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:
Aug. 15, 1995
Filed:
Aug. 26, 1994
Applicant:
Inventors:
Norman B Campbell, Chino, CA (US);
Francisco Garcia, Los Angeles, CA (US);
Stefan Diosan, Norwalk, CA (US);
Assignee:
Wea Manufacturing Inc., Olyphant, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
425556 ; 4254 / ; 4254 / ; 425810 ; 425D / ; 264107 ;
Abstract
An improved method of removing a stuck sprue from the ejector assembly of an injection molding machine and a tool for use in the method in which the tool has a body with a hollow lower portion having a bottom edge with peripherally spaced indentations, In the method, the tool is first heated to above the melting point of the molding material and the lower end is inserted into the stuck sprue. The tool is cooled to below the melting point of the molding material and then rocked back and forth to free the sprue from the ejector mechanism.