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:
Jun. 21, 2011
Filed:
Sep. 02, 2005
Applicants:
Frank Büellesfeld, Frankfurt, DE;
Andreas Langsdorf, Ingelheim, DE;
Ulrich Lange, Mainz, DE;
Volker Plapper, Saulheim, DE;
Inventors:
Frank Büellesfeld, Frankfurt, DE;
Andreas Langsdorf, Ingelheim, DE;
Ulrich Lange, Mainz, DE;
Volker Plapper, Saulheim, DE;
Assignee:
Schott AG, Mainz, DE;
Primary Examiner:
Int. Cl.
CPC ...
C09B 37/025 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a method and an apparatus for producing optical glass elements, in particular optical prisms or optical rod lenses, using a drawing process. The geometry of the glass strand which is to be produced is controlled by means of cooling or heating elements positioned at least around portions of the periphery or longitudinal axis of the glass strand, inside or outside the heating apparatus.