Electrical connectors – Including or for use with coaxial cable – Having crimpable metallic cable conductor grip
Patent
1992-12-04
1993-12-28
Pirlot, David L.
Electrical connectors
Including or for use with coaxial cable
Having crimpable metallic cable conductor grip
H01R 1704
Patent
active
052734587
ABSTRACT:
A method for crimping a terminal (30) to an end of an inner conductor (20) of a coaxial cable (10) so that the resulting crimp joint (22) is precisely located a selected distance rearwardly from a mating point of the contact section (32) with a complementary contact section of a mating terminal affixed to an other coaxial cable. The terminal includes an intermediate section (42) of selected length, reduced diameter and location between the body section (34) and the crimp joint (24), such that, in cooperation with a smaller diameter forward portion (218) of the bore of the connector outer shell (210) coextending therealong, a region of deliberate impedance mismatch results compensating for other mismatches of the coaxial connection for minimized overall mismatch. A locating fixture (100) affixed to crimping tool (50) has an aperture (102) includes a stop surface (130) which stops the terminal during insertion through the crimping port (56) of the crimping tool and into the aperture by abutting with a ledge (38) of terminal (30), resulting in a target portion (46) of the crimping barrel (40) being precisely opposed from the tool's reciprocating crimping dies (80,82) to be crimped. Mating connectors (202,302) are affixed to cables (200,300) containing the improved crimped terminals.
REFERENCES:
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patent: 4904206 (1990-02-01), Laudig et al.
patent: 4917630 (1990-04-01), Hubbard
patent: 5062808 (1991-11-01), Hosler, Sr.
AMP Instruction Sheet IS 7516, "AMP Screw-Machine Contacts and Application Tooling", Released Dec. 3, 1990, Sixteen pages; AMP Incorporated, Harrisburg, PA.
AMP Instruction Sheet IS 2348-2, "AMP Coaxicon Contacts", Revised Mar. 29, 1974, two pages; AMP Incorporated, Harrisburg, PA.
AMP Instruction Sheet IS 2987-3, "AMP Coaxial RF Series 50-Ohm and 75-Ohm Commercial SMB Bulkhead Jack Connectors", Released Aug. 20, 1991, three pages; AMP Incorporated, Harrisburg, PA.
Military Specification Sheet MIL-C-22520/2C, "Crimping Tools, Terminal, Hand; Wire Termination for Wire Barrel Sizes 20 through 28", dated Mar. 19, 1976, thirty-four pages; U.S. Department of Defense, Washington, DC.
Daniels Data Sheet, "Miniature Adjustable Crimp Tool AFM8 (M22520/2-01)", date unknown; Daniels Manufacturing Corporation, Orlando, FL.
IEC Standard 169-19, "Radio-Frequency Connectors, Part 19: R.F. Coaxial Connectors with inner diameter of outer conductor 2.08 mm (0.082 in) with snap coupling--Characteristic impedance 50 ohms (Type SSMB)", pages 5 to 18, (1985); International Electrotechnical Commission, Geneva, Switzerland.
Fisher, Jr. Robert L.
Hosler, Sr. Robert C.
Ness Anton P.
Pirlot David L.
The Whitaker Corporation
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