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:
Jan. 22, 1985
Filed:
Jan. 26, 1983
Applicant:
Inventors:
Assignee:
Pilkington Brothers P.L.C., St. Helens, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ; C03B / ;
U.S. Cl.
CPC ...
65114 ; 65348 ; 65351 ; 16510416 ; 16510418 ;
Abstract
The invention provides apparatus and a method for thermally toughening glass by quenching the glass with a particulate material. A body of mobile aerated particulate material is created and gas extraction means and gas supply means are located in a region of the body through which a flow of the particulate material towards the glass is to be engendered. Regulation of the gas supply and extraction means regulates the mobility of the particulate material and permits the flow to be switched on and off.