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. 09, 1988
Filed:
Jul. 30, 1986
Applicant:
Inventor:
David Shanaberger, Trucksville, PA (US);
Assignee:
Owens-Illinois Television Products Inc., Toledo, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
65 29 ; 65 81 ; 65160 ; 65163 ; 65318 ;
Abstract
A method and apparatus for pressing glass TV tube faceplates employing a microprocessor controlled ram and plunger operated with open loop position based speed control at relatively high rates of motion when the plunger is not in critical contact with the glass, at uniform speed as the plunger enters the glass and at closed loop pressure control after the viewing region of the cavity for the faceplate between plunger and mold has been filled out at uniform plunger pressing speed. Pressure control is employed to ramp pressure down to a pressing dwell pressure and maintain that pressure.