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. 25, 1991
Filed:
Mar. 06, 1990
Applicant:
Inventors:
Donald B Butterfield, Longmeadow, MA (US);
Alcide Sgarzi, Brescia, IT;
Assignee:
AIL Corporation, Columbia, SC (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B23H / ; B23H / ; B23H / ; B23H / ;
U.S. Cl.
CPC ...
20412955 ; 2041297 ; 20412975 ; 2042 / ;
Abstract
The inner end of a spray hole in a fuel injection nozzle for an internal injection engine is electrochemically machined by providing a negative electrode inside a chamber in said body, while applying an electrolyte under pressure to the exterior of the nozzle body, so as to cause the electrolyte to flow through the spray hole inwardly of said body. The electrolyte is preferably an aqueous solution of NaCl.