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. 14, 1989
Filed:
Aug. 30, 1984
Applicant:
Inventors:
John D Anthony, Jr, Wilmington, DE (US);
Kenneth W Leffew, Kennett Square, PA (US);
Assignee:
E. I. DuPont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05C / ;
U.S. Cl.
CPC ...
427-9 ; 118665 ; 118696 ; 118410 ; 264 401 ; 425141 ; 425466 ;
Abstract
A thickness control system for controlling the thickness of an extrudate includes a host computer for controlling the temperature of a heat responsive element based upon a predetermined temperature set point. A back-up duty cycle controller is provided for control in the event of host failure.