electroformed sheath

PATENTS . ':-.~'ot}

Granted in theMetal Finishing FieldPrinted copies of patents are furnished by the Patent and Trademark Office for $3.00 each.Address orders to: Commissioner of Patents and Trademarks, Washington, D.C. 20231.

POWDB COATING GUNU.S. Patent 5,908,162. June 1, 1999R.G. Klein et al., assignors toNordson Corp., Westlake, OhioA spray gun having an anti-back­ionization probe with a controlsystem.

IUCTIIOfOIIIIID .....111U.S. Patent 5,908,285. June 1, 1999J.M. Graff, assignor to UnitedTechnologies Corp., Hartford, Conn.

A method of protecting compositecomponents of a part with an elec­troformed sheath comprising se-

curing an electrically conductivemandrel insert in a mandrel; elec­troplating a head section andpressure and suction sides aroundthe mandrel insert to form withthe mandrel insert a sheath body;removing the mandrel from thesheath body so that a sheath cav­ity is defined within the sheathbody by the position occupied bythe mandrel and a tail section ofthe mandrel insert projects fromthe head section into the sheathcavity to form the electroformed

sheath; and securing compositecomponents of the part within thesheath cavity so that the electro­formed sheath protects the com­posite components.

....... AIITICUSU.S. Patent 5,908,477. June 1, 1999W.L. Harmer et al., assignors to 3MCo., St. Paul, Minn.

An abrasive article comprising abacking having a first major sur­face and a second major surface; aplurality of abrasive particles; at

One size does NOT fit all!DIFFERE T chrome plating applications... DIFFERE T bath chemistrie... DIFFERE T equipment...

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0.05% 0.10% 0.15% 0.20%

Graph of concentration v surface tension for the different LO-MI T formulation.

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74 Mete' Finishing