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:
Mar. 15, 1994
Filed:
Apr. 27, 1992
Applicant:
Inventors:
Craig A Nelson, Windom, MN (US);
Russell J VanRens, Milwaukee, WI (US);
Assignee:
Outboard Marine Corporation, Waukegan, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B / ; B22D / ;
U.S. Cl.
CPC ...
33 / ; 33121 ;
Abstract
A method for determining the size of the open area of a vacuum valve for use in a die casting operation is disclosed. The invention determines the size primarily as a function of the total length of the exterior parting lines of the die. Apparatus for producing die castings is disclosed which has a vacuum valve with a specified open flow area.