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:
Nov. 06, 2007
Filed:
Jun. 24, 2004
Applicant:
Robert Ilmonen, Mississauga, CA;
Inventor:
Robert Ilmonen, Mississauga, CA;
Assignee:
Husky Injection Molding Systems Ltd., Bolton, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 45/00 (2006.01); F16K 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A check valve for a molding machine. The check valve has a stem portion and a ring portion movable along said stem portion between a melt channel open position and a melt channel closed position. A groove is formed in a forward face of the ring portion. The groove, in operation, receives melt to force an outer circumferential portion of the ring in a radial direction to provide a seal between the ring portion and a wall in the machine.