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. 03, 2009
Filed:
Jul. 05, 2007
Pierre Glaesener, Bissen, LU;
Christophe Halter, Selange, BE;
Joaquim Martins Nogueira, Everett, CA;
Pierre Glaesener, Bissen, LU;
Christophe Halter, Selange, BE;
Joaquim Martins Nogueira, Everett, CA;
Husky Injection Molding Systems Ltd, Bulton ON, CA;
Abstract
A self-positioning clamp piston assembly () provides clamp-up, mold break and position reset function through the provision of distinct clamp-up (), mold break () and reset () chambers. A position reference shoulder () on a piston front ring () fixed into a platen (), permits positioning of a tie bar () to ensure clearance () between teeth () on the tie bar () and teeth () on a related but separate locking assembly (). With the tie bar () coupled to a clamp piston () through a tie bar end plate (), movement of the tie bar under clamp pressure displaces an independently moveable reset piston () from alignment with the tie bar end plate (). Pressurization of the mold break chamber () causes displacement of the reset piston () from the shoulder (), but re-alignment of the reset piston with the tie bar end plate (). Finally, actuation of the reset piston () through pressurization of the reset chamber () restricts movement of the clamp piston () but permits the reset piston () to be moved back against the shoulder () to establish the clearance ().