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. 26, 2019
Filed:
Feb. 01, 2016
Applicants:
A. Finkl & Sons Co., Chicago, IL (US);
Sorel Forge Co., St. Joseph De Sorel, CA;
Inventor:
Louis Philippe Lapierre-Boire, Chambly, CA;
Assignees:
A. FINKL & SONS CO., Chicago, IL (US);
SOREL FORGE CO., Quebec, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 33/38 (2006.01); B29C 45/26 (2006.01); B29C 33/42 (2006.01); B29C 33/76 (2006.01); B29L 31/00 (2006.01);
U.S. Cl.
CPC ...
B29C 45/26 (2013.01); B29C 33/42 (2013.01); B29C 33/76 (2013.01); B29K 2905/12 (2013.01); B29L 2031/757 (2013.01);
Abstract
A blemish free surface is formed on the cavity side of a set of mold or die blocks, said set consisting of a core side and a cavity side, by use of a softer alloy on the core side as contrasted to the cavity side so that, during plastic injection molding, the core side will wear at the parting line in preference to the cavity side whereby erosion of the set occurs on the core side in preference to the cavity side leaving the cavity side erosion free.