# US 4,395,081 A · Electrical connector

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- Number: US 4,395,081 A
- Document ID: US4395081A
- Status: Granted
- Kind: A
- Application number: 06/251,426
- Filed: 1981-04-06
- Granted: 1983-07-26
- Earliest claimed: 1981-04-06
- Assignees: Sweda International, Inc.
- Inventors: Aleksandras A. Melys
- Web page: https://patentgrep.com/patent/US4395081A

## CPC

- H01R 4/64: Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
- H01R 13/115: U-shaped sockets having inwardly bent legs, e.g. spade type
- H01R 13/35: for non-simultaneous co-operation with different types of contact member, e.g. socket co-operating with either round or flat pin
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS

## Abstract

An electrical connector is shown including a sheet metal contact having longitudinal edges which are rolled to form two partially opened cylinders that engage tines formed within a conductive ground plane by cutting recesses into the plane to expose the tines. The tines are designed to present sharp edges to the inner surface of the partially open spring cylinders for assuring high electrical conductivity between the contact and the ground plane.

## Claims

### Claim 1

An electrical ground plane connector system, comprising:
an integral sheet metal contact having an open barrel crimp portion which crimps about a conductive wire and a ground plane connector portion; and
a ground plane of a conductive material having a plurality of slots cut into an edge thereof to form at least a pair of tines each tine having a plurality of longitudinally extending sharp conductive edges;
said ground plane connector having rolled longitudinal sides which form partially open spring cylinders for receiving said tines, wherein said sharp conductive edges frictionally engage said spring cylinders;
each of said spring cylinders being adapted to be in contact engagement with at least three of said plurality of conductive edges of its respective tine; whereby the degree of electrical contact between said ground plane and contact is improved.

### Claim 2 (depends on 1)

An electrical ground plane connector system, as claimed in claim 1, wherein:
each outer end of said plurality of tines is formed with a truncated pyramid to guide said spring cylinders into conductive engagement with said tines.

### Claim 3 (depends on 1)

An electrical ground plane connector system, as claimed in claim 1, wherein:
said tines have a square cross section.

### Claim 4 (depends on 1)

An electrical ground plane connector system, as claimed in claim 1, wherein:
said one or more tines have a trapezoidal cross section.

### Claim 5 (depends on 1)

An electrical ground plane connector system, as claimed in claim 1, wherein:
said one or more tines have a triangular cross section.

### Claim 6 (depends on 1)

An electrical ground plane connector system, as claimed in claim 1, wherein:
said one or more tines have a hexagonal cross section.

### Claim 7 (depends on 1)

An electrical ground plane connector system, as claimed in claim 1, wherein:
said one or more tines are formed from a single member configured with a plurality of sharp conductive edges.

### Claim 8

An integral sheet metal contact having a wire crimp portion and a ground plane connector portion wherein said ground plane connector portion comprises:
a flat conductive plate extending along the longitudinal axis of said contact having outer longitudinal edge areas,
each edge area of said plate rolled about an axis parallel to said longitudinal axis of said contact to form two partially open spring cylinders, and
said partially open spring cylinder each having an outermost end opening slightly large in diameter than the diameter of the remainder of said cylinder to receive a pair of tine-like elements extending from a ground plane;
said tines being provided with a plurality of longitudinally extending sharp conductive edges, each of said tines being adapted to receive a respective one of said spring cylinders;
each of said spring cylinders being in contact engagement with at least three of said plurality of conductive edges of its respective tine when said tine is in receiving relationship with its respective spring cylinder, whereby
the degree of electrical contact between said ground plane and contact is augmented.