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. 25, 2006
Filed:
Feb. 07, 2003
Applicant:
James Martin, Beaverton, MI (US);
Inventor:
James Martin, Beaverton, MI (US);
Assignee:
Brown Machine, LLC, Beaverton, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 51/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus for thermoforming deep drawn parts such as cups in which a vacuum is momentarily applied to a preheated sheet material when overlying a clamping plate prior to clamping and advance of the plug assists to delay contact with a lip molding feature projecting from each mold cavity. This avoids a molding defect due to premature cooling of a localized region of the sheet material when the sheet material comes into contact with the lip molding features.