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, 2010
Filed:
Jul. 21, 2005
Applicants:
Michael Spaeth, Frankenthal, DE;
Klaus Krippeit, Alzey, DE;
Hendrik Alfter, Mainz, DE;
Juergen Thuerk, Muellheim, DE;
Inventors:
Michael Spaeth, Frankenthal, DE;
Klaus Krippeit, Alzey, DE;
Hendrik Alfter, Mainz, DE;
Juergen Thuerk, Muellheim, DE;
Assignee:
Schott AG, Mainz, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03B 27/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A device and a method for thermal pre-stressing lengthy hollow objects, in particular glass tubes, are disclosed. The device comprises a heating device, a fixture for receiving an object, and a coolant feed device comprising an outer coolant feed unit with a plurality of nozzles for feeding coolant against an outer surface of the object, and further comprising an inner coolant feed device for feeding coolant against an inner surface of the object.