Circuit board eyelet

Claim 2

An eyelet adapted to be fitted in a circuit board hole and soldered to the circuit board comprising a cylindrical body, a circumferential funnel flange at one end of the body, a flange or means for forming a flange at the other end of the body, and flat pad contact means adjacent the junction between said funnel flange and said body for forming a heat transmitting contact with printed circuitry on the circuit board.

Claim 3

A circuit board solder eyelet as in claim 1 wherein said pad contact means comprises a flat annular portion of said flange joining said body and extending radially outwardly therefrom.

Claim 4

A circuit board solder eyelet as in claim 2 including a notch formed in said funnel flange extending into said portion.

Claim 5

A circuit board solder eyelet as in claim 2 including a cylindrical insulation sheath fitted around said body and wherein said portion extends radially outwardly past said sheath, and said flange or means for forming a flange projects from the other end of said sheath.

Claim 6

A circuit board solder eyelet as in claim 4 including wire grip fingers extending into the interior of said body and openings in said body communicating the interior of the body with the inside surface of said sheath.

Claim 7

A circuit board solder eyelet as in claim 5 including a notch formed in the edge of said funnel flange and extending into said portions a distance insufficient to expose the end of said sheath.

Claim 8

A circuit board solder eyelet as in claim 1 including a cylindrical insulation sheath fitted around said body and extending between said funnel flange and said flange or means for forming a flange, said pad contact means extending radially outwardly of said body past said sheath.

Claim 9

A circuit board solder eyelet as in claim 1 including wire grip means in the interior of said body.

Claim 10

A circuit board solder eyelet as in claim 1 wherein a solder flow notch is formed in said flange, said notch extending into said pad contact means.

Claim 11

A circuit board solder eyelet including a cylindrical body, a generally funnel shaped circumfrential flange at each end of the body, one flange including a flat annular heat transmitting pad surface on the side thereof adjacent an outside end of the body, said surface lying in plane perpendicular to the axis of said body.

Claim 12

A circuit board solder eyelet including a cylindrical body, a generally funnel shaped circumfrential flange at each end of the body, one flange including a flat annular heat transmitting pad surface on the side thereof adjacent an outside end of the body, said surface lying in plane perpendicular to the axis of said body.

Claim 13

A circuit board solder eyelet as in claim 10 wherein a solder flow notch is formed in said flange, said notch extending into said surface.

Claim 14

A circuit board solder eyelet as in claim 10 including wire grip means in the interior of said body.

Claim 15

A circuit board solder eyelet as in claim 10 including a cylindrical insulation sheath fitted around said body and extending between said pad surface and the other flange.

Claim 16

A circuit board solder eyelet as in claim 13 wherein said pad surface extends radially outwardly past said sheath.

Claim 17

A circuit board contact system including a circuit board having sides formed of insulating material and a core of metal, an eyelet hole formed through the thickness of the circuit board, printed circuitry on one side of the circuit board for interconnecting circuit elements on the board, the circuitry including a printed circuit pad surrounding one end of said hole, a circuit board eyelet fitted in the circuit board hole, said eyelet including a cylindrical body portion, a sheath of insulating material fitted around said body portion, a funnel flange at each end of said body engaging the sides of the circuit board so as to confine the eyelet within the hole, the flange adjacent said pad including a flat annular heat transmitting contact surface extending radially outwardly past said sheath and lying flush upon the pad for transmitting heAt from the eyelet to the pad during soldering, and a mass of solder within the interior of the eyelet body and extending therefrom past the contact surface and to the pad for establishing an electrical connection between the eyelet and the pad.

Claim 18

A circuit board contact system including a circuit board having sides formed of insulating material and a core of metal, an eyelet hole formed through the thickness of the circuit board, printed circuitry on one side of the circuit board for interconnecting circuit elements on the board, the circuitry including a printed circuit pad surrounding one end of said hole, a circuit board eyelet fitted in the circuit board hole, said eyelet including a cylindrical body portion, a sheath of insulating material fitted around said body portion, a funnel flange at each end of said body engaging the sides of the circuit board so as to confine the eyelet within the hole, the flange adjacent said pad including a flat annular heat transmitting contact surface extending radially outwardly past said sheath and lying flush upon the pad for transmitting heAt from the eyelet to the pad during soldering, and a mass of solder within the interior of the eyelet body and extending therefrom past the contact surface and to the pad for establishing an electrical connection between the eyelet and the pad.

Claim 19

A circuit board contact system as in claim 15 wherein each flange includes a generally conical portion extending away from the circuit board and the flange adjacent said pad includes a solder flow notch extending from the edge thereof a distance insufficient to expose said sheath.