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. 20, 1991
Filed:
Mar. 24, 1988
Noriaki Nishigaki, Yokosuka, JP;
Hisao Hosoya, Yokohama, JP;
Kazuyuki Tanaka, Hyogo, JP;
Youichi Iwasaki, Yokohama, JP;
Morio Tominaga, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaka, JP;
Abstract
A glass tube bending apparatus according to the present invention includes a drum for bending a heated/softened glass tube into a circular shape, a first driving device, coupled to the drum, for moving the drum straight, and a second driving device, coupled to the drum, for rotating the drum in a direction, and a control for independently controlling the rotating speed and the moving speed of the drum. According to this apparatus, the operation speeds of rotating and moving of the drum can be controlled independently. Therefore, distortion of glass tubes can be decreased, and thermal bending of tubes can be performed with high precision. Further, various sorts of glass tubes can be treated. Still further, since the first driving device and the second driving device are operated in synchronism, the precision of the thermal bending of glass tubes is enhanced.