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:
Dec. 28, 1999
Filed:
Nov. 12, 1997
Richard Osborne, Des Moines, IA (US);
Siebolt Hettinga, Des Moines, IA (US);
Abstract
A process for determining the precise initial volume of the mold cavity of an injection molding machine in which a first and second section engage into seated alignment thereby forming a mold cavity. Vent valves, controlling communication between the interior and exterior of the mold cavity, are closed thereby sealing the mold cavity. An injection means begins injecting a test substance into the mold cavity. The test substance continues filling the mold cavity until the detection of a predetermined threshold level. A measuring means performs the step of measuring the amount of the test substance in the mold cavity, thereby providing sufficient information for calculating the precise initial volume of the mold cavity of the injection molding machine. The apparatus used to perform the method described herein comprises an injection molding machine with a mold cavity configured with vent valves capable of sealing the interior of the mold cavity from the exterior. A processing unit operatively connects to the injection molding machine, and a computer-readable control program code executing on the processing unit works the methods described herein to which the present invention relates.