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:
Feb. 27, 2007
Filed:
Apr. 30, 2004
Applicants:
Gregory A. Holmann, Canton, MI (US);
James Hendry, Brooksville, FL (US);
Inventors:
Gregory A. Holmann, Canton, MI (US);
James Hendry, Brooksville, FL (US);
Assignee:
Lear Corporation, Southfield, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B29D 22/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and system for forming an injection molded plastic part. After the injection of plastic material has started, a volume of gas from a fixed volume reservoir is introduced into the plastic material at a low pressure forming a hollow cavity. The introduction of this volume of gas is initiated when the temperature of the plastic material in the mold has reached a predetermined value. After the mold is filled and packed with plastic, pressurized gas is introduced into the hollow cavity forming the completed plastic part.