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:
May. 19, 1992
Filed:
Feb. 09, 1990
Applicant:
Inventors:
Evan M Berns, Cheshire, CT (US);
Angelika H Clark, Mt. Vernon, IN (US);
Assignee:
General Electric Company, Pittsfield, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
428 357 ; 428195 ; 428200 ; 428412 ; 4284735 ; 156287 ; 156311 ; 156313 ; 156322 ; 264166 ; 264173 ; 264251 ; 264545 ;
Abstract
A method for twin sheet forming layers high heat distortion temperature thermoplastic materials. The process employs a low heat distortion temperature thermoplastic material layer disposed between the layers of high heat distortion temperature material layer to permit adhesion therebetween at moderate temperatures to reduce thermal degradation. The structures made therefrom are useful as aircraft ducting.