Anode assembly for selectively plating interior surfaces of elec

Details Anode assembly for selectively plating interior surfaces of elec Anode assembly for selectively plating interior surfaces of elec

1988-11-23

1990-02-27

Valentine, Donald R.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204280, 204225, C25D 1712

Patent

active

049043641

ABSTRACT:
An anode assembly 30 for selectively plating contact areas 102 on the interior surface of cathodically charged socket terminals 96 is disclosed, which comprises a conductive body member 32 having an anode means or member 54 extending forwardly from a body section 38, a dielectric body member 58 adapted to be secured to a forward portion 34 of said conductive body member 32 and having a passageway 62 therethrough for receiving the anode means 54; sheath means 64 extending forwardly from the dielectric body member and along the anode means 54 and extending angularly around at least one selected circumferential portion thereof, and lateral edge surfaces 68 of the sheath means 64 defining at least one slot 70 extending axially along the anode means 54 such that at least one axially extending portion 55 of the anode means 54 is exposed along the slot 70, the sheath means 64 having a diameter smaller than the inner diameter of a terminal 96 to be plated; and means for securing said dielectric body member 58 to said forward portion 34 of said conductive body member 32. Upon moving the sheathed anode means 54 into the interior of an electrical terminal 96, supplying plating solution upon the exposed anode portion 55 of the anode means 54, and providing an electrical current flow from the anode means 54, through the plating solution and into the cathodically charged terminal 96, a layer of plating is selectively deposited on the internal surface portion 102 of the terminal 96 that is generally aligned with the at least one exposed anode portion 55, the sheath means 64 providing a barrier to prevent plating on the remaining internal terminal surface portions.

REFERENCES:
patent: 2929769 (1960-03-01), Newell et al.
patent: 3650912 (1972-03-01), Plehal
patent: 4370211 (1983-01-01), Hybler
patent: 4384926 (1983-05-01), Wagner
patent: 4427498 (1984-01-01), Wagner
patent: 4555321 (1985-11-01), Wicks
patent: 4690747 (1987-09-01), Smith et al.

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