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:
Oct. 27, 1987
Filed:
May. 01, 1986
Applicant:
Inventors:
Victor F Dzewaltowski, Springfield, VT (US);
James Halvorsen, Springfield, VT (US);
John M Check, Chelsea, MI (US);
Assignee:
Ex-Cell-O Corporation, Walled Lake, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23H / ; B23H / ;
U.S. Cl.
CPC ...
219 / ; 219 / ; 219 / ; 2395333 ;
Abstract
A combined grinding and EDM apparatus has an indexable rotary turret with work heads secured thereon to locate a pair of nozzle body blanks with their longitudinal axes in spaced parallelism; and compound cross and longitudinal slide assemblies carrying either grinding tools or non-contact machining tools which work on the blanks to form a valve guide bore and a valve seat shaped as a frustrum of a cone whose axis is concentric with the bore; the valve seat cone surface having a small end diameter to large end diameter ratio in the order of 1-50.