an electric current between the anode and the cathode to cause the electrodepositable composition to deposit on the cathode as a substantially continuous film, and heating the electrodeposited film at an elevated temperature to cure the film, wherein the electrodepositable composition comprises a cationic resin derived from a polyepoxide and which contains in the resin cationic salt groups and active hydrogen groups se- lected from aliphatic hydroxyl, primary amino, and secondary amino; and present as a separate component a fully capped polyisocyanate curing agent containing substantially no free isocyanate groups.

Chromium-Based Coating U.S. Patent 5582,707. Dec. 70, 7996 S. Chizhevski, assignor to Go/an Galvanics Ltd, lsrael

A method for electroplating chmmium- based composite coatings onto a substrate com- prising providing a chromium-containing elec- trolytic bath comprising a liquid component, which provides a source of hexavalent chm mium ions; adding to the liquid component particles of refractory material selected from the group consisting of metal oxides, metal nitrides, and mixtures thereofi adding to the liquid com- ponent ions of cadmium metal, therein to obtain a layer of an electrodeposited material, which provides improved hardness, corrosion and wear resistance, and ductility.

Continuous Electroplating Apparatus U.S. Patent 5582,708. Dec. IO, 1998 E Delfrate and C. Amoux, assignors to Sollac, Putbeaux, France

A process for coating a metal strip by electroplating with a metal alloy, especially a zinc-based alloy, using an installation including several cells arranged in cascade, comprising the step of running strip suc-

cessively through the cells while an elec- trical current is made to flow between the anodes of the cells and the running strip, wherein the running speed is greater than 50 m/min and/or the density of the electri- cal current is greater than 50 A/dm’.

Zinc-Cobalt Plating Bath U.S. Patent 5582,709. Dec. IO, 1996 K. Oshima et at., assignors to Dipsol Chemicals co. Ltd., Tokyo

A zinc-cobalt alloy-plating alkaline bath comprising a zinc compound, a cobalt com- pound, an alkali hydroxide, and a reaction product of an alkyleneamine with an alkylene oxide, and wherein the alkylene oxide is se- lected from the group consisting of ethylene oxide, propylene oxide, and butylene oxide and having a pH of not less than 13.

Isolation Device U.S. Patent 5,582,875. Dec. 10, 7998 S. Ryosuke, assignor to Yugenkaisya Kotogawa Kenzai Kogyosho,, Yamaguchi, Japan

An apparatus and method for insulating a, conductive paint during electrostatic painting.

Blasting Apparatus U.S. Patent 5,584,747. Dec. 17, 1996 S. lkeda et a/., assignors to Sintokogio Ltd., Nagoya, Japan

A shot blasting apparatus for polishing and cleaning wheels.

Flexible Contour Sanding Disk U.S. Patent 5,584,754. Dec. 17, 1996 D. Hash and K Henin, assignors to Sungold Abrasives USA Inc., Port Washington, N.Y.

In a flexible contour sanding head adapted to be driven by a rotary power source including a mandrel supporting a

INTRODUCING THE NEWLY EXPANDED

LINE OF MDH(F) MAGNETIC DRIVE PUMPS

WITH REAL DRY RUN CAPABILITY !

Patented Pinpoint Bearing System

lwaki Walchem has expanded its unique patented pinpoint bear- ing system to encom- pass the entire line of MDH(F) magnetic drive industrial pumps.

Now all MDH(F) pumps, l/2 thru 3 HP can really be operated in repeated dry running conditions and survive

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Circle 118 on reader information card

plurality of juxtaposed disks of flexible abrasive material, each of the disks hav- ing a central hub portion with a mounting area surrounding the mandrel, the im- provement comprising said disks being of circular configuration and having ra- dially arranged skip cuts commencing at a circular locus of points concentric with the hub portion and extending to a pe- ripheral edge of the disk.

Paint Spray Booth U.S. Patent 5,584,759. Dec. f7, 1996 G. Fabrizi, assignor to Nova Verta lntemational S.p.A., Arezzo, ha/y

A spray paint booth comprising a struc- ture for housing vehicles, vehicle compo- nents, and other articles that need to be spray painted; an inside base having a fixed perimetral walkway; a mobile central base for holding the article to be painted; and a lifting mechanism for changing the level of the mobile central base with respect to the fixed perimetral walkway.

Coated Abrasive U.S. Patent5,584,896. Dec. 17, 1996 D. E. Sroberg and D. W. Sange, assignors to 3M Co., St. Paul, Minn.

A coated abrasive article having diluent particles and shaped abrasive particles.

Coated Abrasive Belt U.S. Patent 5,584,897. Dec. 17, 1996 TJ. Christianson and H. W. Benedict, assignors to 3M Co., St. Pau/, Minn.

A method of making a flexible coated abra- sive belt comprising providing a backing sheet having opposite first and second major surfaces, opposite ends, a length, and having generally parallel side edges; joining the opposite ends to form a spliced endless backing sheet; and ap- plying an abrasive coating comprising binder and abrasive particles thereby forming a coated abrasive belt.

Process for Polishing Hard Materials U.S. Pafent5,584,898. Dec. 17, 1996 K. W. Fulton, assignor to Planar Technologies Inc., Stowe, Vt.

A process for polishing a hard ceramic material having a top and bottom surface, comprising providing a polishing chamber defined by a polishing tool base and a pol- ishing tool cover; adhering a lower mi- croporous pad to the polishing tool base; adhering an upper micmporous pad to the pol- ishing tool cover suppotting the hard ceramic material in the polishing chamber such that the bottom surface contacts the lower microporous pad and the top surface contacts the upper mi- croprous pad, supplying a polishing com-

METAL FINISHING . SEPTEMBER 1997