment of said turnbuckle sleeve.

Abstract: Apparatus for an adjustable low-loss capacitor, which can withstand the application of high shock forces without a corresponding change in a preselected value of capacitance, is described. This capacitor has two sets of hollow cylindrical electrodes which are coaxially interleaved, with, more particularly, one set attached to a rotor unit and the other to a stator unit, all contained within a housing. The capacitance is varied by longitudinal, i.e., axial, movement of the rotor unit with respect to the stator unit. The rotor unit is threadedly inserted into a bushing. In addition, the rotor unit includes a frictional locking mechanism which comprises a threaded member which is inserted into a hole cut into the rotor unit and oriented substantially parallel to the center axis of the rotor. As this threaded member is turned, one portion of the rotor unit moves, with respect to another portion, in a longitudinal direction substantially parallel to a center axis of the rotor unit.

Abstract: A tunable differential disc capacitor having a pair of outer dielectric discs and an electrically conductive rotor element, plural paired electrically conductive portions disposed on the respective dielectric discs and spring clamp means electrically and mechanically connected to respective pairs of the conductive portions. A preferred embodiment has three such pairs of conductive portions and a corresponding number of spring clamp means, so that the rotor element can be moved to various positions with respect to the conductive portions, varying the capacitance values. Electrical connection can be made to a spring clamp connected to the rotor element and to either or both of the other spring clamps, thereby obtaining one or two trimmable differential capacitors. The device can be used with the capacitors connected in series or in parallel. A sealed housing is also provided.

Abstract: A sealed tunable capacitor in which a capacitor assembly of metallized stator discs having a rotor plate sandwiched therebetween, said rotor plate having a post portion extending upwardly and downwardly for rotative movement thereof within central openings in said discs and said rotor post portion having a recess adapted to receive a tuning tool, is contained within a sealed plastic housing such that said rotor tuning post recess is frictionally fitted within an opening in said housing and is accessible from the exterior of said housing and said housing includes a base member frictionally fitted to retain said capacitor assembly within said housing, the leads of said capacitor assembly sealed within slots in said housing base, by frictional fitting or an adhesive or both and said housing base further sealed by a coating of an epoxy adhesive to prevent the penetration of contaminants into said capacitor assembly.

Abstract: Adjustable capacitors for incorporation with any substrate design, and for other general or specific capacitor uses, comprising a dielectric housing means, having base and sidewall eminating therefrom, a rotatable rotor (within said housing means), constructed from a highly conductive metal, having a cylindrical hub and at least one contoured blade plate emanating from the base of said hub, and a metallic retainer, coaxial with and encompassing said rotor hub, to captivate itself against said sidewall in a convex-concave relation to cover and to seal said capacitor assembly and to abut the inner portions of said blade plates to uniformly distribute plate pressure upon the active surface of said dielectric housing base. Displaced from the rotor blade plate by the dielectric housing base are contoured conductive metallized receptive stator electrode layers deposited upon or within said base for connection with receptive substrate circuitry.

Abstract: A lead attachment for a ceramic chip capacitor characterized by a metallic strip lead having at one end two pre-formed L-shaped tabs, perpendicular relative to said metal lead strip, the distance between the arms of said tabs being less than the width of said chip, and said strip having a longitudinal slot running from said tabs partially down its length; each tab having an arm positioned inwardly relative to the longitudinal axis of said lead strip such that said tabs mechanically grip in a spring-like manner, facilitated by the slot, the end of a metalized, pretinned ceramic chip capacitor positioned between said tabs, and thereafter said lead tabs further secured by heating the assembly, thus forming a uniform electrical connection between said chip capacitor and said tab portion of said lead.

Abstract: A low loss capacitor having hollow cylindrical electrodes which are coaxially interleaved. The capacitance is varied by rotation of the rotor electrodes which are mounted on a screw member for axial displacement with respect to the stator electrodes when the screw member is turned. The scew member has a frictional locking means.