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. 06, 1993
Filed:
Jun. 10, 1991
Applicant:
Inventors:
Vitaly Akselrud, Richmond Hill, CA;
Stefan von Buren, Toronto, CA;
Assignee:
Husky Injection Molding Systems Ltd., Bolton, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ; B29C / ;
U.S. Cl.
CPC ...
425557 ; 425130 ; 425561 ; 425563 ; 425572 ;
Abstract
A hot runner system for injecting precise quantities of at least one resin advancing under pressure from a resin source wherein the system includes a shooting pot having a piston with opposed working surfaces which divide the shooting pot into at least two reservoirs. Resin under pressure is switched cyclically from one reservoir to the other whereby the piston is driven by resin under pressure to purge one reservoir while the other reservoir is loaded.