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:
Oct. 05, 1993
Filed:
Jun. 07, 1991
Robert E Maltby, Jr, Wayne, OH (US);
Glasstech, Inc., Perrysburg, OH (US);
Abstract
An optical roller wave gauge for inspecting glass sheets processed on a horizontal roller hearth to determine roller wave distortion thereon includes a light source mounted to direct two parallel beams of light separated by a predetermined first distance onto the glass sheet, light detection means mounted to receive the two beams reflected from the surface of the glass sheet, first logic for determining the second distance between the beams at the light detection means, memory for storing a preselected number of second distances determined by the first logic, and second logic for retrieving the preselected number of stored second distances and generating a quality value representing the surface distortion on that portion of the glass sheet over which the preselected number of second distances was determined.