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:
Jun. 16, 1992
Filed:
Nov. 13, 1990
Applicant:
Inventor:
Paul Slysh, San Diego, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23H / ; B23H / ; B23H / ;
U.S. Cl.
CPC ...
2041292 ; 2041295 ; 20412955 ; 2041297 ; 20412925 ;
Abstract
An electrochemical machining process for the production of integrally stiffened shell and plate structures. The process applies to such structures as isogrid, waffle, ring stiffened and stringer stiffened structures. In these structures, secondary rib stiffening patterns are generated and shaped by inducing protrustions at selectively positioned electrolyte feeder orifices in electrode tools. Fillets and blending radii between ribs and skins as well as the thickness and width variations of the skins and ribs are controlled to enhance structural performance through electrode tool shaping, and control of electrolyte flow, applied voltage, electrolyte pressure, and electrode oscillation.