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:
Dec. 05, 2017
Filed:
Aug. 29, 2013
Corning Incorporated, Corning, NY (US);
Antoine Gaston Denis Bisson, Corning, NY (US);
Patrick Joseph Cimo, Corning, NY (US);
Thierry Luc Alain Dannoux, Avon, FR;
Ronan Tanguy, Grez sur Loing, FR;
Corning Incorporated, Corning, NY (US);
Abstract
An apparatus () for making glass tubing () of a desired non-circular cross-sectional profile (cf FIG.) includes a mandrel () adapted for positioning proximate heat-softened tubing. The mandrel () has a nose () and a nozzle section () with a chosen profile that will define a final cross-sectional profile of the tubing. The nozzle section () has a feed chamber () for receiving a gas from a source () and a porous and/or foraminous circumferential surface () through which the gas can be discharged to an exterior of the mandrel. The gas discharges to the exterior of the mandrel, forming a film of pressurized gas in the gap () between the porous circumferential surface () and the heat-softened tubing (). A method of forming tubing having a non-circular cross-sectional profile using the apparatus is also provided. A glass sleeve made from the reshaped or formed tubing is also disclosed: a monolithic sleeve made of parallel, opposite, flat and smooth front and back covers for use in an electronic device (cf FIG.). Some glass-ceramic materials may also be suitable for the tubing, such as transparent beta spodumene.