Srinivasan V Sarma

US Patent:

49522906, Aug 28, 1990

Filed:

Mar 16, 1989

Appl. No.:

7/324774

Inventors:

Michael E. Carnarius - Camp Hill PA
Srinivasan V. Sarma - Hummelstown PA

Assignee:

AMP Incorporated - Harrisburg PA

International Classification:

C02F 104

US Classification:

204149

Abstract:

This invention relates primarily to a waste water treatment and recycling system for an electroplating line. Electroplating lines typically produce waste products which may be defined as environmentally hazardous. The present invention provides for a system of complete recycling of such wastes from an electroplating line which includes (I) a plurality of treatment stations, where each station consists of a treatment tank and a rinse tank, and (II) means for sequentially moving metallic parts for treatment therein from a treatment tank and a rinse tank of a first treatment station, to a treatment tank and rinse tank of a second treatment station. Characteristic features of the waste water treatment and recovery system include the steps of (a) collecting and transferring overflow solution from each rinse tank to a vacuum chamber, where the overflow solution contains chemical constituents from its prior treatment tank, (b) vaporizing the overflow solution, (c) condensing the vapors thereof and storing the condensate for return to the several treatment stations, (d) collecting the chemical constituents as a residue of said overflow solution, and (e) retaining the residue until a predetermined concentration of the chemical constituents is achieved, and transferring the residue to its corresponding treatment tank, whereby the electroplating system is fully recyclable without creating waste product.

US Patent:

50324217, Jul 16, 1991

Filed:

Aug 21, 1990

Appl. No.:

7/570481

Inventors:

Srinivasan V. Sarma - Hummelstown PA
Walajabad S. Sampath - Fort Collins CO
Nagarajan Subramanian - Fort Collins CO
Paul J. Wilbur - Fort Collins CO

Assignee:

AMP Incorporated - Harrisburg PA

International Classification:

B05D 306

US Classification:

427 38

Abstract:

This invention includes a method featuring steps having a transport (64, 68) to carry metal articles (10, 14) through a vacuum chamber (62, 66, 90) containing a plasma cleaning station (32) followed by exposure to an evaporant of metal (42) generated by an E-Beam (50) caused to condense on the articles in high vacuum. A channel structure (51) is provided to cause selective condensation upon the surface of said articles. The apparatus includes several stations (101, 102, 103) to provide multiple coatings on one or both sides of an article to be coated.

US Patent:

51568250, Oct 20, 1992

Filed:

Sep 26, 1990

Appl. No.:

7/588255

Inventors:

Srinivasan V. Sarma - Hummelstown PA
Douglas M. Streed - Harrisburg PA

Assignee:

AMP Incorporated - Harrisburg PA

International Classification:

B01D 1504

US Classification:

423 24

Abstract:

Method and apparatus (10) includes the use of multiple containers (B-1-B-3) containing a weak base ion resin (R) through which plating rinse water (W) is pumped with precious metal such as potassium gold cyanide adsorbed by said resin and then with the cyanide sequentially eluted by potassium hydroxide, water, potassium thiocyanate, water, and the resulting effluent evaporated (at 40) and then chilled (at 44) to remove for reuse the gold and inorganic salt and base.