# US 4,943,245 A · Coaxial electrical connector

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- Number: US 4,943,245 A
- Document ID: US4943245A
- Status: Granted
- Kind: A
- Application number: 07/386,694
- Filed: 1989-07-31
- Granted: 1990-07-24
- Earliest claimed: 1989-07-31
- Assignees: Microdot Inc.
- Inventors: Thomas C. Lincoln
- Web page: https://patentgrep.com/patent/US4943245A

## CPC

- H01R 24/44: comprising impedance matching means
- H01R 2103/00: Two poles
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS

## Abstract

A matched impedance coaxial connector for use in the transmission of high frequency signals utilizing a twist pin connector combined with a sliding interface which does not require full mating for successful performance.

## Claims

### Claim 1

A matched impedance pin connector comprising
a tubular female contact having an open end,
a male contact acceptable in the open end of said female contact,
a male contact sleeve surrounding one end of said male contact in radially spaced relation to and electrically connected thereto,
a male contact housing disposed about said male contact sleeve in radially spaced co-axial relation thereto,
a first annular insulator disposed interiorly of said male contact housing in axially aligned relation to said male contact sleeve, said first annular insulator and male contact sleeve having substantially equal inside diameters for the telescopic acceptance of said female contact,
a female contact housing disposed about said female contact in radially spaced coaxial relation thereto and having an inside diameter substantially equal to the outside diameter of said male contact sleeve for the acceptance thereof in telescopic relationship, and
a second annular insulator interposed between said female contact and said female contact housing to maintain a constant radial spacing therebetween.

### Claim 2 (depends on 1)

The connector of claim 1 further comprising
a spring sleeve disposed about said second annular insulator and having a plurality of spring fingers extending axially therefrom, said fingers frictional engaging with said male contact housing.