COAXIAL CONNECTOR

• US 3,778,535 A
• Filed: 05/12/1972
• Issued: 12/11/1973
• Est. Priority Date: 05/12/1972
• Status: Expired due to Term

• Current Assignee: Edgar Wilmot Jr. Forney
• Original Assignee: Edgar Wilmot Jr. Forney
• Inventors: Forney, Edgar Wilmot Jr.
• Primary Examiner(s): Gilheany, Bernard A.
• Assistant Examiner(s): Grimley, A. T.
• Application Number:
  US05/252,791
• Time in Patent Office: 578 Days
• Field of Search: 174/88C,75C,89 339/177R,177E,89C
• US Class Current: 174/88.00C
• CPC Class Codes: H01P 1/045 Coaxial joints
• CPC Class Codes: H01R 9/05 for coaxial cables

Abstract

A coaxial cable connector featuring inner and outer ferrules between which the outer conductor of a semi-rigid cable is squeezed. The assembly of the connector onto the cable is accomplished with ordinary standard hand wrenches operating on an outer coupling containing the outer ferrule nut threadedly engaging a connector body containing the inner ferrule. The structure of the connector preserves the critical diameters of the coaxial cable thereby reducing or eliminating reflective loss of radio frequency energy.

Claims

1. A connector for terminating a semi-rigid coaxial cable of the type having a center conductor surrounded by a dielectric medium and an outer conductor having a given inner diameter, which comprises:

a. a insert assembly comprising 1. a coupling nut having external threads on one end and a longitudinal bore therethrough, 2. an outer ferrule adapted to receive said cable, said ferrule having a sleeve and on one end of said sleeve a radially extending rim, said rim having a inwardly facing recess, said sleeve adapted to be positioned in said bore in said coupling nut, 3. a retaining ring having teeth on the inner edge, said ring positioned in said recess in said rim and adapted to fit onto said cable whereby said teeth grip said cable; and

b. an adapter assembly comprising 1. an inner ferrule adapted to be inserted into said cable, said inner ferrule having an inner diameter substantially equal to the inner diameter of said outer conductor;

2. a connector body having a passageway therethrough with a portion therein adapted to receive said inner ferrule and internal threads at one end adapted to threadedly receive said insert assembly whereby as said coupling nut threadedly engages said connector body, said inner ferrule is driven into said cable positioned within said outer ferrule thereby expanding said outer conductor against said outer ferrule.

2. a connector body having a passageway therethrough with a portion therein adapted to receive said inner ferrule and internal threads at one end adapted to threadedly receive said insert assembly whereby as said coupling nut threadedly engages said connector body, said inner ferrule is driven into said cable positioned within said outer ferrule thereby expanding said outer conductor against said outer ferrule.

3. A connector for terminating a semi-rigid coaxial cable for the propogation of high frequency signals, said coaxial cable having a metallic tubular outer conductor, which comprises:

a. an outer ferrule adapted to receive an end of said coaxial cable inserted therein;

b. an inner ferrule adapted to be driven into an end of said coaxial cable whereby said outer conductor is pressed radially against said outer ferrule; and

c. housing means to contain said outer and inner ferrules.

4. The connector of claim 3 wherein the inner diameter of said inner ferrule substantially equals the inner diameter of said metallic tubular outer conductor.

5. The connector of claim 3 wherein said outer ferrule has a deformable inelastic sleeve portion whereby as said inner ferrule presses said outer conductor outwardly and radially, said outer conductor and said sleeve portion surrounding said conductor are deformed outwardly and radially.

6. The outer ferrule of claim 5 wherein a rim is positioned at one end of said sleeve portion and as said inner ferrule presses said outer conductor thereagainst, said outer conductor extrudes longitudinally.

7. The connector of claim 3 wherein said means to contain said outer and inner ferrules includes:

a. a coupling nut adapted to contain said outer ferrule therein; and

b. a connector body adapted to contain said inner ferrule and further adapted to receive said coupling nut.

8. The coupling nut of claim 7 wherein said outer ferrule is rotatably mounted therein.