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:
Apr. 15, 2008
Filed:
Jun. 28, 2004
Applicants:
Alex Teng, Richmond Hill, CA;
Harold Godwin, Orangeville, CA;
Robert Ilmonen, Mississauga, CA;
Inventors:
Assignee:
Husky Injection Molding Systems Ltd., Bolton, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D 17/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A seal for a check valve for a metal molding machine. The seal is provided by the combination of a peripheral groove in an outer surface of the check valve and a helically wound core in the groove. The helically wound coil is expandable into sealing engagement with a cylindrical wall of the molding machine. The helically wound coil may be movable laterally in the groove between a melt channel open position and a melt channel closed position to open or seal the melt channel.