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:
Aug. 02, 1983
Filed:
Oct. 26, 1981
Applicant:
Inventors:
Robert E Maltby, Jr, Wayne, OH (US);
James T Sikorski, Rossford, OH (US);
Assignee:
Libbey-Owens-Ford Company, Toledo, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73840 ; 73838 ; 65 17 ;
Abstract
Apparatus for the destructive testing of glass sheets. The sheets to be tested are subjected to a differential pressure condition by establishing a vacuum on one side thereof and lowering the pressure on such side until the glass deflects to its breaking point. The vacuum system includes a control circuit which enables lowering the pressure in a controlled linear manner with time. The apparatus is designed to permit selection of and testing of sheets substantially immediately after the capping operation.