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. 10, 1981
Filed:
Jul. 17, 1979
Applicant:
Inventor:
John T Bartholomew, Coshocton, OH (US);
Assignee:
General Electric Company, Worthington, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B65C / ; B30B / ; B30B / ;
U.S. Cl.
CPC ...
156288 ; 156323 ; 156581 ; 1565833 ;
Abstract
A method of making close tolerance laminates comprises the steps of positioning in an open stack a plurality of B-staged epoxy resin saturated fibrous sheets and providing the top and bottom of each stack with a contour pad, the stack-facing side of which is adapted to provide a horizontal pressure gradient ranging from higher at the center to lower at the edges, and consolidating the stack under heat and pressure. In contrast to conventional processes which produce laminates which are eliptical in shape (thicker in the center), the new process produces laminates having little or no center-to-edge variation.