- Email: [email protected]
Process for treating brass
, ‘.W‘?&z*;+>,, .(” ,$k.? ,’ ;,,.r.. , p *a& g#fj@$j;$; -‘:,-‘:i,
Granted in the Metal Finishing
,”
; ‘:
. . :
” ..
Field
Printed 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.
ELECTROSTATIC
SPRAY
GUN
U.S. Patent 5,957,396. Sept. 28, 1999 G.W. Crum et al., assignors to Nordson Corp., Westlake, Ohio
A mounting assembly for a spray gun with anti-back-ionization probe. BLASTING
APPARATUS
U.S. Patent 5,957,761. Sept. 28, 1999 R.E. Miller et al., assignors to Northrop Grumman Corp., Los Angeles
A closed circuit media capture and recovery head for a portable wheat starch media blast system. ANODIZING
PROCESS
U.S. Patent 5,958,206. Sept. 28, 1999 H. Rothbauer and E. Renner, assignors to ITT Manufacturing Enterprises Inc., Wilmington, Del.
A method for producing an oxide coating on a metal surface of a workpiece, which comprises providing a cathode in an anodizing electrolytic bath; providing a workpiece, as an anode, in the anodizing electrolytic bath; providing at least one auxiliary anode in the anodizing electrolytic bath in a vacinity of a portion of the workpiece where the oxide coating is undesirable; attaching the auxiliary anode to a cover that is electrically passive in the electrolytic bath and placing the cover on the workpiece, whereby a portion of the workpiece is closed by the cover, but the auxiliary anode is not in contact with the workpiece; subjecting the workpiece and cathode to a first direct current source; and preventing formation of the oxide coating in a portion of the workpiece by subjecting the 104
auxiliary anode to the first direct current source or to a second direct current source.
of iron ions, and less than 0.1 mg/L chloride ion at a current density of about 30 to 100 A/dm2.
PROCESS SURFACE
ELECTROWINNING
FOR APPLYING COATING
A
U.S. Patent 5,958,207. Sept. 28, 1999 K. Mull, assignor to Heidelberger Druckmaschinen AG, Heidelberg, Germany, and Winterthurer Metallveredelung AG, Winterthur, Switzerland
An improved process for electrochemically depositing a surface coating, wherein a component is subjected to a galvanic bath and the surface coating is deposited on the component with a structured outer surface topography, by forming a plurality of island formations of deposition material on a surface of the component by providing an electrical waveform as a source of electrical energy and causing a growth of the deposition material on the plurality of island formations for forming the structured outer surface topography with a follow-up waveform as the source of electrical energy during a growth working period. ELECTRODEPOSITED
COPPER
FOIL
U.S. Patent 5,958,209. Sept. 28, 1999 H.Sakai et al., assignors to Mitsui Mining & Smelting Co., Ltd., Ageo, Japan
A process of electrodepositing copper foil having a matte side roughness Rz of 2.5 km or less and atomic cells with a (111) orientation as measured by X-ray diffraction from a copper solution containing copper ions, 0.01 to 0.10 g/L of a polyether glycol, 0.5 to 1.0 g/L of tin ions, 0.5 to 5.0 g/L
OF ZINC
U.S. Patent 5,958,210. Sept. 28, 1999 S.C. Siu and J.W. Evans, assignors to The Regents of the University of California, Oakland, Calif
A method for electrowinning metallic zinc from zinc ion to aqueous solution comprising performing electrolysis on a mixture of solid conductive particles and aqueous alkali solution ranging in concentration from 3 N to about 20 N alkali and containing dissolved zinc ion at an initial concentration ranging from 50 to 500 grams of zinc ion per liter of solution, in an electrolytic cell containing first and second vertically arranged, parallel flat plates. PROCESS
FOR
TREATING
BRASS
U.S. Patent 5,958,257. Sept. 28, 1999 M. W. Regelbrugge et al., assignors to Gerber Plumbing Fixtures Corp., Chicago
A process for the treatment of brass components to reduce leaching lead therefrom when the component is exposed to water comprising contacting the brass component with an aqueous caustic solution wherein the caustic solution is selected from the group consisting of sodium hydroxide and potassium hydroxide and has a pH above 10 to remove some of the leachable lead from the brass component; rinsing to remove excess caustic solution; and contacting with a water-soluble carboxylit acid to remove substantially all of the remaining leachable lead. Metal
Finishing
Granted in the Metal Finishing
,”
; ‘:
. . :
” ..
