Adapter for coaxial cable connector

Claim 1

In a coupling apparatus for coaxial transmission lines of the type having a center conductor, an inner insulation, an outer conductor and an outer insulation in that order, wherein said apparatus comprises a hollow shaft member having an internal bore of a diameter just sufficient to hold snugly therein the center conductor and the inner insulation of a first type of coaxial line, said shaft member having for a sufficient distance a substantially cylindrical bearing surface against which the outer conductor and the outer insulation of said first type of coaxial line may be clamped, said shaft member having adJacent said bearing surface a tapered section at one end to assist separation between the inner insulator and the outer conductor of the first type of coaxial line and the spreading of the outer conductor of said first type of coaxial line over said bearing surface, the improvement therewith for adapting said apparatus for a second type of coaxial line having a combined center conductor and inner insulator diameter substantially smaller than the combined inner insulator and center conductor diameter of said first type of coaxial line and of said bore, said improvement comprising a hollow cylindrical member having a uniform sleeve portion and a raised tapered end portion, said outer diameter of said sleeve portion being such as to snugly fit within said bore of said first hollow shaft member and the thickness of said sleeve portion being such as to substantially fill the gap between said bore of said first hollow shaft member and the outer surface of said inner insulator of said second type of coaxial line when said second type of coaxial line is inserted in the bore of said shaft member, said raised tapered end portion located at an end of said cylindrical member having an outside diameter that increases from the extreme end to form a taper adapted to assist separation between inner insulation and outer conductor of the second type of coaxial line, said raised tapered end portion having an outside diameter at the junction with the uniform sleeve portion determined so that when said sleeve portion of said cylindrical member is fitted within said bore the raised tapered end portion matches said tapered section of said shaft member for providing a continuous ramp to assist in spreading the outer conductor and outer insulator of said second type of coaxial line from the inner insulator thereof over said tapered portion of said cylindrical member, over said tapered section and over and around said bearing surface.