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. 18, 2008
Filed:
Aug. 14, 2001
Erhard Dick, Mitterteich, DE;
Roland Fuchs, Mitterteich, DE;
Erich Fischer, Mitterteich, DE;
Wolfgang Münch, Bubenheim, DE;
Anton Winkelmann, Ober-olm, DE;
Robert Rühl, Mainz, DE;
Erhard Dick, Mitterteich, DE;
Roland Fuchs, Mitterteich, DE;
Erich Fischer, Mitterteich, DE;
Wolfgang Münch, Bubenheim, DE;
Anton Winkelmann, Ober-olm, DE;
Robert Rühl, Mainz, DE;
Carl-Zeiss-Stiftung, Mainz, DE;
Abstract
A device for the production of a glass rod is provided. The device has a Danner blowpipe constructed to avoid problems attributed to different heat expansion coefficients of the participating materials. The Danner blowpipe has an outer metal jacket surrounding a ceramic body and defines a supply end and a discharge end of the blowpipe. A clamping plate is provided at both the supply and discharge ends. The clamping plate on the discharge end is rigidly joined with a shaft and engages the outer metal jacket at the discharge end. The clamping plate on the supply end is joined in an axially displaceable manner on the shaft, which is rigidly joined with a pressure plate against displacement in an axial direction. A pressure spring is disposed between the pressure plate and the clamping plate on the supply end to urge the plates away from one another.