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:
Mar. 20, 1990
Filed:
Mar. 28, 1989
Nippon Sheet Glass Co., Ltd., Osaka, JP;
Abstract
A local heater is arranged in a heating furnace in which glass plates are continuously conveyed, and a bending line on each glass plate is forcibly heated. The local heater is elongated, and positions of both ends of the local heater are independently and digitally controlled in a widthwise (X-axis) direction of the heating furnace. Control point data along the bending line is obtained by interpolating coordinate values of both ends of the bending line. X-axis velocity control is performed such that the local heater is located on the glass bending line in synchronism with conveyance of the glass plate. A heating locus is linear, and the operation of the local heater is not stepwise. An offset of the actual heating locus from the bending line can be minimized.