Field
Printed 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.
ELECTROSTATIC
SPRAY
GUN
U.S. Patent 5,957,396. Sept. 28, 1999 G.W. Crum et al., assignors to Nordson Corp., Westlake, Ohio
A mounting assembly for a spray gun with anti-back-ionization probe. BLASTING
APPARATUS
U.S. Patent 5,957,761. Sept. 28, 1999 R.E. Miller et al., assignors to Northrop Grumman Corp., Los Angeles
A closed circuit media capture and recovery head for a portable wheat starch media blast system. ANODIZING
PROCESS
U.S. Patent 5,958,206. Sept. 28, 1999 H. Rothbauer and E. Renner, assignors to ITT Manufacturing Enterprises Inc., Wilmington, Del.
A method for producing an oxide coating on a metal surface of a workpiece, which comprises providing a cathode in an anodizing electrolytic bath; providing a workpiece, as an anode, in the anodizing electrolytic bath; providing at least one auxiliary anode in the anodizing electrolytic bath in a vacinity of a portion of the workpiece where the oxide coating is undesirable; attaching the auxiliary anode to a cover that is electrically passive in the electrolytic bath and placing the cover on the workpiece, whereby a portion of the workpiece is closed by the cover, but the auxiliary anode is not in contact with the workpiece; subjecting the workpiece and cathode to a first direct current source; and preventing formation of the oxide coating in a portion of the workpiece by subjecting the 104
auxiliary anode to the first direct current source or to a second direct current source.
of iron ions, and less than 0.1 mg/L chloride ion at a current density of about 30 to 100 A/dm2.
PROCESS SURFACE
ELECTROWINNING
FOR APPLYING COATING
A
U.S. Patent 5,958,207. Sept. 28, 1999 K. Mull, assignor to Heidelberger Druckmaschinen AG, Heidelberg, Germany, and Winterthurer Metallveredelung AG, Winterthur, Switzerland
An improved process for electrochemically depositing a surface coating, wherein a component is subjected to a galvanic bath and the surface coating is deposited on the component with a structured outer surface topography, by forming a plurality of island formations of deposition material on a surface of the component by providing an electrical waveform as a source of electrical energy and causing a growth of the deposition material on the plurality of island formations for forming the structured outer surface topography with a follow-up waveform as the source of electrical energy during a growth working period. ELECTRODEPOSITED
COPPER
FOIL
U.S. Patent 5,958,209. Sept. 28, 1999 H.Sakai et al., assignors to Mitsui Mining & Smelting Co., Ltd., Ageo, Japan
A process of electrodepositing copper foil having a matte side roughness Rz of 2.5 km or less and atomic cells with a (111) orientation as measured by X-ray diffraction from a copper solution containing copper ions, 0.01 to 0.10 g/L of a polyether glycol, 0.5 to 1.0 g/L of tin ions, 0.5 to 5.0 g/L
OF ZINC
U.S. Patent 5,958,210. Sept. 28, 1999 S.C. Siu and J.W. Evans, assignors to The Regents of the University of California, Oakland, Calif
A method for electrowinning metallic zinc from zinc ion to aqueous solution comprising performing electrolysis on a mixture of solid conductive particles and aqueous alkali solution ranging in concentration from 3 N to about 20 N alkali and containing dissolved zinc ion at an initial concentration ranging from 50 to 500 grams of zinc ion per liter of solution, in an electrolytic cell containing first and second vertically arranged, parallel flat plates. PROCESS
FOR
TREATING
BRASS
U.S. Patent 5,958,257. Sept. 28, 1999 M. W. Regelbrugge et al., assignors to Gerber Plumbing Fixtures Corp., Chicago
A process for the treatment of brass components to reduce leaching lead therefrom when the component is exposed to water comprising contacting the brass component with an aqueous caustic solution wherein the caustic solution is selected from the group consisting of sodium hydroxide and potassium hydroxide and has a pH above 10 to remove some of the leachable lead from the brass component; rinsing to remove excess caustic solution; and contacting with a water-soluble carboxylit acid to remove substantially all of the remaining leachable lead. Metal
Finishing