Electrostatic Spray Gun U.S. Patent 5,765,762. June 16, 1998 H. Lee and S. Takayama, assignors to A66 industry K.K., Tokyo

A spray gun type electrostatic paint coat- ing machine comprising a spray gun body; a paint nozzle located at the fore end of the spray gun body and having a paint spouting orifice to spray a paint toward an article to be coated: a paint valve provided in the spray gun body and having a needle valve body to open and close the paint nozzle for opening and stopping supply of the paint to the paint nozzle: and an external electrode located in a position radially outward of the said spray gun body, wherein the spray gun body is made of an electrically insulating material and the paint nozzle is made of a conductive material to function as an inter- nal grounding electrode at or in the vicinity of the painting spouting orifice.

Coating Powder Feed Device U.S. Patent 5,765,971. June 16, 1998 G. Rutz, assignor fo Gema Volsfatic AG. Switzerland

A coating powder feed device compris- ing a housing sealed against entry of coat- ing powder and a plurality of powder con- veying devices mounted in the housing.

Coated Abrasive U.S. Patent 5,766,277. June 16, 1998 R.J. DeVoe et al, assignors to 3M Co., St. Paul, Minn.

A coated abrasive article comprising a backing having a front surface and a back

surface: a binder on the front surface of the backing; and a plurality of abrasive parti- cles at least partially embedded in the binder.

Polishing Agent U.S. Patent .5,766,279. June 16, 1998 N. Ueda et al., assignors fo Mifsui Mining and Smelting Co. Ltd., Tokyo

A fine particulate polishing agent compris- ing a solid solution of cerium oxide and silicon oxide. wherein the weight ratio of cerium oxide to silicon oxide present in the solid solution ranges from lOO:O. 1 to 100: IO.

Powder Spray Booth U.S. Pafent $766,355. June 16, 1998 L.E.B. Josefsson and 12. O’Ryan. assignors to A56 Flexible Aufomation Inc.. New Berlin. Wis.

In a paint spray booth having a longitu- dinally extending p aint application zone through which allicles to be painted are moved from an entrance end to an exit end thereof, at least one air exhaust element extending longitudinally of the paint appli- cation zone. each of the at least one air exhaust elements including first and second surfaces sloping toward a bottom of the paint application zone and converging to- ward a slotted opening forming an exhaust inlet to an exhaust duct longitudinally ex- tending along the paint application zone, the improvement comprising adjusting means for varying a width of the exhaust inlet along a length of the exhaust duct: wherein a bottom-most surface of the ex- haust duct slopes downwardly from one

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end of the exhaust element to a longitudi- nally opposite end of the exhaust element.

Wheel Painting Mask U.S. Pafent ,5,766,358. June 16, 1998 C.E. Oliver. Faribaulf, Minn.

A painting mask for a vehicle wheel comprising an endless ring having an inte- gral mounting flange and a shield flange.

Device for Surface Coating U.S. Patent $766,359. June 16, 1998 E. Sichmann and R. Gerigk, assignors to Singulus Technologies Gmbti, Alzenau, Germany

An apparatus for coating a substrate while the substrate is being rotated com- prising a feed device connected for de- livering the coating substance to the sub- strate so that a portion of the coating flows away from the substrate as excess coating due to rotation of the substrate; a first collecting reservoir for receiving and storing the excess coating substance: a second collecting reservoir for receiv- ing and storing coating; at least one filter having an lmlet connect to receive coating from the first collecting reservoir; a fluid circuit including a first pump and flow directing elements for selectively trans- porting coating from the filter, via the pump. to a selected one of the first and second collecting reservoir, whereby a low pressure can be set in the fluid circuit between the outflow line and at least a selected one of the second collecting res- ervoir and the pump.

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