The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 27, 1981
Filed:
Feb. 21, 1979
Applicant:
Inventors:
Thomas A Eckler, Lake Park, FL (US);
Brian A Manty, Lake Park, FL (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25F / ; C25F / ;
U.S. Cl.
CPC ...
20412965 ; 20412965 ;
Abstract
A method for electrolytically etching metals. Nickel superalloys are etched with uniform grooves using a 10 volume percent HCl aqueous solution and periodically reversed current. An aperture containing shield is interposed between an upward facing workpiece and an electrode. The shield is adapted to divert gases evolved at the workpiece from passage to electrode. Controlled roughness in an etched surface is produced by varying electrolyte temperature. Preferred smooth finish is obtained at 7.degree. C.